Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
06 trail blazer 4.2 engine P2138 and P060E
- chris.arriazola
-
Topic Author
- Offline
- Junior Member
-
8 years 8 months ago #11651
by chris.arriazola
06 trail blazer 4.2 engine P2138 and P060E was created by chris.arriazola
Hello everyone having trouble diagnosing the problem. Im looking at tps1 and tps 2 signals but one has lots of drop outs. Also alternator seems to make the test very noisy with lots of hash. Heck where do I start? Also scoped the app sensor and 1 of those also has dropouts even with it unpluged.
Please Log in or Create an account to join the conversation.
- cheryl hartkorn
-
- Offline
- Platinum Member
-
- cheryl hartkorn
-
- Offline
- Platinum Member
-
- Tyler
-
- Offline
- Moderator
-
- Full time HACK since 2012
8 years 8 months ago #11680
by Tyler
Replied by Tyler on topic 06 trail blazer 4.2 engine P2138 and P060E
Not to worry - those dropouts are completely normal. 
It's a circuit integrity strategy use to detect shorts between the two signal circuits on the TPS and APP. Check out this thread on a Buick with an identical concern:
scannerdanner.com/forum/post-your-repair...e-driving.html#10550
Catching this one in the act may be difficult, as it's usually a very quick glitch that produces this code. Before you dig in too deep, definitely take a look at those TSB's Cheryl posted.
It's a circuit integrity strategy use to detect shorts between the two signal circuits on the TPS and APP. Check out this thread on a Buick with an identical concern:scannerdanner.com/forum/post-your-repair...e-driving.html#10550
Catching this one in the act may be difficult, as it's usually a very quick glitch that produces this code. Before you dig in too deep, definitely take a look at those TSB's Cheryl posted.
Please Log in or Create an account to join the conversation.
Time to create page: 0.285 seconds