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SO was the green wire replaced? if so did you replace it with a Bosch part?
if not thats the first place to start.
NOTE these early cars take a different fuel pump relay than the later cars,
and simply jumpering them is not the same as having a good FP relay in the socket.
NOTE you also need to have a good fuel injection relay , in essence these relays both work together.
Order both of these relays and replace one at a time and test to see if the engine will run .
Replace the green wire first with a Bosch part the,
URO version has a poorly molded socket that plugs into the distributor and has caused many unstarts
I just had the same happen on my Euro CIS 928S. It is part number 92860290700 for the green wire and have ordered the Bosch version. Also have the fuel pump relay on route to me, part number 92861511303.
Update: had time to start going through the grounds on the car. Started in the rear and cleaned and detoxed the ground wire to battery. It was done a year ago and was surprised at the corrosion. when I got to the positive terminal found it was not tight and the positive wire coming into the terminal was a bit loose. Removed the terminal and the red wire and cleaned both. When I tried to start the car it fired up much quicker than it had been doing when it did fire. There have been two occasions when it did not fire, but on other occasions when it would fire and start there would be a second or two delay. Here's hoping this was the problem. david
Hopefully the end of the story: car did well for a couple of weeks would start every time but only after the starter was turning over 2-3 seconds . Finally last week I was on my 25 mile commute home after work and I am doing around 60 mph and suddenly no power. Car was running normal before that. I pulled over on the side of the road and waited 2 hours for a AAA wrecker. After an hour tried to start the car and it fired up. Drove about two miles and acted as if it was running out of gas and quit. Got home via the wrecker. which also looked to be on its last leg, started my car up and drove it into my carport. Had noted that when trying to start the car on the side of the road the 1st hour could not hear the fuel pump whining. So I had a fuel pump in my "throw parts at it bin" and installed it last weekend. the
Bosch part did not include new crush washers so sanded the old ones down and installed them. Pump leaked. Ordered some new washers and installed the pump with the new washers and no leak and car runs fine. Still have the new Bosch green wire in the bin and will install it after the next wrecker trip. Now on to getting my AC working in the 86 928.
:^) david
Car continued occasional no restart issue when warm. Replaced the green wire. hope this does it. Running well now. but It has only been a day ;^). david
Now third month of this. On way to Church this morning and car was running fine and just quit about four miles from home. Just like you cut the ignition off. any other ideas. Problem is it cuts off when I am away from home and without tools. have checked grounds, replaced fuel pump, green wire. when she is running it runs great. Wife has had enough ;^). any more ideas. waiting on a tow in auburn , al HELP> david
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I would say you have a bad connection in your CE panel possibly one of the connectors along the bottom of the panel ,
or the fuel pump fuse wire connections on the back of the CE panel ,
or a bad ground at the cam tower or the engine wire harness at the firewall.
to figure this out get the system up running and heat soaked,
then with the engine running move the assorted harnesses around see if the engine cut out,
also do this at the engine computer makes sure the engine computer connector has deoxit 100 on it
I would say you have a bad connection in your CE panel possibly one of the connectors along the bottom of the panel ,
or the fuel pump fuse wire connections on the back of the CE panel ,
or a bad ground at the cam tower or the engine wire harness at the firewall.
to figure this out get the system up running and heat soaked,
then with the engine running move the assorted harnesses around see if the engine cut out,
also do this at the engine computer makes sure the engine computer connector has Deoxit 100 on it
Spoke with David this morning. At my suggestion he swapped in another fuel pump relay a couple of weeks ago.
The car started and ran for about 100 miles before returning to previous stall and no restart.
I asked him to listen for the fuel pump while cranking and the fuel pump was silent.
I suggested he make a fuel pump relay jumper to rule out the fuel pump. This is a new pump from Roger so I doubt that is the problem.
For the uniformed what triggers the fuel pump in the 1980?
He has already replaced the green wire, sourced from Roger.
More information: As of now the car will start and run for 5 min and die. Maybe that's a clue.
Last edited by Kevin in Atlanta; 06-15-2024 at 02:09 PM.
03-21-2024, 07:34 PM
