Question about 1997 Pontiac Grand Prix

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Seems like its starving for fuel, pump has been replaced. My check engine light is on. Had it checked by mechanic. Replaced fuel pump and MAF sensor. Engine also gets hot and coolant backshots after long trips. Please Help!!!!!

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Id check the headgasket and replace the fuel filter...maybe injector cleaner would help?

Posted on Sep 30, 2008

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ReNissan P0300


a misfire can be mechanical as well as electrical
code p 0300 is random/ multiple misfires detected
low fuel pressure is a probable cause from a problem fuel pressure regulator or problem EVAC system not venting properly causing a vacuum in the tank and starving the pump
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I assume a repair shop can't resolve the issue !

That seems to be why thousands of people come
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I have a2001 corolla with a code p1071.I was told to replace the o2 sensor before the converter.I replaced it and reset the light.The check engine light stayed off for 320 miles.It came on with the same...


This is almost always caused by a failing mass air flow sensor. If you had it replaced with aftermarket you may want to replace with oem to avoild problems. Thanks P0171 Fuel System Too Lean (Bank 1)Possible Causes Setting Conditions Base engine "mechanical" fault affecting one or more cylinders Check for air leaks after the MAF sensor Check for air leaks in the Air Induction system (e.g., in the intake manifold) Check for air leaks in the exhaust manifold and in the exhaust pipes Exhaust leaks located in front of the AFS or HO2S location Fuel control sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery system supplying too little fuel during cruise or idle periods (e.g., faulty fuel pump or dirty, restricted fuel filter) Fuel injector (one or more) dirty or pressure regulator has failed HO2S has failed (it may be contaminated with fuel, silicone or water) Vehicle driven low on fuel or until it ran out of fuel

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Having a problem with my 93 camry v6. car shakes when it is idle, when i accelerate car makes a clunking noise and doesnt accelerate as fast as it used to. also check engine light is on. could it be dirty...


Most likely you need motor mounts for the shaking and clunking.
The check engine light being on could cause the accelerating problem. It could be something as simple as the fuel filter being old and plugged up. Have you ever changed the fuel filter? This could cause the engine to run lean making the check engine light come on. And when accelerating the engine will be "starving" for fuel causing poor acceleration.

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2000 bonneville w/3600 v-6 and 99000 miles never had problems, original owner. stalls sporadically but no codes come up on diagnostic. acts like a loose connection, feels like running out of fuel. NEED...


i had the same problem a few months ago. check your fuel filter. mine was on the car for some time and after replaceing it, car runs great. hope this helps. i would also check your air cleaner. if to dirty will run rich and with a dirty fuel filter your car will stall.

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1 Answer

Replaced map sensor and mass sensor unit, continues to stall


it sounds like it is starved for fuel. you could have a bad fuel pump or your injectors are dirty (add a can of injector cleaner to fuel tank), or your uel gauge sending unit is sticking above empty even though the tank is empty.
Check for @ 40 psi of pressure at the fuel rail. There should be a shrader valve to connect a pressure gauge. If it is low, the pump is in the fuel tank Hvae to drop the tank to replace.

How does it run when cold? If better, a sign of a failing pump.

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1 Answer

1997 Pontian Grand Prix Seems like its starving for fuel, pump has been replaced


try the injectors and email me at meanness628@aim.com with any other info or questions

Sep 28, 2008 | 1997 Pontiac Grand Prix

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