Car starts runs lean and dies

[mattminot87]

Here is my problem,yesterday i was doing a couple cruise logs, not even in boost and i stopped at a friends house real quick and it all of a sudden died on me, my car will start right up and then immediately idle low and stall, i can keep it running by taping the gas very fast repeatedly if you hold the peddle down it dies, only reves to 2200rpm. the wideband goes all the way lean and stays there and the front o2 voltage goes to 0.00v, i just put new tb seals in and did a boost leak test, no leaks at all, new plugs wires and fuel filter, fuel pressure is at 42 psi when this is happening, tried 3 different gm maf sensors didnt make a difference. changed out the maft translator for new one still no difference, checked for codes there are none,

Mods are as follows:
dsmlink, t3 tubular manifold, holset h1c t3 hotside 18cm, fic 550cc, fmic, gm maf 3" maft, fuel lab fpr, graveyard 274 regrind cams, 3g lifters, arp head studs, aem wideband, wally 255 with rewire, ss fuel lines, tial 44mm wastegate, tial 50mm Bov, brand new coilpack, new tps sensor, new coolant temp sensor.

ill post a log maybe it will help but dsmlink worked fine before this happened, any help would be greatly appreciated, thanks

 

[aspekt9]

When was the last time you did a compression test?

 

[mattminot87]

a couple weeks ago and it was fine but ill do one tomorrow.

 

[Absit]

Have you tested your MAF? I haven't been able to look at the log yet..

 

[mattminot87]

Just did a compression test 140 across the board, plugs are black already, problem changed a little though i had a bad fuse in the cockpit fuse box replaced it and it still does the same thing but will rev up all the way if i keep taping the gas and the wideband goes rich for a second and then back to lean, and i tried 3 different maf sensors and no change, what else could it be?Timing?

Anyone?

 

[Vincent Pandolph]

Did you fix this yet? I have a 90 talon AWD, I rebuilt sending unit and replace all lines to dash 6 fuel lab fpr, all was fine and running well and all of a sudden dead on the road. Ended up being a blown rubber hose between pump and sending unit. I bought another pump before I investigated so I put it in anyway. I'm putting it back together tomorrow. Lmk what was your issue

 

[enriquez2000]

battery starts off at 11.8 then dips to 8. it then comes back to only 10v around 700 rpm. It then only hits 12v at 1100 rpm and 13v requires 1300 rpm on your log

Im going to say alternator and or battery issues.

 

[CKOPOCT]

This thread is old. OP posted his problem over a decade ago (25 Apr 2011).

 

[enriquez2000]

This thread is old. OP posted his problem over a decade ago (25 Apr 2011).

Good catch... i just saw an issue and ran with it

 

[CKOPOCT]

Just shows your willingness to help others. Props!

 

[enriquez2000]

Just shows your willingness to help others. Props!

Just wish he could confirm Im right ☺