03-14-2013, 11:51 AM
Join Date: Mar 2013
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Electrical gremlins...I think? (no turn signals, brake lights, ABS flashing...
I am new to diesels and to this forum. This forum has been very helpful already and has helped me solve numerous problems. However, I have 4 problems I cannot seem to solve or find the solution to, so I am making my first post on the forums.
I inherited a 1996 F350 with the 7.3 powerstroke. It had sat for awhile before I had time to mess with it. The engine runs great for having 300k miles on it. The transmission has been rebuilt and has less than 50k on it. There are a few problems I cannot seem to fix. These problems may or may not be related to each other.
I have no turn signals or break lights but the wiper control and dimmer switch for the headlights on the same switch do work. I have checked all fuses, and checked the wires coming off the break pedal switch. All light bulbs are good.
The ABS light is flashing. Brakes work great. I have checked all fuses. When you first start the truck, the ABS light is off. However, after applying the break and put the transmission in gear, the ABS light starts to flash.
Cruise control doesn't function. I believe the cruise won't work unless the ABS is functioning so the ABS issue might be the problem here. The cruise control worked then it was last driven.
This is the one that has me scratching my head. The torque converter lockup isn't working correctly to my understanding. Even with the transmission in overdrive, the converter doesn't lock. However, if I accelerate heavily or climb a hill and put my foot in the throttle some, the converter will lock. Once I let up off the throttle, the converter unlocks again. It seems as if it's doing the reverse of what it should be doing. I have verified the transmission fluid level. The transmission functions just fine other than the converter lockup issue. When the converter does lock up, there is no shutter. The lockup is crisp.
I have researched quite a bit on this forum, but haven't been able to solve these issues. If anyone has had similar problems or can make any helpful suggestions, I would greatly appreciate it. Thanks!