Have code 34 and 42. Runs good with ESC disconnected. High idle.
Thursday, January 24th, 2019 AT 1:25 PM
10 Replies
DANNY L
MECHANIC
5,648 POSTS
Hello, I'm Danny.
Sounds like you might be having a problem in the E.S.T or ignition module. I've attached two pictures below as a diagnostic aide. Here is a tutorial on how to test wiring:
Hope this helps and thanks for using 2CarPros.
Danny-
Images (Click to make bigger)
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, January 25th, 2019 AT 12:10 AM
KEN L
MASTER CERTIFIED MECHANIC
48,363 POSTS
Hello,
I found the wiring diagrams so you so use the guide above. I have seen the ECM go bad causing the this issue. FYI.
Images (Click to make bigger)
Was this
answer
helpful?
Yes
No
Friday, January 25th, 2019 AT 2:16 PM
LIONFAN
MEMBER
6 POSTS
Thank you.
Was this
answer
helpful?
Yes
No
Saturday, January 26th, 2019 AT 7:20 AM
KEN L
MASTER CERTIFIED MECHANIC
48,363 POSTS
Please let us know what you find. We are interested to see what it is.
Was this
answer
helpful?
Yes
No
Monday, January 28th, 2019 AT 7:28 PM
LIONFAN
MEMBER
6 POSTS
Truck now has uncontrollable spark knock.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, January 28th, 2019 AT 7:42 PM
LIONFAN
MEMBER
6 POSTS
Truck now has uncontrollable spark knock
Was this
answer
helpful?
Yes
No
Monday, January 28th, 2019 AT 7:43 PM
KEN L
MASTER CERTIFIED MECHANIC
48,363 POSTS
What did you do for repairs? Did you swap out the ECM?
Was this
answer
helpful?
Yes
No
Tuesday, January 29th, 2019 AT 11:38 AM
LIONFAN
MEMBER
6 POSTS
Checked all the basics; vacuum lines, wiring, new pugs, cap, rotor and wires. Check timing. Had the truck eleven years was going to give it to son in law before it lost its mind. Do not like spending money to give it away. Just want to get the right part not all of them!
Was this
answer
helpful?
Yes
No
Tuesday, January 29th, 2019 AT 1:36 PM
KEN L
MASTER CERTIFIED MECHANIC
48,363 POSTS
No problem send the ECM out to a rebuilder and have them check it.