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sounds like avacuum leak to me, there should be a vacuum diagram on the under side of your hood. you need to check every thing in the diagram for leaks. the best way is to use a propane torch you do this by starting the motor the take the torch and open the gas valve ( DO NOT LIGHT THE TORCH then point the torch on all the lines and components if there is a leak any where the engines idle speed will change.
What else can I help you with?
How do you reset how the car idles and where can i find it and at what rpm is it supposed to idle?
My 1990 idles at about 850 and with the ac on 1100
Does the Geo Tracker have air bags?
does 1990 geo tracker have air bags
Where do you buy a fuel pump relay for a 1990 Geo Tracker?
Where can i buy a fuel pump relay for 1990 1.6 geo tracker
Rebuilding manual transmissions for 1990 Geo Tracker?
i want to know how to rebuild a manual transmission for a 1990 Geo Tracker 4x4
What is the firing order for a 1990 Geo Tracker?
Go to Google.com and type in the words "1990 Geo Tracker firing order" and it will get you to a site that will tell you.
Will a fivespeed trans out of a 1990 Geo Tracker fit a 1995 Geo Tracker?
Yes it should.
Where is your IAT sensor on your 1990 Geo Tracker?
The 1990 Geo Tracker IAT sensor is located on the top of the transmission. The IAT sensor will be near the back of the transmission.
What is the firing order for a 1990 Chevy Tracker?
1342
Who manufacturers the engine in a 1990 Geo Tracker?
Suzuki.
First year Chevy Tracker was made?
1990 was the first year of the Geo Tracker. 1999 was the first year of the Chevrolet Tracker. So the answer to your question is 1999.
What are the timing belt alignment specifications for a 1990 Geo Tracker 1.6 engine?
what is the timing specs for a 95 geo tracker
90 Geo Tracker spark plug gap?
0.028 geo tracker 1990, 8 valves 2 doors
