Throttle linkage on '85?
Thread Starter
Instructor
Joined: Nov 2000
Posts: 140
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From: Grand Rapids MI
Throttle linkage on '85?
I posted this as high idle problem, but I have now isolated the problem to be in the throttle linkage. It is as follows:
With the engine off, tested the linkage by hand and found all to be fine. Connector would return to the screw/stop.
With the engine off, tested the linkage by pressing the accelerator repeatedly (20 to 50 times). Connector would return to the screw/stop.
With the engine on, at 700-750 rpms, rev the engine a few times (2-5) up to 2000-2500, all is NOT well. Linkage returns short of the screw/stop by about 1/16 to 1/8 of an inch. This leaves me with an idle speed of 1200-1300 rpms. Has anyone experienced this and how can it be fixed?
I'm perplexed as to why it will only do it while the engine is on.
The spring on the linkage side of the throttle body seems fine, as well as the spring on the other side where the TPS is located.
[Modified by grsteve, 7:40 PM 4/28/2002]
With the engine off, tested the linkage by hand and found all to be fine. Connector would return to the screw/stop.
With the engine off, tested the linkage by pressing the accelerator repeatedly (20 to 50 times). Connector would return to the screw/stop.
With the engine on, at 700-750 rpms, rev the engine a few times (2-5) up to 2000-2500, all is NOT well. Linkage returns short of the screw/stop by about 1/16 to 1/8 of an inch. This leaves me with an idle speed of 1200-1300 rpms. Has anyone experienced this and how can it be fixed?
I'm perplexed as to why it will only do it while the engine is on.
The spring on the linkage side of the throttle body seems fine, as well as the spring on the other side where the TPS is located.
[Modified by grsteve, 7:40 PM 4/28/2002]
Thread Starter
Instructor
Joined: Nov 2000
Posts: 140
Likes: 0
From: Grand Rapids MI
Re: Throttle linkage on '85? (MrNuke)
More battle tonite, same result. This throttle body was 'reconditioned' and I ground down the screw they used for the shaft on the TPS side of the TB. I thought that might be the hangup. Not.
It must be that the shaft itself, while the engine is running, is too tight and it gets hungup, causing the high idle.
TPS voltage is betweet .54 and .56, I double checked it.
I tried spraying some wd-40 in the shaft area, we'll see if that does anything.
It must be that the shaft itself, while the engine is running, is too tight and it gets hungup, causing the high idle.
TPS voltage is betweet .54 and .56, I double checked it.
I tried spraying some wd-40 in the shaft area, we'll see if that does anything.
