What is the estimated cost to fix the idle speed control on a Toyota Avalon?
You need to replace the complete throttle assembly since the idle speed controller is not sold separately. I had problems with the ISC and removed the throttle body and cleaned it with a throttle body cleaner spray, it worked fine for some months but then started failing again. Since I had experience with removing the throttle body, I just bought a new one from ebay, it cost me $100 plus shipping. I replaced the throttle body miself, re-used the hoses and gaskets and solved the problem. A new part will cost more then $300 plus labor, for sure they will want to replace gaskets and hoses, so plan for $800 if you take it to the dealer or maybe $500 at a local shop. Oh, I also obtained a copy of the Haynes repair manual just to make sure that I was putting everything in its place. The manual is available on the internet but it's hard to find.
For 98 Avalon air bag light stays on also your cruise control and horn does not work you think the wiring in the steering column must be broken How do you check and replace this wiring?
I just took my Avalon in for the same reason. It is the ABS speed sensor or he also called it the spiral sensor which also involves the horn. If your light stays on the sensor is inoperative and will not deploy the air bag. I am looking to see about getting the cost of this repair lowered with Toyota. This is very UNCOMMON. I never use the horn. I too am looking for alternative…
The Direct Clutch Speed Sensor is on top of the transmission (in front of the driver) and secured by a 12mm bolt to the transmission casing. It looks like a vertical black tube with an arm that extends toward the driver with the bolt at the end. The top of the tube has a black connector plugged onto it with two wires that join a major wiring harness a few inches away.