2000 S80 Stalling

rbrothers · Post by **rbrothers** » 28 Jul 2011, 18:24

I purchased this auto non-running and have finally got it running about a week ago. I changed the crank sensor after numerous other tests and pulled the ecm to reset the system. It ran fine for about 4 days then starting dying periodcially (stopping or turning sharp). Today I was driving and it died just driving along. I had to push to side of road. I pulled the ecm and replaced and let set for about two minutes and put it back in and it started right up. I drove about five miles and had to do the same thing over. Does anyone know what may be causing this? Could the cam sensor be the problem and something else i'm missing? Any help or ideas will be appricated

Post by **dcarlson12** » 28 Jul 2011, 23:32

Are there any DTCs?

rbrothers · Post by **rbrothers** » 29 Jul 2011, 05:14

That's the strange part no codes no warning it just happens for some unknown reason.

Post by **dcarlson12** » 29 Jul 2011, 10:35

Possibly check for loose ground wire somewhere. Sounds like motion of the car is causing something to move and then she dies... so could be something which makes contact until it gets jarred.... I used some Deoxit to clean the connector of the CVVT solenoid and it seems to have fixed that problem. Possibly use that stuff or some other contact cleaner on various connectors but that is just a shot in the dark. If no codes to guide then....

rbrothers · Post by **rbrothers** » 07 Aug 2011, 17:49

I really need suggestions on my 2000 S80 T-6 to make this as short and direct as I possibly can I will list what I have done to date. It has gone from running three to four hours without stalling to stalling about every half mile. The strange thing is that I can pull the ECU and wait about 15 minutes and it will fire right up and today it would run about 10 minutes at a time then die. This evening I got it started and it idled about an hour without dying then I turned it off and restarted 5 or 6 times without problem. I let it set for about an hour and went back out to start and it will just turn over. I have changed the crankshaft sensor and cleaned the ETM. One thing I have noticed is the STC triangle light will come on when it dies and if it restarts back up it will be on, if I turn it off (engine) for 30 seconds and restart it will be off and the off and on switch will work. I have also checked the fuel pressure at the rail and it holds about 50 pounds for 45 minutes. I have read that some have had problems with fuel pump relays. Can anyone tell me where they are located? Could it be the ETM? When it goes into this state it has no pulse at the injector or fire at the plugs. Any help would be greatly appreciated.

rbrothers · Post by **rbrothers** » 14 Aug 2011, 17:07

I have 0 fuel pressure after three weeks of stalling. I am ready to replace fuel pump but want to make sure that’s what it is. The only time the fuel pump works is when you first turn the key on for about 2 seconds then nothing and the pressure is minimal at best. I disconnected the fuel line from the pump and after the initial squirt it has nothing even when turning the engine over. The pressure at the fuel rail is almost nonexistent and is if you bleed the rail. I have the seat out and am ready to order replacement but would like to have advice on what else I should replace in the tank if anything. The car is a 2000 S80 T-6.

rbrothers · Post by **rbrothers** » 06 Sep 2011, 17:14

My car has been in the shop for two weeks now and the mechanic's computer showed the camshaft sensor was bad and he replaced. The car started right up after replacing the part. It sit six day in the shop over the holiday. He started putting it back together today so I could pick it up. He tried to start this morning and it would not start it would just crank and crank. The signal from cam and crank sensors are going to ECU but no fire at coils this was the same issue as when I took it in. He is really guessing from here and is just trying to toubleshoot wiring. Does anyone have any ideas to share?