For tha last month or so my 86 has been stalling, usually once or twice in a short trip. this morning it stalled and would not start again, checked with a test light, getting no pulse at injector harness. two minutes later car starts runs a few minutes and stalls. Then the fuel pump relay turned on and off 4 or 5 times, swapped in another one, did same thing.

This all happend three or four times, start, stall, no pulse, funny f/p relay.

Car did the same thing with 2 different coils and 2 different ignition modules, the ohms across the p/u coil is within spec.

I leaning towards the ecm.

Any other opinions out there?

Thanks, John

 

I can tell you that my car did something very similar. I would drive it for a good amount of time and heat it up and then shut it off. If i would go and start it again all hell would break loose. It would die without warning just driving down the road. So my shop told me that the ECM was probably bad cause it was throwing codes like crazy. I replaced it and the PROM and it shifted better and idled better but still would die in the same way. So back to the shop it went. They thought it was the distributor messing up so they put a new one in and then kept it for a few days and test drove it. It continued to do it for them until they replaced the MAF sensor. Then it never died on me again. I guess through all that it could be your ECM or it could be your MAF sensor. Hope that helped somewhat.

 

Thanks, that did help, I put a new MAF in it today it seems to have straightened it out.

 

Fantastic...glad i could help. I wish i knew about this board when my car was acting up so maybe i could have saved all that money. Good luck with your car!

 

Car stalled again today, so I dug a little deeper, found that the f/p relay and the maf power relay were swapped around.

I've read here that some folks say they are interchangable, after what I've been through the last week or so, I would tend to disagree (No offense meant). I'll see what happens the next couple of days.

John

 

Well good luck...i hope swapping those wired back helps. If it doesn't then i would bring it to a shop and have them put a scanner on the computer. It shouldn't cost to much..just make sure to tell them not to do the work on it if they find out whats wrong. Shops are too damn expensive!!