Question about 1999 Saturn SC
Car revs very high & has no power it is also draining power from the battery
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: rev limiter
You'd probably have to get a reprogrammed or chipped engine computer. Removing the rev limiter though is a sure fire way to destroy your engine. Even Ferraris and Porches have rev limiters.
Posted on Jun 01, 2009
reset the trans adaptives in the computer,,,it is a learning computer and has developed "bad habits"from the last valve body...its still trying to correct issues it tried to compensate from the last valve body. It takes a scanner that has capabilities to perform this step in the TC side of the PCM
Posted on Jun 23, 2009
Put the car in the darkest environment you can and with the engine at idle, look around the high voltage leads; plug wires, etc.
I replaced my lousy leads after about 2 years.
If you have a multimeter, you may be able to isolate one or more bad leads by measuring their resistance. It should be ~7-10Kohms, mine were nearly open (infinite) on two.
Posted on Sep 02, 2010
SOURCE: My 1998 manual SL2 Saturn
Saturns need to have the Engine Temperature Control sensor replaced every 30,000 miles, the original ones have a plastic tip that easily break, causing incorrect temp readings. This is a critical component to the engine management system, so replace it, only about $10. In addition, because of your symptoms, replace the thermostat and get a Stant, it is OEM, so not get a cheepo unit. You need to have the engine scanned for the check engine light, and get the actual code for more help-the reason it runs cooler with the air on is it forces the engine fans to run, but that does not fix the problem and if you overheat that engine, you will end up having to replace either the engine or the car.
Posted on May 24, 2011
Stuck throttle linkage or bad throttle position sensor. Also possible is an air leak on the Intake manifold. What happens is that you allow a certain amount of air to come into the engine when the throttle cable is pressed. But if you have an air leak, additional air is coming in the engine and it is like you have the throttle opened further.
You should have the engine shut off and then look at the throttle cables and work the controls. They should operate easily and shut smoothly. If they do not work smoothly there is a problem.
You also can check the gaskets on the intake manifold by using an old spray bottle and mist water onto the seams of the top of the engine while it runs. If the RPM changes or the engine dies, you have found a gasket to fix or tighten.
The engine should not idle so fast as to cause you to ride the brake hard to stop the vehicle. Autozone, Advance, or Oreilys autoparts will scan your car for free. Sometimes they are reluctant if the "Check" light is not on, but revving up may spur them to help you.
Posted on Feb 05, 2012
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