CEL Not Doesn't Flash
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Cross-Country
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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?
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Cross-Country
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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
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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.
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Cross-Country
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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.
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