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- Joined: Mon May 10, 2010 5:56 pm
- Location: North Central Florida, USA
1)Checked throttle linkage and cleaned it to make sure it wasn't sticking.
2) Adjusted the idle as best as I could (had trouble getting my external tachometer to work due to solid state coil)
3) The thing that really solved my high idle issue and I often neglected was adjusting the Valve clearances (suppose to be adjusted every 15000 miles). Irregular, ticking sound is usually heard in the engine - sorry not sure how else to describe it.
4) also check your vacuum hoses and replace them if they have not been. There is another idle control on the inside of the air cleaner which if the vacuum hose that goes from the carb. to the air cleaner connection is worn or cracked can also cause idle problems. Often this causes surging vs. a high idle but it is worth checking.
I always like to start simple before replacing parts. If you just got the truck and don't know the maintenance history, I would start with replacing the vacuum hoses and then the Valve adjustment plus other normal tune up and maintenance steps. It has helped me remove high idle as well as inconsistent idle in the past.
Hope this helps.
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