96 Pontiac Sunfire, 2

SPACEYSTACEY

MEMBER
1996 PONTIAC SUNFIRE
288,000 MILES

96 Pontiac Sunfire, 2.2ltr, Manuel transmission, 288000kms
OK, from the beginning. Car was running normal with exhaust getting louder (needed new muffler) one day she was lacking power going up hills and on the throttle it self after coasting. I got diagnoses done. No codes until car was revved to 3000rpm (would not go pass 3000rpm)
1. Running rich
2. EGR
I then got new muffler and took off the Cadillac converter and replaced it with straight pipe also changed fuel filter and EGR. Still doing same, next diagnoses
1. Changed EGR
2. Changed plugs, good
3. Compression 140 cross the board
4. Checked fuel injectors and pressure, good
5. Checked all fuel pressure, good
Car is still running rough and like a granny, as soon as u want power it sounds like a misfire, you can push gas pedal down but nothing comes of it until you go granny speed again. Then it kicks in.
HELP we are stumped HeLP pLeAsE

5 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

What is the exact fuel pressure?

Did you get the injectors serviced? Not an additive but a real service.

What are the codes?

Roy

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Thursday, January 24th, 2013 AT 12:02 AM

SPACEYSTACEY

MEMBER
7 POSTS

First diagnoses
1. Engine vacuum only 5-10 lbs
I just phoned in, the guy never wrote down the codes other then, Rich code and EGR code.
I will call again tomorrow when he is in

Second diagnoses
1. 45 lbs injectors
2. Rich code only comes up
3. Fuel regulator working properly
3. Fuel system pressure up to par
He took exhaust off at manifold, no plug in exhaust
That's all I could get this mechanic too say