'88 62 won't stay running

[Pacer]

Did the relay solve this?

OK think I have made a little headway. It took for ever to figure out the CIRCUIT OPENING RELAY is a FUEL PUMP RELAY. Why is the that not made more obvious in the FSM. I can understand how valuable the FSM is for testing but why doesn't it tell you the location of a item. From the diagram the Circuit opening relay looks like it is in right behind the valve cover on the engine side of the firewall. I read and searched the forums to figure out fuel pump relay and its location. The FSM was great for testing the relay once I found it. It was bad, found a replacement will try it tomorrow. Thanks

 

[j2dunning]

ay updates?

I'm assuming from lack of recent posts that this has fixed the problem. Anyone know if this relay would keep the truck from running all together?

 

[AndrewOK]

I'm assuming from lack of recent posts that this has fixed the problem. Anyone know if this relay would keep the truck from running all together?

Hey J2dunning. The answer is absolutely YES. A bad circuit opening relay (known to the rest of the PLANET as a fuel-pump relay) will absolutely, certainly, definitely keep the truck from running. My symptoms were: strong start, then the engine would IMMEDIATELY die.

I know it's been almost a year since your post, but I just HAPPEN to be looking at this exact same subject, and this is a pretty useful thread in my opinion.

 

[bluemax009]

I know it's been a year or so on this but first time I've seen this thread. I was having the same problems, symptoms and issues. In my case it ended up being the idle control solenoid coupled with a vacuum leak in the manifolds. I thought it was fuel, then moved to electrical only to realize it was none of this. Following a recommendation from a guy on this forum I sprayed a bit of carb cleaner around where I thought I heard a sucking noise and the engine revved to about 4000 rpm. That told me I had a heavy vacuum leak. When I took the carb off to get at the manifolds that when I realized that one of the wires to my ICS was completely severed. These two issues completely explain the stalling at low rpms and at stops after running long distances. As the engine would heat up after driving expansion would obviously happen creating more of a vacuum issue than I had at cold start. Anyone that my now be having these issues might wanna start there.