unsteady idle 3vze auto
#1
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Location: Albuquerque, New Mexico
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unsteady idle 3vze auto
When im in park or neutral my idle will jump iradicly from around 700rpm to 1500 rpm and sometimes up to 2k rpm. And its quick, its like it revs to 1500 and then quickly drops back down to 700 and then shoots right back up again. As soon as i shift into drive or reverse the idle stays steady at around 1k RPM. If im driving around and start to coast (im not on the gas and the engine isn't pulling the truck) the idle jumps up and down again. No idea what it could be. Any helpful thoughts??
1988 4runner
3vze
automatic transmission
1988 4runner
3vze
automatic transmission
#3
Registered User
I know that I had this problem on my Honda. Ended up being a vacuum leak. Check all your vacuum lines. Ive also heard that if you have any air in your cooling system this could mess with your idle
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