The problem I have been experiencing with my 1991 geo storm gsi, is everytime I'm at a red-light or stop sign with the car at a complete stop, my idle will shoot up from the normal 800-900 rpms, to 2,000-3,000 rpms. This is very dangerous on a automatic transmission equipped storm, since you have to firmly press on the brake pedal very hard to prevent the car from lurking forward and hitting a car in front of you, or injuring or even killing a walking pedestrian that happens to be crossing the street. It is also a hazard for manual transmission cars because engaging the engine at 2,000-3,000 RPM will result in violent forward motion. Example: you are pulled up to a stoplight and your foot accidentally slips off the clutch pedal. If your car is idling correctly at 800 RPM, the car moves a foot forward and the engine dies, but if the vehicle is idiling at 2,000-3,000 rpms, the vehicle will lauch forward like a rocket. Scenario two, the engine is hovering at 2,000 RPM, uncontrollably, and your foot slips off the clutch pedal. Your car bolts forward running over the pedestrian who happened to be crossing in the crosswalk. This is a problem that many geo storm owners have, but have had no luck in trying to solve the problem with general motors. The problem, from what a specialized mechanic told me, could be the ECM otherwise known as the "engine control module" which is the engine computer. Any help is greatly appreciated, as we very much need it at this time for our safety, and the safety of others. Thanks, eduardo zaballa. *ak( dot number: tire size: p205/50/15 )
1991 Geo Storm acceleration complaints
Page 2 of 2: complaints 11 to 15 of 15, newest first, as owners wrote them.
At an idle, in park or in gear, the engine speed often rises from normal (1000rpm) up to as high as 4000 rpms. This happens at a stand still and also when approaching, sitting at or leaving stopp lights also. This problem has caused unwanted and unsafe "lurcheing" forward when letting out the clutch. At times, when the engine speed comes back down, it will drop too far and cause the engine to stall. This happened to me in the middle of a busy inter section and I was nearly rearended. To my knowledge gm is aware of this problem but refuses to take care of it outside normal warranty period.
The idle is very erratic. Not too sure if it's the carburator or not, but the idle will jump from 950-1000 RPM up to 2000. This is veryodd and have heard others complain about the same problem. Thank you.
Sporadic idle and high idle forces driver to keep foot firmly on brake to keep car from lurching and going to fast. Computer related problem. Could cause injury or death to a pedistrian. Needs to be corrected.
Criuse control was engaged, when tried to disengage will not, went into open throttle position, to stop vehicle applied the brakes real hard and released.
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