s80 hard start when warm crank position code + srs light
#1
s80 hard start when warm crank position code + srs light
ok guys i got my Volvo s80 back together after a head job and now it acts like it doesn't want to start. it starts fine when cold but after it been warmed up it turns over a lot before it fires, and now its throwing a crank position code. iam stumped i dont think i need a new crank sensor. to top it all off i got a airbag light on and it has not been wrecked. can someone shed some light on this issue or point me on the right path thanks
#2
Few things could be causing the crank sensor code.
Bad\missing earth cable after doing the head job
VVT set incorrectly
Starter cable needs to be re-routed.
In my case it was the latter of the three. I had to re-route the red power cable going to the starter motor around the outside of the PCV pipe to stop it interfering with the crank sensor signal. Tell tale sign of this is that the tacho will fluctuate while you turn the motor over.
Bad\missing earth cable after doing the head job
VVT set incorrectly
Starter cable needs to be re-routed.
In my case it was the latter of the three. I had to re-route the red power cable going to the starter motor around the outside of the PCV pipe to stop it interfering with the crank sensor signal. Tell tale sign of this is that the tacho will fluctuate while you turn the motor over.
#4
Its possible that the timing is out in a manner that makes it hard to start warm and normal when cold. Think about the variables brought in as the result of a head job: Valve timing and grounding. Yeah, it could be an actual crank sensor issue too, but less likely to be honest. If the tacho holds a prettty steady 300RPM while cranking its probably not the sensor.
On the SRS light does an SRS Service message come up in the message center?
On the SRS light does an SRS Service message come up in the message center?
Last edited by NoLifeTilBoost; 02-15-2011 at 09:55 AM.
#5
A spike in the electrical system can set off the SRS light. I did it myself once by unplugging the radio with the battery still connected. When I had problem with the Anti Lock Brake (ABS) module it also set it off. This is why they tell you on this car before working on anything electrical, disconnect the battery.
You will need to find someone with a Volvo or BSR tool which can access the body codes to reset it. The conventional engine scanner will not clear this light.
Good luck with the cranking problem.
You will need to find someone with a Volvo or BSR tool which can access the body codes to reset it. The conventional engine scanner will not clear this light.
Good luck with the cranking problem.
#7
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