Starter relay?

toddmr · Post by **toddmr** » 23 Jul 2010, 19:11

My 855 won't start.

Put in the key and turn and it doesn't crank.

Christmas tree on the dashboard.

Fuel pump active.

Sometimes I'll get a click like a relay and sometimes not.

I've seen a number of references to a "starter relay" but no instructions on where it is.

Help?!

Post by **Ozark Lee** » 23 Jul 2010, 19:35

Chances are you have a failing PNP switch. Try rowing the shifter back and forth from low to park, quickly, about 20 times and then see if the car will crank.

...Lee

toddmr · Post by **toddmr** » 23 Jul 2010, 19:47

I've replaced the PNP switch.

Post by **FlyingVolvo** » 23 Jul 2010, 20:17

Bad camshaft position sensors? Or ECT? Usually those two sometimes cause the no-crank problem.

Are there any codes that you can get?

toddmr · Post by **toddmr** » 23 Jul 2010, 20:40

Post by **FlyingVolvo** » 23 Jul 2010, 20:46

Sorry, the engine coolant temperature (ECT) sensor will sometimes not allow the engine to start if it's faulty, although I think usually it will still allow it to crank.

Pretty certain though that the cam position sensor will not allow cranking.

Post by **pkc303** » 24 Jul 2010, 00:54

I vote for the cam position sensor.

oldschoolvolvo · Post by **oldschoolvolvo** » 06 Dec 2012, 09:58

I'm going to resurrect this thread b/c I have the same intermittent issue as the OP. Happened this morning where turned the key, everything lights up as normal, fuel pump on but no crank. I held the key in the "start" pos for ~20sec before the car turned over and started. PNP has been replaced in the last 2yrs, cam sensor replaced a few months ago, no CEL codes. My gut feeling is there is a sluggish relay somewhere. Any thoughts?

Post by **cn90** » 06 Dec 2012, 10:14

The 1998 S/V70 has starter relay (previous years 1994-97 has no starter relay).
To test the starter motor, remove the Starter Relay, use a jumper wire and jump 30 and 87, the starter motor should run, if not the problem is in the wiring or starter motor itself.

I made a diagram here for all the fuses/relays for the 1998 S/V70:

oldschoolvolvo · Post by **oldschoolvolvo** » 06 Dec 2012, 10:31

awesome! thank you!