Question about 1998 Saturn SL

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Car runs fine at first, after it is warmed up and running for about 10-15 minutes car sputters at a full stop when brakes are applied feels like the car is going to turn off, but hasn't yet. No check engine light on,and when the car was scanned no codes came up. 1998 saturn sl1

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  • jeff5may32 Nov 29, 2014

    change ects and pcv valve. get the brass nose 2 wire ects and the fixed orifice pcv valve. look on saturnfans dot com for instructions.

  • jeff5may32 Nov 29, 2014

    part numbers are in that site also. these cars have serious blowby when they get old, causing oil consumption and allanner of related mayhem.

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Could be a vacuum leak that is only apparent when the car is up to temperature. Or a sensor (O2, MAP/MAF etc.) that is only used after the engine control system goes into closed loop mode. Or a defective temperature sensor that makes the ECU believe the engine is still cold, and so supplies the wrong air/fuel ratio.

Good luck

Posted on Nov 26, 2014

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Is there a slow idle adjustment? Most newer vehicles have no idle adjustment (computer controlled) but this one is old enough that it just might. Good luck!

Posted on Nov 26, 2014

  • Brandi hadjis Nov 27, 2014

    The idle is low but when the ac unit is turned on the idle goes back up to normal and the car runs fine. When ac is turned off car idle drops and then starts to putter at stops again

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6ya6ya
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SOURCE: 94 buick park ave starts runs for about one minute then dies

be sure the cig lighter is working, if it does not work the scanner will not work and be sure the C.E.L. works. if not check the bulb

Posted on Apr 06, 2009

  • 6982 Answers

SOURCE: 2000 lincoln ls cracked head???

Previous to 2000 Ford had a cylinder head gasket problem with some of the v6 engines failing at two cylinders at opposite corners of engine (don't know what engineyou have) They supposedly corrected that, but I'm not sure how well the correction worked. I doubt if the cylinder head is cracked but if some amount of compression is getting into cooling system it's possible that it may give you strange sensor readings. When testing, it's also possible that some air escaped and returned everything to "normal" ('till it builds up again).
At this point, I would get a second opinion on this. As well as a comprehensive computer scan, have someone do a radiator hydrocarbon test...that will reveal any compression in cooling system from gasket or any other source. (Don't mention that it was checked before, just say what originally happened so objective testing will be done.)

Posted on Apr 22, 2009

emissionwiz
  • 75066 Answers

SOURCE: PCM code P0404

P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance
I suspect the EGR got stuck closed, u will need to put around 30 miles on the car before the light will return if the problem is still present..

Posted on May 26, 2009

SOURCE: 2006 Tuscon Check Engine light just came on, car running fine

dear friend-filling the tank has nothing to do with the engine light.in order to cancel this light,disconnect the battery and leave for a while.reconnect battery and check light,it should be of,if the same happen again take vehicle to a dealership for a diagnostic report.

Posted on Jul 29, 2009

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