Question about 1993 Saturn SL1

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1994 SL1 Code 14 hard cold starts,and revs to about 2500 Rpms onstart then dies.

I have both the low coolant light and temp guage dummy lights on on the dash board,I have replaced both the sensor and sending units two times I have 5 volts at both sensor and sending units pig tails.The temp guage never shows any thing unless I ground it and the guage will spike to hot.The car will rev to about 2500 RPM on cold starts until I have started it several times and will then drop down and idle at about 1250 RPMs.every time I erase the code 12 and 14 it comes back on very soon after I get the car to Idle.The car never over heats and has been flushed and has a new T Stat. When driven a short distance its Idle increases to the 2000 RPM and fluctuates.

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They make a connector for the sender unit and they have to usually be replaced. Watch which way it goes on since they are a little cumbersome plugging back on...I prefer soldering the new connectors on too.

Posted on Dec 05, 2013


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Posted on Jan 02, 2017

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SOURCE: cars engine rpm revs up periodically or shifts erratically

Sounds like you could have a vaccuum leak. you could spray carb cleaner around your lines and see if the engine's rpm increases or starts running like ****. That would be an easy test to indicate leak or not.

Posted on Oct 16, 2008

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SOURCE: 99 saturn sl1 hard to start if sitting for over an hour

you have leaking fuel injectors they are fouling out plugs.

Posted on Apr 22, 2009

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SOURCE: 2000 sl2 is hard to

in order to diagnose problems like this much more info is needed, have you tested the electronic engine controls for trouble codes? (u will need to have the system scanned to find out these codes) if so what are those codes? the next test is to make sure the fuel pressure is not leaking down due to a defective fuel pressure check valve in the electric fuel pump located in the fuel tank, this will cause the engine to run poorly when first started, to test this u will need to buy a fuel pressure test guage tool for your car, the test port to measure pressure is on the top of the engine in the pipe that feeds fuel to the injectors, it looks like a big tire valve with a plastic cap on it, to test for fuel pressure leak down hook up the gauge and run the engine, you should have about 55-60 PSI at idle, make sure the gauge connection doesn't leak, then shut the engine off, the pressure should not drop by more than a few pounds of pressure, if it drops more than 5 PSI then u need to replace the fuel pump.

Posted on Sep 02, 2009

  • 249 Answers

SOURCE: When driving the car starts losing power,

is this vehicle a standard shift? if so the clutch is slipping

Posted on Jan 05, 2010

  • 112 Answers


On your vehicle when the Check engine light comes on and a code is store, the driver can retrieve the codes themselves with the onboard diagnostics. Put the key in the on position and watch for the light.The light will blink in a code .FOR EXAMPLE:
If the light blinks 4 flashes then a pause then 3 flashes then .......yep code 43. Easy enough.
Oh yea, by the way A bad intake manifold gasket would be a constant problem which would cause a vacuum leak. ( That's if it effected engine performance) A vacuum leak would be sensed at the Oxygen sensor as a lean condition. Code 44

Try the codes yourself

Posted on Sep 20, 2010

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95 geo dies while driving but will start back up. Revs fine in neutral but will die again when in gear. changed the temp sensor, map sensor, fuel pump and filter, fuel tank was clean and there was no water...

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Code 13 is usually a problem with the O2 sensor.
I would want to make sure the coolant system is full of liquid and has no air bubbles. Then check the wiring harness from the temp sensor back to the computer.
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