1990 PONTIAC TRANS AM

  • Tiny
  • jpredix
  • 1990 Pontiac Trans Am

Engine Performance problem
1990 Pontiac Trans Am V8 Two Wheel Drive

push on throttle and lose power

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Wednesday, February 24th, 2010 AT 5:07 PM

10 Replies

  • Tiny
  • rasmataz
  • Member

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.

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Wednesday, February 24th, 2010 AT 5:14 PM
  • Tiny
  • jpredix
  • Member

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

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Thursday, March 11th, 2010 AT 7:01 PM
  • Tiny
  • rasmataz
  • Member

Best start by checking fuel pressure if its within specs -

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Thursday, March 11th, 2010 AT 9:07 PM
  • Tiny
  • jpredix
  • Member

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

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Friday, March 12th, 2010 AT 7:26 AM
  • Tiny
  • rasmataz
  • Member

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

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Friday, March 12th, 2010 AT 2:25 PM
  • Tiny
  • jpredix
  • Member

45 idle 48 2k

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Friday, March 12th, 2010 AT 2:34 PM
  • Tiny
  • rasmataz
  • Member

Did they check the knock sensor could be retarding ignition timing

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Friday, March 12th, 2010 AT 2:51 PM
  • Tiny
  • jpredix
  • Member

Would a code show up if thats the case

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Friday, March 12th, 2010 AT 3:12 PM
  • Tiny
  • rasmataz
  • Member

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

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Friday, March 12th, 2010 AT 3:39 PM
  • Tiny
  • jpredix
  • Member

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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Friday, March 12th, 2010 AT 3:57 PM

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