White92Cutlass Posted November 5, 2019 Report Posted November 5, 2019 Need some help from the Gurus here. 1992 Cutlass Supreme 3.1, automatic stumbles on acceleration for a second and dies at times when accelerating from a stop (within a few feet). Shop threw parts at it, issue not fixed. Shop put new fuel pump, new fuel filter, 2 new coils, new coil pigtail, 3 new spark plugs, new throttle position sensor, new PCV and hose, and new crankshaft position sensor. Second shop said that bad fuel injectors was the problem and they guaranteed that that would fix it (for $1,600). I took it from the shop and replaced all 6 fuel injectors myself along with the upper intake gaskets for $80. However, issue is still there. Only code it is pulling is 45- left bank oxygen sensor. I unpugged the upstream oxygen sensor harness- it still dies. Also has irratic idle at times (up or down 500 rpms). Any help would be greatly appreciated- thanks! Quote
Psych0matt Posted November 5, 2019 Report Posted November 5, 2019 Have you checked for vacuum leaks? You said you did the uim gaskets, wondering if the lim gasket is leaking. Quote
Schurkey Posted November 5, 2019 Report Posted November 5, 2019 (edited) What is the fuel pressure just before the engine stalls? What is the cranking compression pressure of all six? Connect a scan tool, look at the data stream. Short- and long-term fuel trims, engine coolant temperature, O2 sensor readings and cross-counts, EGR operation, MAP sensor values, and all the other sensors/actuators. Have you followed the diagnostic procedure for the Code 45, or are we just ignoring it? Edited November 5, 2019 by Schurkey Quote
55trucker Posted November 6, 2019 Report Posted November 6, 2019 (edited) This is very odd........an OBDI vehicle does not make use of a *left bank* oxygen sensor..... there is only one in the system & that is just before the cat. You're also misreading the code 45....that does not suggest that the o2 sensor is at fault....that code is telling one that there is a rich situation where the fuel mixture is concerned. Removing the harness from the o2 will not correct that issue. Did either of those *shops* test the FPR for proper function? Edited November 6, 2019 by 55trucker Quote
Psych0matt Posted November 6, 2019 Report Posted November 6, 2019 This is very odd........an OBDI vehicle does not make use of a *left bank* oxygen sensor..... there is only one in the system & that is just before the cat. You're also misreading the code 45....that does not suggest that the o2 sensor is at fault....that code is telling one that there is a rich situation where the fuel mixture is concerned. Removing the harness from the o2 will not correct that issue. Did either of those *shops* test the FPR for proper function?You know what, for some reason I was thinking he said the fuel pressure regulator was replaced but we reading it doesn’t seem like that was the case. This almost sounds exactly like what my monte Carlo was doing when the fuel pressure regulator went bad. Quote
White92Cutlass Posted November 8, 2019 Author Report Posted November 8, 2019 I will test the FPR, thanks Quote
White92Cutlass Posted November 16, 2019 Author Report Posted November 16, 2019 Tested the fuel pressure regulator. No sign of fuel when removing the vacuum hose. 39 with key on and not started, 36 with engine idling. 44 when vacuum hose is pulled off when it is running. Are these numbers within required specifications? Thanks! Quote
55trucker Posted November 16, 2019 Report Posted November 16, 2019 Those all sound good, no rich condition there, with the engine running one pulls off the vacuum line to the FPR & the pressure should rise, the vacuum to the diaphragm keeps the pressure regulated to what is needed in a high vacuum scenario (idle/no throttle). Soooo........the next time this situation occurs (if at home) immediately pull all the plugs, look for signs of flooding in any of them, if all look dry & somewhat normal (tan colour, fluffy brown deposits) that would suggest they are all firing normally & the engine is not running rich. Quote
White92Cutlass Posted November 16, 2019 Author Report Posted November 16, 2019 White smoke coming from exhaust- so much that I thought it had blown a head gasket. Car does not get hot. Exhaust smells strongly of gas and lots of condensation dripping out of exhaust pipes. Quote
Schurkey Posted November 16, 2019 Report Posted November 16, 2019 1 hour ago, 55trucker said: pull all the plugs, look for signs of flooding in any of them, if all look dry & somewhat normal (tan colour, fluffy brown deposits) that would suggest they are all firing normally & the engine is not running rich. "Normal" hasn't looked like that around here for decades. Around here, unleaded gasoline burns so clean it takes thousands and thousands of miles to put color on the plugs. I'd expect them to look virgin-white (at least the three new ones.) What kind of shop puts three spark plugs into a six-cylinder car? Were they the rear-bank plugs and someone already replaced the fronts? PUT A SCAN TOOL ON THIS CAR. Look at the data stream. And does Code 45 come back when it's cleared? Did you ever bother to follow the diagnostic procedure for Code 45? Quote
White92Cutlass Posted November 19, 2019 Author Report Posted November 19, 2019 On 11/16/2019 at 5:49 PM, Schurkey said: "Normal" hasn't looked like that around here for decades. Around here, unleaded gasoline burns so clean it takes thousands and thousands of miles to put color on the plugs. I'd expect them to look virgin-white (at least the three new ones.) What kind of shop puts three spark plugs into a six-cylinder car? Were they the rear-bank plugs and someone already replaced the fronts? PUT A SCAN TOOL ON THIS CAR. Look at the data stream. And does Code 45 come back when it's cleared? Did you ever bother to follow the diagnostic procedure for Code 45? I am not a mechanic. I sold the car to my step-son and it quit on him in Oklahoma. A friend and I trailered it back to Missouri because the shop guaranteed that fuel injectors would fix the issue but they wanted a fortune to do it. The car was on a scan tool at both shops in Oklahoma. Only code it ever pulled was oxygen sensor. The only scan tool I own doubles as a paper clip. Again, I am not a mechanic, so I haven't got a clue what the "diagnostic procedure is for code 45". Taking the car to a local shop so they can follow the diagnostic procedure for code 45. Thanks everyone for the replies. Quote
White92Cutlass Posted November 24, 2019 Author Report Posted November 24, 2019 I reset the codes and took it for a test drive. After an hour of driving, the check engine light came on. I pulled out the trusty paperclip and read the codes. It is now pulling codes 33, 35, and 45. Any idea what the problem may be going by these codes? Just trying to save my step-son some money by avoiding shop charges. Quote
55trucker Posted November 24, 2019 Report Posted November 24, 2019 (edited) Code 33 is Map sensor circuit signal voltage is high.. vacuum is low, throttle plate is closed, situation lasts for more than 5 seconds...engine misfire or low idle rpm can set code 33 Code 35 is IAC circuit will set when the idle rpm is above or below the specified by 200 rpm for more than 50 secs Code 45 is O2 sensor (rich condition) that rich condition is the major cause of the 33 & the 35, find the source of the rich condition (as previously suggested) & the 33 & 35 will self correct. Edited November 24, 2019 by 55trucker Quote
Schurkey Posted November 25, 2019 Report Posted November 25, 2019 An elderly O2 sensor can set a false "rich" code. I fought with that for two years, on and off, on my '88 K1500. Found nothing wrong...until, in desperation, I ripped out the O2 sensor and stuffed a new one in place. Instantly fixed the "Code 45 only at highway speed" problem I'd been having.. Quote
pitzel Posted November 25, 2019 Report Posted November 25, 2019 O2 sensors go bad *long* before codes are set. They're only like $10-$15 now on RA, they pretty much should be changed every 60k mi I find. Quote
White92Cutlass Posted January 5, 2020 Author Report Posted January 5, 2020 Shop diagnosed the problem as a bad computer. I have two Cutlass computers from previous parts cars. One is from a 1991 Cutlass Supreme Convertible (3.1, auto) and one is from a 1993 Cutlass Supreme Convertible (3.1, auto). Is the 1991 computer the only one that would work in the '92 Cutlass (which is also a 3.1, auto)? Heard that '93's have a different trans than 92's and ecms can't be interchanged. Also, I need to switch some chip (PROM?) that is in the computers? What is the procedure for doing that? Thanks! Quote
55trucker Posted January 5, 2020 Report Posted January 5, 2020 use this list to find your ECM/chip locate your engine/platform in the left side menu, locate your year, then the corresponding ECM number...use the the ECM number listed in the lower main menu to find the memcal/PROM that was used with that particular ECM/ vehicle application This page lists the several generations of GM engine, powertrain, and vehicle control modules which are characterized by having a single EPROM or EEPROM containing both the vehicle calibration and program code. This page does not cover the older C3 generation of ECMs. It also does not cover any flash based control modules. Items in italics are unverified. An incomplete list of ECMs/PCMs/VCMs: 1227165 1227303 1227727 1227730 1227748 1227749 1227752 1228321 1228331 1228253 1228706 1228707 1228708 16132792 16134847 16141470 16149396 16153597 16156647 16159278 16159282 16163993 16168625 16183247 16186695 16191947 16196344 16196393 16196395 16196401 16196404 16197128 16197427 16198259 16198260 16198262 16198263 16198264 16198266 16198267 16199982 An incomplete list of Australian ECMs/PCMs/VCMs: 1227277 1227808 16146299 16176424 16183082 16195699 16199728 16206305 16208252 16208257 16210672 16234531 Car ECM selection by model year and engine type: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1.6 OHC L4 TBI “6” L73 (LeMans) 1227303 1227303 1227303 1227303 1227303 1227303 1.9 L4 TBI “9” (Saturn) … … … 1.9 L4 PFI “7” (Saturn) … … … 2.0 OHC L4 TBI “K” LT2 (LeMans) 1227303 1227303 1227303 2.0 L4 TBI “P” LQ5 1227165 2.0 L4 TBI “1” LL8 1227730 1227730 1228321 1228321 2.0 OHC L4 TBI “K” LT2 1227748 1227748 1227748 1227748 1227748 2.0 OHC L4 PFI turbo “M” LT3 1227749 1227749 1227749 1227749 2.0 OHC L4 PFI “H” LE4 16159282 16159282 16159282 16196393 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 2.2 L4 TBI “G” LM3 1227748 1227748 2.2 L4 PFI “4” LN2 16134847 16134847 16191947 16191947 2.3 DOHC L4 PFI “D” LD2 (exc. “W” body) 1227749 1227749 1228707 1228707 1228707 16156450 16173278 16183978 16183978 16191947 16193700 16196285 2.3 DOHC L4 PFI “D” LD2 (“W” body) 1228708 1228708 2.3 DOHC L4 PFI “A” LG0 (exc. “W” body) 1228707 1228707 1228707 16156450 16156450 16173278 16191947 2.3 DOHC L4 PFI “A” LG0 (“W” body) 1228708 2.3 DOHC L4 PFI “3” L40 16156450 16173278 16191947 2.5 L4 TBI “R” LR8 (exc. “W” body) 1227748 1227748 1227748 1227748 1227748 1227748 2.5 L4 TBI “R” LR8 (“W” body) 1227727 1227727 1227727 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 2.5 L4 TBI “U” L68 1227748 1227748 1227748 1227748 1227748 2.8 V6 PFI “W” LB6 (exc. “W” body) 1227730 1227730 1227730 2.8 V6 PFI “W” LB6 (“W” body) 1227727 1227727 3.1 V6 PFI “T” LH0 (exc. “W” body) 1227730 1227730 1227730 1227730 1227730 1227730 3.1 V6 PFI “T” LH0 (“F” body) 16196404 16196404 16196404 3.1 V6 PFI “T” LH0 (“W” body) 1227727 1227727 1227727 1227727 1227727 16149396 3.1 V6 SFI “T” L82 16184164 3.1 V6 SFI “M” L82 16196387 16196387 3.1 V6 PFI turbo “V” LG5 1227727 1227727 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 3.3 V6 PFI “N” LG7 1228706 1228706 1228706 1228706 1228706 3.4 DOHC V6 PFI “X” LQ1 16149396 16149396 16149396 3.4 DOHC V6 SFI “X” LQ1 16196401 16196401 3.8 V6 SFI “C” LN3 1228253 1228253 1228253 1228253 3.8 V6 SFI “L” L27 (exc. “W” body) 16141470 16141470 16141470 16183247 16183247 3.8 V6 SFI “L” L27 (“W” body) 16132792 16132792 16132792 3.8 V6 SFI “K” L36 16183247 3.8 V6 SFI supercharged “1” L67 16141470 16141470 16141470 16183247 16183247 5.0 V8 TPI “F” LB9 1227165 1227165 1227165 1227165 1227730 1227730 1227730 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 5.7 V8 TPI “8” L98 (“F” body) 1227165 1227165 1227165 1227730 1227730 1227730 5.7 V8 TPI “8” L98 (“Y” body) 1227165 1227165 1227165 1227165 1227727 1227727 5.7 V8 TPI “P” LT1 16159278 16159278 5.7 DOHC V8 SFI “J” LT5 1228331 1228331 16163993 16163993 16163993 16163993 Truck ECM selection by model year and engine type: 1987 1988 1989 1990 1991 1992 1993 1994 1995 2.2 L4 PFI “4” LN2 16199982 2.5 L4 TBI “E” LN8 1227165 1227165 1227165 1227165 1227165 2.5 L4 TBI “A” L38 1227165 16156647 16156647 3.8 V6 SFI “L” L27 16141470 16141470 16183247 16183247 4.3 V6 TBI “Z” LB4 4.3 V6 CPI “W” L35 16156647 16156647 4.3 V6 PFI turbo “Z” LB4 1227749 1227749 1227749 5.0 V8 TBI “H” L03 5.7 V8 TBI “K” L05 1987 1988 1989 1990 1991 1992 1993 1994 1995 7.4 V8 TBI “N” L19 1227165 16198259 Schematic Application: 1986 2.0 L4 TBI “P” LQ5 w/ MT 1986-89 5.0 V8 TPI “F” LB9 1986-89 5.7 V8 TPI “8” L98 1987-91 truck 2.5 L4 TBI “E” LN8 1991 truck 2.5 L4 TBI “A” L38 MEMCAL IDs: “P”: CRY, CRZ, … “F”: AUM, ACXT, AKFM, AKFR, … “8”: BUA, AANK, AANL, APYP, APYU, AUJM, … “E”: ADHF, AMJW, ASWY, AXAA, … “A”: AUXH, … EPROM type: 27C128 1227277 Schematic Description: 1227808 w/o O2 input Application: Australian L4 TBI EPROM type: 27C128 1227303 Schematic Description: 1227752 w/ one missing quad driver Application: 1988-93 1.6 OHC L4 TBI “6” L73 (LeMans) 1988-90 2.0 OHC L4 TBI “K” LT2 (LeMans) MEMCAL IDs: “6”: ACXP, ACXR, AXCF, ASFM, … “K”: ANAB, … EPROM type: 27C128 1227727 16197128 16198260 Schematic More info Description: 1227730 in underhood case Application: 1990-92 2.5 L4 TBI “R” LR8 (“W” body) 1988-89 2.8 V6 PFI “W” LB6 (“W” body) 1989-93 3.1 V6 PFI “T” LH0 (“W” body) 1989-90 3.1 V6 PFI turbo “V” LG5 1990-91 5.7 V8 TPI “8” L98 (“Y” body) MEMCAL IDs: “R”: APTW, … “W”: AMAS, APWM, ATRA, … “T”: ARCX, ARZW, ATSN, ATSP, AUMY, … “V”: ASAN, ASMF, ATMJ, ATMK, AUAD, AUAF, AUFR, AZRC “8”: ANHT, ARFP, … EPROM type: 27C128 or 27C256 1227730 16196344 16198262 Schematic More info Application: 1987 2.0 L4 TBI “1” LL8 1988 2.0 L4 TBI “1” LL8 (early) 1987-89 2.8 V6 PFI “W” LB6 (exc. “W” body) 1988-94 3.1 V6 PFI “T” LH0 (exc. “W” body) 1990-92 5.0 V8 TPI “F” LB9 1990-92 5.7 V8 TPI “8” L98 (“F” body) MEMCAL IDs: “1”: FML, AAST, ADDT, ADDU, … “W”: AAWW, AAXM, ADBT, ADBU, ADCM, ADDB, ADPK, ADPL, ADPP, ADRJ, ADRR, ADRU, ADRX, ADRY, ADRZ, ADSB, ALZN, ALZT, AMAP, ANKK, ANWA, APWD, ARBX, ARCN, ARDC, ARXU, ARYH, ASMJ, ASMK, ASMW, ASMX, ASNA, ASNB, ASWD, ATZD, ATZF, … “T”: ARUT, AUAR, AZTY, … “F”: … “8”: AUJP, … EPROM type: 27C128 or 27C256 1227748 Schematic Description: Two edge card connectors, uses EPROM instead of MEMCAL Application: 1987-91 2.0 OHC L4 TBI “K” LT2 1990-91 2.2 L4 TBI “G” LM3 1987-92 2.5 L4 TBI “R” LR8 (exc. “W” body) 1987-91 2.5 L4 TBI “U” L68 MEMPAK IDs: “K”: ABLT, ACXK, ALWK, ATWA, … “G”: ATLA, ATXC, ATXD, AUJU, … “R”: ABKB, ACMA, ACMB, ACMF, ACMH, ADSJ, ADSK, ALWM, ANAM, ATBS, ATBM, … “U”: ABKH, ACMC, ANML, ASLA, ATBU, … EPROM type: 27C128 1227749 16198263 More info Schematic Description: 1227730 w/ one missing quad driver, w/ additional injector driver FET Application: 1987-90 2.0 OHC L4 PFI turbo “M” LT3 1987-88 2.3 DOHC L4 PFI “D” LD2 1991-93 truck 4.3 V6 PFI turbo “Z” LB4 MEMCAL IDs: “M”: AFDZ, ALBK, AMUW, AUWS, … “D”: AMDB, AMDD, AMDF, ARPZ, … “Z”: AWXJ, AXXA, AYBM, AYBN, BBZA, BBZB, DOAC EPROM type: 27C128 or 27C256 1227752 Schematic Description: 1227165 in short case Application: 1987 1.5 L4 PFI turbo “9” (Isuzu) 1988-89 1.5 L4 PFI turbo “9” (Isuzu) 1989 1.6 DOHC L4 PFI “5” (Isuzu) MEMCAL IDs: “9”: ARB… “5”: … EPROM type: 27C128 1227808 Schematic Description: 1227165 w/o 8192 baud ALDL Application: Australian MEMCAL IDs: ASBX, … EPROM type: 27C128 1228253 16198264 More info Schematic Description: Six cylinder sequential injection Application: 1988-91 3.8 V6 SFI “C” LN3 MEMCAL IDs: AJRZ, AJSA, ANBF, ATXY, … EPROM type: 27C256 1228321 Schematic Description: Two edge card connectors, uses EPROM instead of MEMCAL Application: 1988 2.0 L4 TBI “1” LL8 (late) 1989 2.0 L4 TBI “1” LL8 MEMPAK IDs: ABKL, AKZA, ARRM, ARRN, ARRP, … EPROM type: 27C128 1228331 Application: 1990-91 5.7 DOHC V8 SFI “J” LT5 1991 Vauxhall Lotus Carlton 3.6 Twin Turbo MEMCAL IDs: “J”: ANHX, AUAH, ARZR, AXFK, AYBK, BFXB Lotus: AXSH, … EPROM type: 27C256 1228706 16198266 Schematic Application: 1989-93 3.3 V6 PFI “N” LG7 MEMCAL IDs: ALCA, ANWM, ANWN, ANWR, ASJU, ASJX, AXUP, … EPROM type: 27C256 1228707 16198267 Application: 1989-91 2.3 DOHC L4 PFI “D” LD2 (exc. “W” body) 1989-91 2.3 DOHC L4 PFI “A” LG0 (exc. “W” body) MEMCAL IDs: “D”: ANMP, ANZF, ARHM, ASDD, ASDF, … “A”: … EPROM type: 27C256 1228708 Application: 1990-91 2.3 DOHC L4 PFI “D” LD2 (“W” body) 1990 2.3 DOHC L4 PFI “A” LG0 (“W” body) MEMCAL IDs: “D”: ANLP, … “A”: … EPROM type: 27C256 16132792 Application: 1990-92 3.8 V6 SFI “L” L27 (“W” body) MEMCAL IDs: AZKT, … EPROM type: 27C256 16134847 Application: 1992-93 2.2 L4 PFI “4” LN2 CAL IDs: BAYK, … ROM type: EEPROM 16141470 Application: 1991-93 3.8 V6 SFI “L” L27 (exc. “W” body) 1991-93 3.8 V6 SFI supercharged “1” L67 1992-93 truck 3.8 V6 SFI “L” L27 MEMCAL IDs: “L”: … “1”: … EPROM type: ???? 16146299 Description: ECM Application: Australian EPROM type: 16147060 Application: 1991-93 truck 5.7 V8 TBI “K” L05 MEMCAL IDs: “K”: BAJP, … … EPROM type: 27C256 16149396 Schematic Description: 1227727 w/ additional SRAM Application: 1993-94 3.1 V6 PFI “T” LH0 (“W” body) 1991-93 3.4 DOHC V6 PFI “X” LQ1 MEMCAL IDs: “T”: BDJS, … “X”: AYSZ, BBUK, BCDT, BCFA, … EPROM type: 27C256 16153597 Description: Dual injector driver FETs, uses 1227752 case Application: 1990 1.6 SOHC L4 PFI “6” (Geo & Isuzu) 1991 1.6 SOHC L4 PFI “6” (Geo & Isuzu) 1992-93 1.6 SOHC L4 PFI “6” (Geo & Isuzu) 1990-92 1.6 DOHC L4 PFI “5” (Geo & Isuzu) 1992-93 1.8 DOHC L4 PFI “8” (Geo & Isuzu) 1991-92 1.6 DOHC L4 PFI turbo “4” (Isuzu) … CAL IDs: “6”: AUUC, … ROM type: EEPROM 16156647 Application: 1992-93 truck 2.5 L4 TBI “A” L38 1992 truck 4.3 V6 CPI “W” L35 1994 truck 4.3 V6 CPI “W” L35 w/ MT MEMCAL IDs: “A”: … “W”: BAWP, BCBH, … EPROM type: 27C256 16139060 16159278 Application: 1993 5.7 V8 TPI “P” LT1 (“F” body) 1992-93 5.7 V8 TPI “P” LT1 (“Y” body) MEMCAL IDs: BAFL, BDBK, BDZP, … EPROM type: 27C256 16159282 Application: 1992-93 2.0 OHC L4 PFI “H” LE4 1994 2.0 OHC L4 PFI “H” LE4 w/ MT MEMPAK IDs: … EPROM type: … 16163993 16196394 Application: 1992-95 5.7 DOHC V8 SFI “J” LT5 MEMCAL IDs: AYWT, … EPROM type: 27C256 16168625 Application: 1993-94 truck 5.7 V8 TBI “K” w/ 4L60E … MEMCAL IDs: BHMX, … EPROM type: 16176424 Description: Two plugs, case like 1227165, PCM Application: 1993+ Australian V6 w/AT (Holden Commodore VR) 1993+ Australian V8 w/AT (Holden Commodore VR & VS) MEMCAL IDs: BFFK, BFPL, BKCZ, BLCC, BMZA, BMZC, … EPROM type: 27C512 16183082 Description: 1227808 w/ 8192 baud ALDL Application: 1993+ Australian V6 w/MT (Holden Commodore VR) 1993+ Australian V8 w/MT (Holden Commodore VR & VS) MEMCAL IDs: BJKS, BLCD, BLCF, BLJX, BMZL, … EPROM type: 27C256 16183247 Application: 1994-95 3.8 V6 SFI “L” L27 1995 3.8 V6 SFI “K” L36 1994-95 3.8 V6 SFI supercharged “1” L67 1994-95 truck 3.8 V6 SFI “L” L27 MEMCAL IDs: “L”: BMYU, … “1”: … “K”: … EPROM type: 27C512 16186695 Application: 1993 truck 5.7 EPROM type: 16191947 Application: 1994-95 2.2 L4 PFI “4” LN2 1994 2.3 DOHC L4 PFI “A” LG0 1994 2.3 DOHC L4 PFI “3” L40 1995 2.3 DOHC L4 PFI “D” LD2 MEMCAL IDs: “4”: BJCA, … “A”: … “3”: … “D”: … EPROM type: 27C512 16195699 Description: 16176424 w/ RFI screened plugs Application: 1993+ Australian V6 w/AT (Holden Commodore VR) 1993+ Australian V8 w/AT (Holden Commodore VR & VS) MEMCAL IDs: BKDA, BWCS, BWFU, … EPROM type: 27C512 16196393 Application: 1994 2.0 OHC L4 PFI “H” LE4 w/ AT MEMPAK IDs: BJCF EPROM type: … 16196395 Application: 1994 truck 4.3 V8 CPI “?” L35 1994 truck 5.7 V8 TBI “?” L05 1994 truck 7.4 V8 TBI “?” L19 MEMCAL IDs: BHDF, BHRJ, BJDR, … EPROM type: 27C512 16196401 16173300 Application: 1994-95 3.4 DOHC V6 PFI “X” LQ1 MEMCAL IDs: BCFD, BFRS, BHZW, BHLJ, BKLK, BKLL, BPCJ, BPCK, BSBH EPROM type: 27C256 16196404 Application: 1990-92 3.1 V6 PFI “T” LH0 MEMCAL IDs: BMCD EPROM type: ???? 16197427 Application: 1995 truck 5.7 V8 TBI “K” L05 MEMCAL IDs: BJYA, BJYM, … EPROM type: 27C512 16199728 16210672 Description: Three plugs, no resistor packs, PCM Application: 1995+ Australian V6 w/AT (Holden Commodore VS) MEMPAK IDs: BRHP, BSTK, BWPJ, … EPROM type: 27C010 16199982 Application: 1994 truck 2.2 L4 PFI “4” LN2 … EPROM type: 16206305 Description: Like 16183082 Application: Australian EPROM type: 16208252 Description: Like 16176424 Application: 1993+ Australian LP-Gas V6 (Holden Commodore VR) MEMCAL IDs: BLYN, … EPROM type: 27C512 16208257 Description: 16199728 w/ RFI screened plugs Application: 1995+ Australian V6 w/AT (Holden Commodore VS) MEMPAK IDs: BSTH, … EPROM type: 27C010 16234531 Description: PCM Application: Australian EPROM type: pitzel and jiggity76 2 Quote
jiggity76 Posted January 6, 2020 Report Posted January 6, 2020 I don't understand any of this but I'm mesmerized by it. Fantastic! Quote
55trucker Posted January 6, 2020 Report Posted January 6, 2020 (edited) what is it that you are having problems understanding? in the OP's case he has a 1992 vehicle, the car platform is W (W body) the engine is T code (LH0) the ECM used in that platform/model/engine/year is 1227727 there are 5 memcal's used in that ECM casing.............. ARCX, ARZW, ATSN, ATSP, AUMY his original ECM prom chip will match one of those listed Edited January 6, 2020 by 55trucker jiggity76 1 Quote
White92Cutlass Posted January 11, 2020 Author Report Posted January 11, 2020 On 1/5/2020 at 9:13 PM, 55trucker said: what is it that you are having problems understanding? in the OP's case he has a 1992 vehicle, the car platform is W (W body) the engine is T code (LH0) the ECM used in that platform/model/engine/year is 1227727 there are 5 memcal's used in that ECM casing.............. ARCX, ARZW, ATSN, ATSP, AUMY his original ECM prom chip will match one of those listed I took the ecm out of the 1993- the number on it was not 1127727 (that number was not on it anywhere) so I'm guessing that one won't work. I found the ecm from the 1991 Cutlass and all numbers on the outer housing are completely unreadable. The PROM has the exact same numbers as the 1992 PROM (Delco, 9733, 9733), but the little blue plastic casing that holds the PROMs in doesn't match. 1992 PROM casing says Delco BAUH 6334 and the 1991 Prom casing says AUSJ 2569. Will the 91 ecm still work in the 92 if I put the 92 PROM in it? Thanks! Quote
55trucker Posted January 11, 2020 Report Posted January 11, 2020 BAUH should be '92 T code W body.....I believe that AUSJ is the prom for T code W body 91, not sure if that is for a manual or auto trans. you need to know what ECM you have, both of those proms will work but the ECM needs to be the 1227727. I take it that what you do have are the weatherproof casings? Quote
White92Cutlass Posted January 11, 2020 Author Report Posted January 11, 2020 51 minutes ago, 55trucker said: BAUH should be '92 T code W body.....I believe that AUSJ is the prom for T code W body 91, not sure if that is for a manual or auto trans. you need to know what ECM you have, both of those proms will work but the ECM needs to be the 1227727. I take it that what you do have are the weatherproof casings? I bought the '91 with a blown head gasket and I took the ecm out of it myself about 10 years ago. It was an automatic car. My understanding is that all of the 91's had the 1227727 ecm so it should be interchangeable. I just put the 92 PROM in the 91 ecm and installed it in the 92 Cutlass. It started right up but idled much worse than with the old ecm and it still smoked like a freight train. I let it run and it died after about 5 minutes. Was hard to start again, but got it going and took it down the road. Died at a stop sign a half mile down the road and the battery went dead trying to start it. Got a jump start and drove it home. Died at my driveway and would not start again. Put jumper cables on it and tried off and on to get it to start for an hour but was unsuccessful. Any idea what the issue is? Thanks. Quote
55trucker Posted January 11, 2020 Report Posted January 11, 2020 Is the engine running long enough to set either a code 51 or code 55?...ECM prom error & faulty ECM. A hard start situation can be caused by a CTS issue, if the ECM is seeing a too cold signal (out of range of that of the ambient temp) from the CTS that will make starting difficult and the engine will die. Quote
White92Cutlass Posted January 11, 2020 Author Report Posted January 11, 2020 No check engine light during the brief time it was running. What is CTS? Never had a hard start with the old ecm- always started immediately and always started back up immediately when it died. Quote
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