Quote:
Originally Posted by Mt2385
87tdwagen. What do you mean by open up the boxes. I took the plugs apart to make sure all those were still very strong and they seem to be fine. Are you referring to the fuse box?
Another issue I am having is I cannot find this Ovp relay anywhere online. Just one website but it’s back ordered.
|
Read over the posts in the thread I linked earlier for details.
Basically, you want to physically open both the OVP and ELR relays (boxes). Start with the OVP as primary culprit usually. It should consist of a metal cover held to the bottom by some depressed dimples, tangs, where the pins are. Spread the tang, and slide the cover off of the relay assembly. Now you will be able to inspect the innards of the OVP. The Pins that you plug the relay into the harness, are both physically and electrically stressed, over time, they can develop micro fractures on the solder join where these pins attach to the board inside the OVP, leading to flaky electrical issues. If you have a basic soldering iron and skills, try reflowing these connections to the board. Place solder tip on them until the solder liquefies and then remove heat. You can choose to add solder if needed, but generally not really needed. By reheating the solder that is there, it is effectively resoldering itself to both the pin and the board. This will create a solid joint and "should" solve most issues. You can do the same to the ELR if needed, meaning if you did the OVP and still have an issue try the ELR, that cover is plastic and only requires spreading the sides so that it can unclip and slide off revealing the assembly inside. The connections in the ELR are smaller than the OVP so a deft hand and or a fine tip on your soldering iron is required to do those pins.
There are no guarantees, the modules/relays "could" be bad, but from what I have seen and read on these forums, the vast majority or issues stem from poor electrical connections that can often be revitalized via resoldering these pins. There are threads that may have pictures on the how to, OVP resolder that could provide more insight, but once you have the OVP open, I think you'll see what I mean.
There have also been many parts updates made to these over the years, and the superseded parts should work in the event that the OVP is actually (rare) bad. I believe most all OM60x engines used the same, or can use the same OVP. That may open your parts search up a bit.
Good luck,