1997 Toyota Corolla faulty acceleration at times

Tiny
MHRH33
  • MEMBER
  • 1997 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 153,190 MILES
My toyota is having faulty acceleration at low speeds most of the time. I have had the fuel pump, fuel filter, and radiator changed. It also seems to stall between between 50mph and 60mph. At this point, I slowly let off the gas, and pump the gas and this seems to help. I have brought it to multiple car repair centers, and they cannot find the problem for about a year now. At first I thought it was the gas not getting to the engine correctly, but I have been told that the fuel is not the problem. I dont understand why it stalls on me and sometimes at stop signs just completely turns off unless I keep it in neutral and hope that it will go when I am at a stop.
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Tuesday, June 22nd, 2010 AT 5:39 PM

2 Replies

Tiny
2CEXPT
  • 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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Tuesday, June 22nd, 2010 AT 5:41 PM
Tiny
MHPAUTOS
  • EXPERT
I would start with a scan to check for any unresolved fault codes, check for vacuum leaks, idle control system and TPI sensor readings on a live data reader, start here.

Mark (mhpautos)
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Tuesday, June 22nd, 2010 AT 5:43 PM

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