CEL Not Doesn't Flash
Thread Starter
|
Cross-Country
Joined: Oct 2010
Posts: 84
Likes: 1
CEL Not Doesn't Flash
1988 F350 with 351W. Trying to determine why my check engine light is on. When I put jumper wire on EEC connector, the check engine light comes on with the ignition but does not flah any coedes. It just goes off and stays off. Any thoughts?
Thread Starter
|
Cross-Country
Joined: Oct 2010
Posts: 84
Likes: 1
Ok, was able to retrieve codes this morning. Not sure if I was doing anything wrong the other day, but this morning jump wire was used to ground out EEC pigtail to frame. That worked. It surprised me that I didn't need the EEC connector, just the pigtail. Anyway, trying to diagnose a rough running, stall, sputter, white smoke issue. Codes were 22, 31, 51, 53, and 54. I suspected the TPS, and I think code 53 confirms that. Other codes may be related to the truck being de-smogged a few years ago. Thanks for the response!
Fleet Owner
Joined: Aug 2005
Posts: 23,666
Likes: 301
From: Easton,Ks
All of the codes are because the voltage is off for them.
22 = MAP sensor
31 = EGR position sensor
51 = ECT sensor
53 = TP sensor
54 = ACT sensor
None of these codes have anything to do with the "truck being de-smogged".
You might check the supply voltage to all of them.
Also check the EEC Computer power and ground points.
22 = MAP sensor
31 = EGR position sensor
51 = ECT sensor
53 = TP sensor
54 = ACT sensor
None of these codes have anything to do with the "truck being de-smogged".
You might check the supply voltage to all of them.
Also check the EEC Computer power and ground points.
Thread Starter
|
Cross-Country
Joined: Oct 2010
Posts: 84
Likes: 1
No, I was jumping from STI to STO (4) and not applying any power other than what is activated by ignition switch. So I may have been doing wrong. My signal lights are screwy (a problem that existed prior to the current problem and I have suspected a ground issue. Based on subford's post, looks like I need to troubleshoot electrical issues and that may solve many problems.
Thread
Thread Starter
Forum
Replies
Last Post
zemus420
1987 - 1996 F150 & Larger F-Series Trucks
1
Feb 14, 2005 01:20 PM
Rocket53
Explorer, Sport Trac, Mountaineer & Aviator
1
Jun 21, 2004 02:57 PM
