Doug (205.200.35.200) - Wed Dec 26 16:07:44 2007

I have a 91 lumina apv with 3.1 V6. It started to have no throttle response and would almost die if you stepped on the throttle. I changed the oxygen sensor - no help. I jumped the diagnostics and it showed code 34 - MAF sensor - these don't have one. Guy at local NAPA said to change the MAP sensor (these covered the MAF sensor on older vehicles) at air cleaner housing. I did this and still no help. I even took of the positive cable to see if it would re-set itself. Any ideas?

Thanks,

Doug

Reply #1 Mike Hoback (70.178.107.238) - Sun Aug 24 15:05:15 2008

There are a couple of things to try. One I would test the ignition control module, it's inside the distributor. It's not hard to remove and local parts stores can test them. Check the fuel pressure, there is a valve on the back of the intake that when the car has just ran or even when cranking it, there will be pressure at that spot. You will hook up the fuel pressure tester there. Also, you can have someone listen by the fuel tank for a humming sound when you hit the key. That is the sound of the fuel pump priming the engine. Give these a try and see what you find.

Reply #2 WENDY (98.226.145.24) - Fri Mar 6 03:02:13 2009

I HAD THAT PROBLEM AND HAD THE FUEL FILTER CHANGED AND IT WAS ALL BETTER!!!

Reply #3 Ray (12.219.74.112) - Sat Apr 11 11:55:35 2009

I have a 1994 chevy lum apv. 3.8L- engine misses on all cyls. cuts out and will not run for 15-30 minutes. During this time the is no injector signal and fuel pressure is fine. spray fuel into cpi and it cranks and dies. fresh tuneup adn ign module. coils ohm test fine. Any ideas?

Ray

Reply #4 ashish (98.203.1.0) - Sun Apr 12 21:44:38 2009

i have a 91 Chevy lumina EURO 3.1 . . and the problem is is somewhat similar

When the engine gets hot ( say about 20 mins of driving) and you shut it down and let it rest of r 5~10 mins . . it wont start . . itll crank but wont turn over . . . itll only start if it has sufficiently cooled down . . .

i ve heard heard in multiple posts that its the ECM. . . but i want to make sure that its the ECM and nothing else . .

Reply #5 fred (64.180.221.36) - Fri May 8 19:10:40 2009

i have a 91 lumina 3.1 once hot (20 minutes of driving)will run really rough and wont accelerate and back fire out the exhaust wait a little bit and runs perfectly fine

Reply #6 srsairbags (98.203.1.0) - Sun May 31 18:47:19 2009

same ing thing with my 91 chevy lumina . . . when hot it does its crazy thing . . . wont start . . some times would start if you spray starting fluid in the air filter hose split hole . . . also look out for leaks in that hose in the throttle body side . . . and clean the throttle plate with carb cleaner also do the same for EGR valve . . . this issue has nothing to do with the fuel pump . . . pressure is about 40psi steady . . . . its either the intake/ intake manifold or the ECM or the Ignition module . . . somebody please help . . . .

Reply #7 court (204.210.180.164) - Fri Jun 26 18:18:35 2009

my car is crappy.

it stals and sumtimes wont start back up unless it sits for 5 minutes-then it stalls 2 sec. later.

it only happens when im going low speed and stop.

its a 91 chevy lumina. i bought it for only 700. and i have had it for not even a year and i already put more money into it then what i bought it.

it ran good b4 too, and nothing was wrong with it. now all of a sudden its fallin apart. saaad =(

new battery

new breaks front and back

and new wheel berren (?)

STRESSIN!!!! =/

Reply #8 court (204.210.180.164) - Fri Jun 26 18:18:49 2009

my car is crappy.

it stals and sumtimes wont start back up unless it sits for 5 minutes-then it stalls 2 sec. later.

it only happens when im going low speed and stop.

its a 91 chevy lumina. i bought it for only 700. and i have had it for not even a year and i already put more money into it then what i bought it.

it ran good b4 too, and nothing was wrong with it. now all of a sudden its fallin apart. saaad =(

new battery

new breaks front and back

and new wheel berren (?)

STRESSIN!!!! =/

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