Recent content by 94Bobby

9
1994 5.7 350 Twitchy RPMs when stopped

Small little update I cleaned both the MAP sensor and IAC valve. The IAC valve did have some carbon deposits as did the passage it goes into. I cleaned it out throughly, but the problem still occurs. Next thing on my list is doing all check of fuel and a vacuum leak. Will continue to update.
- 94Bobby
- Post #7
- Dec 21, 2023
- Forum: Engine Performance + Maintenance
9
1994 5.7 350 Twitchy RPMs when stopped

Taking out the IAC to clean/look at it is something I have not done yet. I replaced it when I got the new motor since the mechanic said my old one was trashed, which it was. I have also replaced the CTS that on the top of the motor which goes to the computer, that fixed a starting issue I had. I...
- 94Bobby
- Post #5
- Dec 21, 2023
- Forum: Engine Performance + Maintenance
9
1994 5.7 350 Twitchy RPMs when stopped

Hello Everyone, I have been battling this problem for quite some time now, I have a 1994 Sierra C1500 with a new motor (less than 15,000 miles). I’m having this issue where the RPMs will rev randomly, most of the time it’s quick and not noticeable like in the video, but other times the truck...
- 94Bobby
- Thread
- Dec 20, 2023
- Replies: 10
- Forum: Engine Performance + Maintenance