How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Amedee Your Own Question
Amedee
Amedee, Oldsmobile Technician
Category: Oldsmobile
Satisfied Customers: 25602
Experience:  ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
279429
Type Your Oldsmobile Question Here...
Amedee is online now
A new question is answered every 9 seconds

1998 olds 3.8 start car stall out hold foot on gas un tell

Customer Question

1998 olds 3.8 start car stall out hold foot on gas un tell warm up run fine but when rev up to the 4000cut in and out but dose not stall replaced tps Maf iact upper and lower intake gasket wires plugs car has 88k on it
Submitted: 8 months ago.
Category: Oldsmobile
Expert:  Amedee replied 8 months ago.

Hello and welcome!

My name is ***** ***** I can assist you with your question.

Expert:  Amedee replied 8 months ago.

If at any point during this conversation you would like to speak on the phone, feel free to request a phone call on your end and I will call you right away. Or simply let me know and I can get the process going.

Expert:  Amedee replied 8 months ago.

Is the check engine light on? Are there any codes in the computer?

Customer: replied 8 months ago.
No
Customer: replied 8 months ago.
Change temp sensor t,o
Expert:  Amedee replied 8 months ago.

Have you checked the fuel pressure?

Customer: replied 8 months ago.
Do not have huge to come it
Customer: replied 8 months ago.
Ck at fuel real it got pressuer
Expert:  Amedee replied 8 months ago.

How much?

Customer: replied 8 months ago.
I do not have a fuel pressuer gage
Expert:  Amedee replied 8 months ago.

Ok, the reason I ask is because you could have low fuel pressure due to a weak fuel pump. This is very common.

Another possible cause would be a leaky fuel pressure regulator.

Expert:  Amedee replied 8 months ago.

Have you checked the fuel pressure regulator?

Customer: replied 8 months ago.
I could the reg it look ok no gas up there but how come when the car warm up it runs fine
Expert:  Amedee replied 8 months ago.

It could be a lack of fuel. The engine needs more fuel when cold therefore runs better as the engine warms up.

Customer: replied 8 months ago.
Ok I'll come it and get back
Expert:  Amedee replied 8 months ago.

Sounds good!

Customer: replied 8 months ago.
Ill ck it and get back to you
Expert:  Amedee replied 8 months ago.

ok

Customer: replied 7 months ago.
Replaced fuel pump car still running the same
Expert:  Amedee replied 7 months ago.

I think we should speak over the phone

Customer: replied 7 months ago.
I can't talk over the phone do not have money on card
Customer: replied 7 months ago.
I start the car it. Stalls or go up and down I replace every thing I can think of it runs get when it runs
Expert:  Amedee replied 7 months ago.

Ok so did you ever check the fuel pressure?

Customer: replied 7 months ago.
Puta new fuel pump in
Customer: replied 7 months ago.
When rev it up to 4K rpm it cut in and out
Customer: replied 7 months ago.
It rev up and down like bad I act put new one in the same thing happen
Expert:  Amedee replied 7 months ago.

Hello! It looks like your payment did not go through.

Customer: replied 7 months ago.
Ok
Expert:  Amedee replied 7 months ago.

If your fuel pressure checks out good, then I would suspect a bad mass air flow sensor/MAP sensor. Another possible cause would be a plugged exhaust or even something with the promary ignition system. For example, crank sensor, harmonic balancer or ignition module.

Customer: replied 7 months ago.
I was think the same thing I can drive car it has power
Expert:  Amedee replied 7 months ago.

Right, it has power up to that 4 k rpm right? Are you sure it is not a rev limiter?

Customer: replied 7 months ago.
I may be when I driver it dose not happen
Expert:  Amedee replied 7 months ago.

That might just be what is going on. :)

Expert:  Amedee replied 7 months ago.

I am glad I can help!

It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "5 STAR SERVICE" for assisting you today.

Please let me know if you have any further questions.

Customer: replied 7 months ago.
If it was igntion would it back firer
Expert:  Amedee replied 7 months ago.

It could.. yes depending on how it goes bad.

Customer: replied 7 months ago.
It was the t body a month ago i said it was it was it could not get to the junk yard to get the part i am piss about that i work on cars for 35 years my self put fuel pump in that did not need