xb1230
Hobby Mechanic
- Joined
- Aug 22, 2014
- Posts
- 960
- Reaction score
- 226
- Location
- South Shore of Montreal, QC, Canada
- Ram Year
- 2020
- Engine
- 5.7 HEMI
OK so I have looked around googleing the thing and can't find a clean and crisp explanation of what I am looking for.
Should the butterfly in the throttle body be tightly closed when at idle?
If I remove the throttle body and hold a light behind it I can see a tiny shine at both the top and bottom. A few thousands of an inch maybe at most. I was under the impression that the butterfly should be tight shut and that the IAC would take care of the rest.
While I was doing some maintenance on the truck last weekend, I noticed there was a lot of corrosion on the TB adjustment screw. So I took a gentle scuff pad and cleaned up everything. However I still see some light in there and just want to make sure it is expected or do I need to fiddle around with the screw until everything comes to a tight seal allowing the IAc to take care of the idle on its own.
There was about 1/8" of carbon deposits on the IAC and its seat in the TB, which I have gently cleaned out. The truck still runs fine but has the rough idle it has had ever since I bought it a few months ago. I have to hook up my OBDII tool to get a reading on the TPS which I guess would give me my answer right?
Am I making any sense here or just confused and confusing...
Should the butterfly in the throttle body be tightly closed when at idle?
If I remove the throttle body and hold a light behind it I can see a tiny shine at both the top and bottom. A few thousands of an inch maybe at most. I was under the impression that the butterfly should be tight shut and that the IAC would take care of the rest.
While I was doing some maintenance on the truck last weekend, I noticed there was a lot of corrosion on the TB adjustment screw. So I took a gentle scuff pad and cleaned up everything. However I still see some light in there and just want to make sure it is expected or do I need to fiddle around with the screw until everything comes to a tight seal allowing the IAc to take care of the idle on its own.
There was about 1/8" of carbon deposits on the IAC and its seat in the TB, which I have gently cleaned out. The truck still runs fine but has the rough idle it has had ever since I bought it a few months ago. I have to hook up my OBDII tool to get a reading on the TPS which I guess would give me my answer right?
Am I making any sense here or just confused and confusing...
