1994 Toyota 4Runner Q&A
1994 Toyota 4Runner Question: idle too high
car idle too high on park. There's a code 52 (knock sensor) for check engine. It has a hard time going when you press on the accelerator. We have changed the spark plugs and the wires. What's the problem and how much will it cost to repair. can't smog 'cuz idles too high - lorebelle7
The knock sensor is under the intake manifold and difficult to get at. I have seen the sensor fail but the short wiring harness to the sensor gets brittle and fails definitely replace that anyway. The idle speed could be caused by a vacuum leak or any of a number of reasons. I've seen the accelerator cable get routed wrong and cause a high idle. - patrick mannion
I am having my head gasket replaced, along with machined head, timing chain guides, and all necessary gaskets replaced on my 4runner. What is a fair price to have to pay for a job like this? I feel...