88 1500 5.0 throttle sticking closed

[Greg S Meier]

I'm still having problems after 2 cans of CRC tb cleaner.
Help!

 

[PlayingWithTBI]

I'm still having problems after 2 cans of CRC tb cleaner.
Help!

Did you try screwing in the T25 min idle screw a little? Just keep track of how many turns you make if it doesn't fix the issue, you can always put it back where it was.

 

[Greg S Meier]

Did you try screwing in the T25 min idle screw a little? Just keep track of how many turns you make if it doesn't fix the issue, you can always put it back where it was.

Not yet. Where would I find it? I'll try it today!

 

[PlayingWithTBI]

Where would I find it? I'll try it today!

The red arrow is pointing to it (on the front right as you look at it). You'll probably have a cover on it that you'll need to remove. As you can see this one has been chipped out previously. The screw is a hard stop for the throttle so it won't close all the way, hopefully.

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[Greg S Meier]

The red arrow is pointing to it (on the front right as you look at it). You'll probably have a cover on it that you'll need to remove. As you can see this one has been chipped out previously. The screw is a hard stop for the throttle so it won't close all the way, hopefully.

You must be registered for see images attach

I'll try it now!

 

[Greg S Meier]

It only sticks when it running.
Doesn't do it if it's not

 

[PlayingWithTBI]

It only sticks when it running.
Doesn't do it if it's not

Yes, I saw that in your 1st post, that's why I'm thinking the throttle shaft bushing is worn and the vacuum from the running engine is jamming the blades against the bore so, if that's the case, you can either repair it or adjust the idle screw to keep it from bottoming out.

 

[Greg S Meier]

Yes, I saw that in your 1st post, that's why I'm thinking the throttle shaft bushing is worn and the vacuum from the running engine is jamming the blades against the bore so, if that's the case, you can either repair it or adjust the idle screw to keep it from bottoming out.

 

[Greg S Meier]

Ok.
I did adjust the idle screw.
Not much difference.
Thank you very much!

 

[PlayingWithTBI]

Not much difference.

Did it help at all? If it did, try screwing some more? If not, time to get another TB or get this one repaired.