1994 Pontiac Grand Am engine problem

Tiny
DAVID SATTERLEY
  • MEMBER
  • 1994 PONTIAC GRAND AM
Hello,

I have a 1994 pontiac grand am with a 2.3 L SOHC 4 cylinder. Up until a few days ago, the car ran fine. Now, it won't idle, runs very rough and does not have enough power to move on it's own. I replaced the fuel filter, ran it completey out of gas and refilled the tank and replaced the map sensor with no help. We checked and cleaned the plugs and plug wires also with no results. Please help
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Monday, June 26th, 2006 AT 12:16 PM

7 Replies

Tiny
DAVID SATTERLEY
  • MEMBER
I went in and changed the catalytic converter with no help also. To give a little more information. After the car had been sitting all day, it started with no hesitation. It still had a bad miss, but it started and moved under it's own power. I noticed after about 10 minutes once the motor had warmed up that the miss got really bad and the car eventually stalled. It would only restart if I held the gas pedal to the floor and the miss and backfiring was terrible. Could this be a bad O2 sensor or something else?
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Tuesday, June 27th, 2006 AT 10:14 AM
Tiny
DAVID SATTERLEY
  • MEMBER
Have also replaced the 02 sensor and the ignition coils and cleaned the injectors with no help. Could this be a timning issue?
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Wednesday, June 28th, 2006 AT 12:23 PM
Tiny
DON HIBNER
  • MEMBER
I am having an almost identical problem with my 99 4 cyl. Grand am. It runs great for about 10 minutes, then crapola. Feel like it's running on 3 cylinders. Started as small hesitation at highway speeds under acceleration and got bad in about 3 weeks. Now always runs poorly. I replaced the fuel pressure regulator with no help for starters. Am still working at it and will let you know if I get mine fixed before you.
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Tuesday, December 26th, 2006 AT 3:48 PM
Tiny
SERVICE WRITER
  • EXPERT
I have found that very often the coil housing is the most likely culprit, also replace the plug boots at the same time.
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Tuesday, December 26th, 2006 AT 6:31 PM
Tiny
CONDUCTORJEFFW
  • MEMBER
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Monday, April 16th, 2007 AT 8:43 PM
Tiny
CONDUCTORJEFFW
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Monday, April 16th, 2007 AT 8:46 PM
Tiny
REPOMANSAINTS
  • MEMBER
I have a 95 2.3 quad 4 also, I had a big knock, I changed the head, the timing chain and sprockets, then checked out the rod bearings, found those were bad, after the gm dealer had told me it was a bad valve. But I had a 93 toyota pick up 22R-E, it had the similar problem that u are having, I found that it was a head gasket problem, I replaced the head and gasket on the toyota engine, runs like a champ now
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Thursday, April 26th, 2007 AT 12:27 AM

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