Chevy/GMC Small Trucks Forum Discuss the Colorado, Canyon, Sonoma, S-10, etc here!

New Symptom, Ticking When in Drive

Old 05-28-2015, 01:58 PM
Thread Starter
Join Date: Jan 2015
Posts: 11
Default 93 s10 4.3, Ticking When in Drive

I have a 93 chevy s10, 4.3 liter. I flashed the codes and got 35 IAC and 43 ESC. I actually got the codes to clear last month by replacing one of the knock sensors and new IAC valve. I haven't checked the other knock sensor because it's in a hard place to reach. But now both of the codes are back. I know for a fact that I spliced the IAC harness poorly, so I need to solder that connection. Also, now when I turn the car on the engine light flashes really fast a bunch of times until I engage the tranny, then it flashes more slowly and inconsistently. Also, the fuel injectors are dripping pretty badly and there is extended cranking.

Now to the tick. It increases with rpm and only appears when in drive. It is most prominent when the engine is hot. At first I thought it was an exhaust leak because it is more of a puffing sound than a ticking. I once had a dislodged gasket on an exhaust header, and that sound was very similar to this one. However, that time it was audible during idle in park. Now it is only audible when driving and hot. And none of the gaskets are dislodged.

Thoughts? I'm planning on soldering the harness connections, inspecting the hard to reach knock sensor, and possibly replacing the injectors. But I'm learning as I go so I have very little direction.

Last edited by slicedpi; 05-28-2015 at 02:07 PM.
Related Topics
Thread Starter
Last Post
Chevy Silverado/ GMC Sierra Forum
06-29-2009 09:27 PM
Chevy Silverado/ GMC Sierra Forum
02-04-2009 11:11 PM
Ford F-150 Forum
02-27-2008 02:22 AM
Dodge/ Ram 1500 Forum
12-15-2007 08:04 PM
Chevy Silverado/ GMC Sierra Forum
03-04-2007 03:37 AM

Thread Tools
Search this Thread
Quick Reply: New Symptom, Ticking When in Drive

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.