Baffling Issue on Volvo 940 Turbo 

"Niquemarshall" (dominiquemarshall) 05/15/2016 at 18:59 • Filed to: None

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So i bought another 940 Turbo the other day but cant get it to run anymore...

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Urambo Tauro > Niquemarshall 05/15/2016 at 19:14

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Has it set any codes? And did you remove any of the new plugs to verify that it wasn’t dumping fuel?

Niquemarshall > Urambo Tauro 05/15/2016 at 19:58

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Yes it did but it’s obd1 so it’s hard to to pull codes. I lost my plug socket though. I’m suspecting a clogged cat since it’s rattles while the car bogs down

JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t > Niquemarshall 05/15/2016 at 20:03

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Fuel pressure regulator?

Niquemarshall > JawzX2, Boost Addict. 1.6t, 2.7tt, 4.2t 05/15/2016 at 20:10

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Already swapped out, no change

Urambo Tauro > Niquemarshall 05/15/2016 at 20:21

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There’s gotta be a way to access the codes by using a jumper wire or something. I just hate jumping to conclusions until hearing what the OBD and the spark plugs have to say.

The flooding bothers me, and I’m not 100% convinced that it was just from cycling the key forward to prime the system. But for what it’s worth, I’m not really familiar with Volvos.

Niquemarshall > Urambo Tauro 05/15/2016 at 21:10

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Yeah I thought it was kinda fishy, but maybe if an injector was leaking right? This is my first turbo car by the way

Urambo Tauro > Niquemarshall 05/15/2016 at 21:25

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Yeah, that’s one of the things that came to mind... But, again, I don’t want to jump to conclusions, and I’m sure you don’t want to throw parts at it either. A fuel pressure test might be in order...

Niquemarshall > Urambo Tauro 05/15/2016 at 21:55

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I’m definitely going to to do that soon

Niquemarshall > Urambo Tauro 05/16/2016 at 16:29

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brand new plugs are fouled already...

Urambo Tauro > Niquemarshall 05/16/2016 at 17:11

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Fouled as in running rich, or are they wet too?

Niquemarshall > Urambo Tauro 05/16/2016 at 18:42

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Running rich as hell, and very gassy smelling

Urambo Tauro > Niquemarshall 05/16/2016 at 22:53

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Any luck with codes yet?

Niquemarshall > Urambo Tauro 05/17/2016 at 00:12

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its showing a CEL but not throwing any codes.. I did run a diagnostic test just before the battery died and verified the throttle positiion switch is inpop

Urambo Tauro > Niquemarshall 05/17/2016 at 00:36

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Ah-ha! That sounds promising...

I’m not sure what a CEL without codes is supposed to indicate, though. You might want to remove that battery to reset things, and take that opportunity to fully charge the battery before reconnecting.

Niquemarshall > Urambo Tauro 05/17/2016 at 20:21

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Yeah I feel you man. Im going to replace the plugs, and it should run, albeit perhaps like crap, and just go from there