hopefulfan_dc Posted May 7, 2005 Report Share Posted May 7, 2005 My 1990 International is hard to start cold and killing gas. I can't get my plugs in all the way, it seems like the threads are off. I couldn't even get the old on back in. I need to know what is the fix...I don;t have mucj money so it goes like this. Hard to start when cold, if I try to drive off cold, cuts off...only when cold Bad gas mileage...especially in the city Hesitates a bit Rough Idle Loss of Power What should I do: Fuel Filter??? which one is best Air filter is clean Plugs...read above Service Engine light On....which sensor do you think I changed oil but it keeps telling me to change oil...5 qts of 5W-30 I am out of suggestions...I know it's omething small but gas isn't cheap in DC!!!!!!! HEEELP Quote Link to comment Share on other sites More sharing options...
skiiirt Posted May 7, 2005 Report Share Posted May 7, 2005 for the hard start I would replace the fuel pressure regulator if your fuel pump is still good, I'd get those plugs fixed as thats probibly whats causing you all your grief for the gas mileage clean your egr valve Quote Link to comment Share on other sites More sharing options...
pitzel Posted May 7, 2005 Report Share Posted May 7, 2005 The oil issue is simple -- just go into the 'oil' page of the DIS, and hold down reset for a minute. The oil reminder will go away. Fix the plugs definitely. Look at the homepage of this site and follow the instructions to pull whatever codes the ECM is showing. Those might give you a few more hints. Quote Link to comment Share on other sites More sharing options...
Tru2Chevy Posted May 9, 2005 Report Share Posted May 9, 2005 How is the O2 sensor? If it's old it will def. cause a rough idle and poor milage. May not throw a code unless its completely dead. - Justin Quote Link to comment Share on other sites More sharing options...
phantomshado Posted May 10, 2005 Report Share Posted May 10, 2005 check for vacuum leaks. it'll drive like hell if there is a leak. Quote Link to comment Share on other sites More sharing options...
digitaloutsider Posted May 10, 2005 Report Share Posted May 10, 2005 What should I do:Fuel Filter??? which one is best They're pretty much all the same. I use Purolator (since that's all I can find) Plugs...read above Try some good ol' AC Delco's. Stay away from Bosch Service Engine light On....which sensor do you think Pull the codes with the instructions in the W-body FAQ's. It's really easy. Quote Link to comment Share on other sites More sharing options...
loominaz34 Posted May 10, 2005 Report Share Posted May 10, 2005 You need to change the O2 sensor. I had the same problem in my Z and within 2 bolcks of the test drive,the problems were gone. It should cost about 20 bucks for the O2 sensor. I dont know about gas milage, though. Quote Link to comment Share on other sites More sharing options...
topless94style Posted May 10, 2005 Report Share Posted May 10, 2005 Bad gas mileage? You drive a wbody, its a tank Quote Link to comment Share on other sites More sharing options...
94CutlassSLCoupe Posted May 10, 2005 Report Share Posted May 10, 2005 do the fuel filter first...you probably need one anyway! My W gets about 21 city and 30 or more on the Highway...which is pretty damn good for a v6 car of any kind! Quote Link to comment Share on other sites More sharing options...
Prospeeder Posted May 11, 2005 Report Share Posted May 11, 2005 yea, my TGP gets 24-27 city and 29-35 Highway, so there not gas guzllers Quote Link to comment Share on other sites More sharing options...
88Regal Limited Posted May 14, 2005 Report Share Posted May 14, 2005 yea, my TGP gets 24-27 city and 29-35 Highway, so there not gas guzllers My weenie 2.8 gets around 15, maby 17 highway!!! I think they're gas guzzlers, or somthing is wrong with my 2.8.... Quote Link to comment Share on other sites More sharing options...
White93z34 Posted May 14, 2005 Report Share Posted May 14, 2005 i think you need to address your problem of the spark plugs not going in all the way. you gotta be looseing compression that way. get some good ACD plugs and get them in all the way without striping your heads. Quote Link to comment Share on other sites More sharing options...
93CutlassSupreme Posted May 20, 2005 Report Share Posted May 20, 2005 yea, my TGP gets 24-27 city and 29-35 Highway, so there not gas guzllers My weenie 2.8 gets around 15, maby 17 highway!!! I think they're gas guzzlers, or somthing is wrong with my 2.8.... 2.8's are hard on gas Quote Link to comment Share on other sites More sharing options...
Prospeeder Posted May 21, 2005 Report Share Posted May 21, 2005 i find that hard to belive, cause many 3.1 owners including myself have gotten great gas milege in the 30's, and the 2.8 is even smaller, pretty much the same motor Quote Link to comment Share on other sites More sharing options...
Redwingvksm Posted May 21, 2005 Report Share Posted May 21, 2005 i find that hard to belive, cause many 3.1 owners including myself have gotten great gas milege in the 30's, and the 2.8 is even smaller, pretty much the same motor I'd say i'm up around 32 MPG for highway (65/70 MPH) But the city drops to around 15 (Very heavy foot, lots of stop-n-go) I love my gas mileage in my 3.1... Quote Link to comment Share on other sites More sharing options...
cutlsp Posted May 21, 2005 Report Share Posted May 21, 2005 something is wrong with your guy's 2.8s i get 33.5 mpg highway most of the time. in the city its not as good because i have to give it quite a bit of gas to get moving and keep from getting rear ended by trucks. :? Quote Link to comment Share on other sites More sharing options...
Prospeeder Posted May 21, 2005 Report Share Posted May 21, 2005 LOL!! gotta floor it to get going, i get 33-37 mpg in my TGP on highway, woooo hhoo!! and city is in the 20-27 range usually, we dont havea huge city, so its not constant stoping and going Quote Link to comment Share on other sites More sharing options...
cutlsp Posted May 21, 2005 Report Share Posted May 21, 2005 i admit in the city my car gets the same mile per gallons as my truck gets as highway miles. Quote Link to comment Share on other sites More sharing options...
1990lumina Posted May 21, 2005 Report Share Posted May 21, 2005 My mom's car and my Lumina w/ 3.1 get the best mileage on the highway - however her car is way better in the city then mine could dream of.. Here's a quick run odwn of what all my families cars' get (I dunno if this a fuel economy thread...but it seems to have turned into one) Listed from best to worst in regards to highway 1999 Acura 3.0 CL - 34 highway, 23 city 1990 Chevrolet Lumina 3.1 - 31 highway, 17 city(heavy foot to get the land yacht moving) 1996 Chevrolet Suburban 6.5TD - 25 highway, 19-20 city 1995 Ford Taurus 3.0 - 24 highway, 16-17 city 1985 Mazda RX-7 2 rotor rotary engine 1.1L w/ 4barrel carb (12a) 19 highway, 14-15 city:D lol...gotta love shittest mileage of them all, plus the added cost of maintaince of the rotary lol - Jeff L. Quote Link to comment Share on other sites More sharing options...
93CutlassSupreme Posted May 21, 2005 Report Share Posted May 21, 2005 my 3.1 never got good milage either Quote Link to comment Share on other sites More sharing options...
GP1138 Posted May 21, 2005 Report Share Posted May 21, 2005 my 3.1 never got good milage either Hey! Good to see you again! Quote Link to comment Share on other sites More sharing options...
93CutlassSupreme Posted May 22, 2005 Report Share Posted May 22, 2005 my 3.1 never got good milage either Hey! Good to see you again! What's new, John? 8) Quote Link to comment Share on other sites More sharing options...
Dan94Z34 Posted May 22, 2005 Report Share Posted May 22, 2005 Just dont shove the plugs in there like the previous owner of my late Beretta did. I was driving it to college one day and the plug in the back cylindar head flew out. The threads were fucked, so I had to pull the rear head off, and get a different one from a junk yard and slap it on. Quote Link to comment Share on other sites More sharing options...
GP1138 Posted May 22, 2005 Report Share Posted May 22, 2005 Just dont shove the plugs in there like the previous owner of my late Beretta did. I was driving it to college one day and the plug in the back cylindar head flew out. The threads were fucked, so I had to pull the rear head off, and get a different one from a junk yard and slap it on. That happened to my old 2.8 in the GP I used to have. I helicoiled it, twice (again after my rush job, which lasted ~5months :shock: ) and it didn't give me problems. Quote Link to comment Share on other sites More sharing options...
digitaloutsider Posted May 22, 2005 Report Share Posted May 22, 2005 Just dont shove the plugs in there like the previous owner of my late Beretta did. I was driving it to college one day and the plug in the back cylindar head flew out. The threads were fucked, so I had to pull the rear head off, and get a different one from a junk yard and slap it on. That happened to my old 2.8 in the GP I used to have. I helicoiled it, twice (again after my rush job, which lasted ~5months :shock: ) and it didn't give me problems. I remember reading about that when it happened Quote Link to comment Share on other sites More sharing options...
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