high idle - repair thoughts
03-02-2009, 03:14 PM
#1
Three Wheelin'
Thread Starter
high idle - repair thoughts
My 87NA has been idleing around 2300 once warmed up, and I know the classic "first check" is the IAC. The question is, should I just order the hoses to/from the IAC and put them in regardless? I don't want to start opening things up and then be in a position of "without needed parts". I will also be putting in a new radiator and expansion tank over spring break. Thoughts of members are appreciated.
Jeff
Jeff
03-02-2009, 05:30 PM
#3
Three Wheelin'
Thread Starter
Throttle linkage/cable appears ok, not sure how many/which vacuum lines to check. PET diagrams aren't necessarily the most helpful for placement. TPS has been replaced in the past.
03-02-2009, 07:06 PM
#5
Three Wheelin'
Thread Starter
How does one adjust the TPS? I didn't see anything in clark's garage on adjustment. Also, which vacuum lines are most likely culprits to check?
03-02-2009, 07:16 PM
#6
Addict
Rennlist Member
Rennlist Member
I hate to say it, but all of them, particularly if they are original. On the TPS, do you hear a tiny click as the TB is fully closed?
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03-03-2009, 09:01 AM
#8
For vacuum lines, grab a flathead screwdriver, open the hood, and tighten any clamps on the ends of rubber hoses you can find. I did it as maintenance, fixed my idle from 1200 to 600, and the car performed much better than previously.
03-03-2009, 09:47 AM
#9
Racer
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03-03-2009, 09:50 AM
#10
Racer
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03-03-2009, 02:54 PM
#11
Race Car
BTW, I should clarify. If you close the idle screw all the way and the engine still runs, you got a vacuum leak. Get a can of carburetor cleaner with a straw and shoot it around suspected leaks. If the engine rpm goes up, thats where your vacuum leak is.
