I have been having issues with the e4od in my '91 since I got it. It wasn't shifting, had the tranny rebuilt, still wouldn't shift. After replacing the FIPL myself it was finally able to shift. However, it will not downshift. I adjusted the FIPL or TPS or whatever you want to call it and that helped with some of the soft or early shifting problems I was having but still no down shift. I pulled out the VSS on the tranny and it looked fine, cleaned it and the connections off. Is there a way for me to test the VSS?
I didn't think this had anything to do with downshifting but the rear ABS light has been on continuously as well. I've read that FIPL, VSS, and 3rd brake light can all affect e4od shifting but I haven't been able to find an article that addresses no downshifting at all. Before I go and replace every sensor in the truck I'd like to know if there is a good to start solving this issue.
Has anybody seen this issue before. Like I said it's a '91 7.3 with duallies, crew cab XLT lariat. Runs great, no downshift. Thank you for any help!
I didn't think this had anything to do with downshifting but the rear ABS light has been on continuously as well. I've read that FIPL, VSS, and 3rd brake light can all affect e4od shifting but I haven't been able to find an article that addresses no downshifting at all. Before I go and replace every sensor in the truck I'd like to know if there is a good to start solving this issue.
Has anybody seen this issue before. Like I said it's a '91 7.3 with duallies, crew cab XLT lariat. Runs great, no downshift. Thank you for any help!