Okay Code decipherers 3.1 Monte

[chevygirl8]

See my last post:

http://www.w-body.com/forum/index.php/topic,61679.0.html

 

Here is the code:

P0300 Random Misfire

hmmm not much there.

 

Details

 

TPS = 8.24%

Fuel System 1 = CL (closed loop)

Fuel System 2 = CL-FAULT (interesting)

Calc Load = 9.80%

ECT = 194 deg

STFT B1 = -4.69%

LTFT B1 = -14.84%

MAP = 10.63

Eng RPM = 2323

Veh Sp = 110 (nah just kidding = 72)

MAF = 1.95 lb/min

TPS = 8.24%

 

Okay whats Fuel System 2 [Fault] all about?

 

Help!

 

CG8

[Brian P]

That fault may come up when one "set" of injectors has a short, or resistance out of range. So you may have an injector stuck open or shorted out. I'll try to look more into it on mitchell data, if someone doesn't help you before then.

[timestalker45]

if its the 3.1mfi then yes i'd say it would be an injector failer just from what u described if its the 3100sfi then i dont know...

aslo the fault is second in the scan, the first part of the fuel system is on the pum its self the second deals with engine componets (injectors, and fuel pressure)

i cant remeber if the pressure is also checked at the pump but from what my mechanic told me a while back then it depends on year and style

[MonteCarloChick]

It's a 3100.

[timestalker45]

ok and the sytomps have been loos of power correct it could be the injector still try using lucas fule cleaning system its probably clogged still but if not then form letting ge tthat dirty probably seazed up like the other guy said

[Andrew]

That fault may come up when one "set" of injectors has a short, or resistance out of range. So you may have an injector stuck open or shorted out.

i am thinking the same.

[chevygirl8]

Good stuff, thanks.

 

One more thing. When it quit, it quit. Would not start only sputter.

After an hour it ran great (for a few minutes). I've had 1 injector go bad,

and it still ran.

Now I can't get the "serv eng soon" to come on and it runs pretty good.

I don't want to get stranded again so I want to fix the problem.

 

If I got some bad gas (water, dirt) could that be it?

[slick]

It's possible that it would perform the symptoms.

 

 

if its the 3.1mfi then yes i'd say it would be an injector failer just from what u described if its the 3100sfi then i dont know...

 

Why wouldn't you know. They run essentially the same. In fact, the 3100 sfi is only sfi for a very short time. It mainly runs in mpfi.

[timestalker45]

a) ok the sfi has a few adisional parts that are all electrical relaited if say somthing in the program doesnt fire right then it could be that not the fuel system its self but it would through that code do to an injector not working propperly

 

b)the check engine light turning on originaly is a sign of a fault not bad gas

so no its not the gas its the injector or some other internal problem (computer) unless the cleaner u used finaly unjamened the injector.

 

c)all i can say is to use gas from same gas brand dont keep going to snoco the mobile then getti or what ever stay with one gas brand second use more injector cleaner, + look for any like stutters in the tac c if when u idle if it pulses usualy means u have a bad injector