ENGINE PERFORMANCE PROBLEM1990 PONTIAC TRANS AM...

1990 Pontiac Trans Am

Tiny

jpredix

February, 24, 2010 AT 5:07 PM

Engine Performance problem
1990 Pontiac Trans Am V8 Two Wheel Drive

push on throttle and lose power

FOUND 16215 RELATED QUESTIONS

10 Answers

Tiny

rasmataz

February, 24, 2010 AT 5:14 PM

Inspect and test all the following listed below: Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note: If it doesn't apply disregard.

Tiny

jpredix

March, 11, 2010 AT 7:01 PM

You sent me alist of thing that might be wrong with my car and my garage fix everything and it still does it I will explain what it does. Start car drive for 5 miles you go to punch it and feels like its flooding out

Tiny

rasmataz

March, 11, 2010 AT 9:07 PM

Best start by checking fuel pressure if its within specs -

Tiny

jpredix

March, 12, 2010 AT 7:26 AM

I had technician check that and everything checked out. Anything that has to do with fuel has been changed and is brand new. It is a new engine had local motor company put it in I have a lot of money tied up in the car and it still dont. I had several technicians look at it together they have over 100 years experience in this feild and not one could fix it

Tiny

rasmataz

March, 12, 2010 AT 2:25 PM

Before I can continue I need the fuel pressure-both at idle and 2K rpm

Tiny

jpredix

March, 12, 2010 AT 2:34 PM

45 idle 48 2k

Tiny

rasmataz

March, 12, 2010 AT 2:51 PM

Did they check the knock sensor could be retarding ignition timing

Tiny

jpredix

March, 12, 2010 AT 3:12 PM

Would a code show up if thats the case

Tiny

rasmataz

March, 12, 2010 AT 3:39 PM

Its suppose to work that way but at times they'll be a problem within the engine management system that the computer failed to lock-in and pop the CEL. Scan the computer again might give you something

Tiny

jpredix

March, 12, 2010 AT 3:57 PM

Well there was no codes that showed up I will try the knock sensor can I ask you where that is located thanks for everything I just want to get my car running and tired of paying mechcanic and still dont have a running car I hope I can find the problem because im going to take it back and show them I fixed it ha ha ha

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