2000 XC70 - A little help with diagnostics, please?

Post by **FlyingVolvo** » 18 Jun 2009, 17:11

If it's a 2000, then you should still be under warranty right? Almost no doubt that is an ETM issue which will be covered (they better!).

Post by **BEJinFbk** » 18 Jun 2009, 18:33

ecbsykes wrote:If it's a 2000, then you should still be under warranty right? Almost no doubt that is an ETM issue which will be covered (they better!).

I don't know a lot about the 99- systems,
but could this be temp sensor related?

Post by **FlyingVolvo** » 18 Jun 2009, 18:37

That's actually a possibility too. I can't seem to find the thread, but there was a post about the temp sensor causing some bad engine problems similar to this.

While I think it's still possible the ETM could be on its way out, if it's at the point of relentless surging, wouldn't the ETS light go on?

dislusive · Post by **dislusive** » 18 Jun 2009, 18:41

The ETM is still under warranty.

I figured they would make me jump through some hoops; replace the PVC system, etc... first. I was trying to do as much of that as I could before I took it there, but the car has become an accident waiting to happen.

So much for reliability

I called Volvo directly about the dealer stating they would charge me for the ETM cleaning, dealer said they would have to do that first and charge me $250 + $100 diag fee, and Volvo said that would all be taken care of by them. I don't have to pay them a cent if the ETM is the issue. But, back to the issue in the last paragraph.

I'll see how it turns out.

I plan on driving this car over 1k miles in 2 weeks. I have to get it fixed.

dislusive · Post by **dislusive** » 18 Jun 2009, 18:46

BEJinFbk wrote: I don't know a lot about the 99- systems,
but could this be temp sensor related?

Interesting. What kind of behavior would the car exhibit if this were the case?

Post by **FlyingVolvo** » 18 Jun 2009, 19:11

I'm pretty sure if the temp sensor is giving a crazy signal, the fuel/air mixture is going to be crazy as well, going from lean to rich, lean, rich, possibly causing the surging similar to MAF or ETM problem.

dislusive · Post by **dislusive** » 18 Jun 2009, 19:21

No codes would be thrown for this issue either?

dislusive · Post by **dislusive** » 19 Jun 2009, 10:03

Dealer just called...

The positive line, coming from the bat, is getting *very* hot, it will burn your skin if you touch it. They read the line at 117volts, think that's the value he stated, so there is a lot of resistance in the line.

They are going to replace both positives and the negative lines.

Good news:
They swept the ETM and said it came back perfect. This could be the cause of the surging/idling (ECM not getting enough power to it)

Bad News:
Replacing these cables is $630, and it's not a guarantee that it will fix the original problem. This *must* be fixed before it burns out other electrical components, I.E. ECM, and before they can move on to test other parts of the system.

Post by **vegasjetskier** » 19 Jun 2009, 10:29

If he told you 117 volts he's feeding you a line of BS. There's no way there could be that much voltage - your whole electric system would be fried and your car probably would have started on fire.

dislusive · Post by **dislusive** » 19 Jun 2009, 10:45

I might not have been 117, but it was definitely 100 and ended in 7. Maybe 107?

I agree that's really high as well. The dealer knows best, right? *shrugs*

I will ask him again next time I speak with him, to confirm.

2000 XC70 - A little help with diagnostics, please?

Re: 2000 XC70 - A little help with diagnostics, please?