96 850 turbo- no start...no spark...no cel

mrbrightside2009 · Post by **mrbrightside2009** » 10 May 2021, 19:08

just had the engine swapped out, car cranks but won't start...not getting any spark...also no check engine light showing on dash with key in the on position. tried plugging in scanner...says communication error with ecu. swapped out coil.....crank sensor... plugs ..wires.. cap rotor...coil all brand new. also checked all fuses... one of the immobilizer fuses were blown...replaced still nothing.

Post by **erikv11** » 11 May 2021, 10:06

Check cam sensor, also how about are the little plates on the back of the cams in the correct orientation? I'd check them both.

Post by **misha** » 11 May 2021, 16:24

mrbrightside2009 wrote: ↑10 May 2021, 19:08 ...also no check engine light showing on dash with key in the on position...

This means that ECU doesn't get power.

mrbrightside2009 · Post by **mrbrightside2009** » 16 May 2021, 11:49

ok still messing with this.... found a few grounds not hooked up....one by starter, small black wire and one on firewall....coil seems to get really hot after cranking... 2 plugs are unhooked....the black one is under the manifold but doesn't seem to have anywhere to plug in....brown is by the passenger headlight.....what are these for?

Post by **Sveedy** » 16 May 2021, 12:37

I have the same car - I can't see where that black plug you're showing is. Maybe a little better picture and I could tell.
The brown/orange plug should just be clipped to the back of the headlight assembly. There is one on each headlight housing.
I'm guessing for fog lights but that's just a guess.

Post by **erikv11** » 16 May 2021, 13:00

Is the cam sensor connected? Is the crank sensor connected? IAC and TPS also in that area but I did not go and look what color their plugs are.

Also maybe let us know many pins on that black plug (tewo?), might help to figure out what it goes to.

Azik09 · Post by **Azik09** » 16 May 2021, 13:21

Brown connector is for headlight adjustment. Black connector seems like knock sensor, it does not affect spark and injection. As misha said above, ECU is not powered, it's 100%. You said about disconnected ground wire near starter, there should be 1 or 2 more. Maybe they are disconnected too?

Post by **erikv11** » 16 May 2021, 13:37

Almost but not quite 100% just because bulb could be burnt out for the CEL ...

Post by **Chuck W** » 16 May 2021, 15:58

Is the ECU ground under the PS headlight in place?

mrbrightside2009 · Post by **mrbrightside2009** » 20 May 2021, 18:43

not seeing a ground under the headlight....took it out...not even sure where it would go...can somebody get a pic please?

check engine light was lit 2 months ago...doubt it burned out.