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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: junkman on March 30, 2010, 11:22:52 AM
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I have a 1990 Sidekick that is constantly idling up and down. It runs from 1000 rpm to 2000 rpm constantly. I have been told that it is the throttle positioning sensor. Does that sound like what it is? They are $170.00 and I don't want to buy one if it is not the problem. If this is not it, what else could it be?
Junkman
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I would say that its probably not the TPS if its an idle problem and the TPS is correctly adjusted. have you got a Check Engine Light on? Take a look at this site:
http://www.kick-fix.com (http://www.kick-fix.com)
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Thanks! I'll give it a try.
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I had this problem with my 1990 Tracker. One thing I found mentioned was vacuum leaks. Mine would do it until it was warmed up. I also had a high idle on startup. Both these problems were fixed when I blocked off the air to the wax pellet that controls the high idle.
It's to the passenger side of the tps. A cover with 3 screws, remove the cover and there is a spring loaded valve and the wax pellet is behind that. I have a factory service manual that showed how it looks. I used a piece of rubber hose ---with a small bolt part way through to keep it straight--- to fit over the opening to block off the air. I needs to be about 1" long.
This fixed the idle problem. No more surging and no 3000 rpm on start-up. It won't have a fast idle when cold but I haven't had problems with that since these engines warm up pretty fast.
You can search for "wax pellet" or check out this
http://www.zukiworld.com/forum/general-suzuki-forum/wax-pellethigh-idle-fix/msg93396/#msg93396 (http://www.zukiworld.com/forum/general-suzuki-forum/wax-pellethigh-idle-fix/msg93396/#msg93396)
Hope this helps.
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Hey! Thanks alot! That was exactly what was wrong.
Junkman