1996 Toyota Tacoma Q&A
1996 Toyota Tacoma Question: high idle
When coming to a stop, the idle dosn't drop to normal till I tap the throttle. could the pvc valve have anything to do with it. - Visitor
PCV valve could give a vacuum leak which would cause a raised idle but there would be a "lean condition" code (Check Engine Light would be on/will come on). Check for a frayed or sticking acceleration cable, Check for a low coolant level it could cause a surging idle, after that the idle control needs to be checked. - patrick mannion
Cleaned throttle body,replace throttle position sensor,replace iac,and still does the same problem idles constant at 2000rpm. dtc p0120 still pops on after driving.
The idle air control motors tend to become carboned up at around 100,000 miles and will cause a start and stall and/or stalling at stop sign problems. Many times these valves can be cleaned, howeve...
A rough idle and even an emissions inspection failure for high HC and CO can be caused by improperly adjusted valves. Also, exhaust valves may become to tight which can lead to valve failures. Ou...