Any good 850 techs out there? Got a challenge for you

Pumpkinmikey · Post by **Pumpkinmikey** » 17 Jun 2019, 10:05

Well today I rechecked compression.cleaned plugs AND she started right up..smoked like pig but ran perfect. Same thing as last week.runs perfect if it starts..does anybody know the test value of crankshaft sensor??? That is the only other thing I touched today.

Post by **Chuck W** » 17 Jun 2019, 14:25

Did you check your ECT sensor connector yet?

Seriously, check it/clean it.

Post by **misha** » 17 Jun 2019, 15:19

What about main fuel injection relay?
Did you checked it's connection?
It's the grey one VOLVO on the fan shroud.

Pumpkinmikey · Post by **Pumpkinmikey** » 17 Jun 2019, 16:34

Yes cleaned ect connector.it was nasty and rubber inside goo. Cleaned good continuity resistance varies with temp.but it still no run
..today fired up running better than it should. Scared what happens in a.m.all I did was recheck compression and valve timing..cranked right up ??? I did have a priest in my car when I drove past..heehee

Post by **misha** » 17 Jun 2019, 16:42

Could be that cranking,when you re-checked compression,cleared the excessive fuel from cylinders.
Could be that it was just flooded.

Pumpkinmikey · Post by **Pumpkinmikey** » 17 Jun 2019, 17:05

I have been fighting this thing for a week. Pulled and cleaned plugs 4 times.flushed fuel sys. New gas.92.

tardcart · Post by **tardcart** » 17 Jun 2019, 19:05

clouds of smoke that's not black indicate not fuel related. you have a bad head gasket letting oil or coolant in to the cylinders. you have to give more info on coolant level and if this car is on the road or only started when you tinker with it.

Post by **RickHaleParker** » 18 Jun 2019, 21:26

Pumpkinmikey wrote: 17 Jun 2019, 17:05 Pulled and cleaned plugs 4 times.

Keep doing the same thing over and over until you get different results.

Post by **800artfreed** » 27 Feb 2020, 14:08

Any solution to your problem? Thanks.

Post by **abscate** » 28 Mar 2021, 00:24

2 years since OP checked in. You seldom learn anything from the “ humming bird on meth” approach to troubleshooting