Question about 1995 Pontiac Grand Prix

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Stalling issues I have a '95 Grand Prix 3.1L Recently it started sputtering when coming to a stop. I replaced the PCV valve and hose as they severely needed to be. That worked for about 3 miles and then the problem started back up. Sometimes it will run for twenty miles without stalling, sometimes it will stall at every stop. Once even on the highway. I have heard it may be a choke problem or could be the fuel filter / pump. I dont have a lot of money and cant afford to try everything. Any help is greatly appreciated.

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Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Feb 13, 2009

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1994 toyota corolla has a runs rough at idle and lacked power, would stall sometimes at stop. Also has low idle,try timming and new plugs, and checked distriburtor cap and fuel filter and fuel regulator


I have a similar problem with one of my Toyota Corollas. It's a 95 model with the 1.8L engine (7A-FE, automatic). But unlike yours, it has plenty of power while running. Here's what it does. Occasionally the engine misses. Sometimes it will die. This is most likely to happen when you start the car and put it in reverse and start rolling without giving the engine time to adjust. I've been told by some customers that it will die sometimes when coming to a stop. But this has never happened when I drive it. I don't think it's a fuel issue because the car runs just fine when it's running.

Here's what I've tried so far:

  1. Replaced spark plugs and wires.
  2. Used gasoline additive fuel injector cleaner.
  3. Checked air filter.
  4. Checked vacuum hoses for leaks.
  5. Replaced PCV valve and hoses.
  6. Cleaned the air intake and throttle body with carburetor cleaner.
So far there is no change in the problem.

What I plan to do next:
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  2. Check the MAF sensor.
  3. Adjust the idle via the set screw.

After that I have no idea what to do next if the problem persists. The check engine light is not on so I don't think there are any error codes. Will let you know.

Frank
Frank's Friendly Cars Maui Car Rental
www.MauiCarRental.biz




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