2000 V70 SE stalling P1670, P1615

martynj · Post by **martynj** » 15 Oct 2019, 10:33

Hello, It's been a while since I've posted but I'm in need of some experienced help. Sorry in advance for the long post.
I've got a 00 V70 base (SE) model with 271K on the clock. A little over a month ago the car started to cut out after driving for about 45 minutes or so. It will start up again and go for a bit but the more you push it the shorter amount of time it will go before cutting out again. When it stalls, as long as I leave the key in position 2, I get the check engine light as well as the ETS and up arrow lights on the dash. I can also hear the fuel pump relay cycling/clicking that will coincide with the ETS light dimming a bit. Pull the codes and I get P1670 as a confirmed code and P1615 as a pending code. If I turn the key to off and/or take it out and check again, no codes!.
P1670 is the antenna ring code and I have replaced that. Basically every time the car has stalled for almost any reason the immobilizer code comes up, so more often than not it is a red herring in my experience.
P1615 is an ECU faulty signal (intermittent or permanent) code.
I was fairly confident that it was an ETM issue and I've had a XemodeX ETM in for the past 170K miles so figured it was probably due for replacement (they sent a new one under warranty) but after installing the new one yesterday the same issue reappeared.
A bad ECU is certainly possible but could that also be a red herring for a bad fuel pump relay? Current relay is about 1.5 years old. I will exchange for a new one since I got it through FCP but not confident that will do it.
Any experience or insight with this issue would be greatly appreciated.

greg850r · Post by **greg850r** » 15 Oct 2019, 19:30

Are you able to drive it with a fuel pressure gauge attached? Sounds like a clogged fuel filter could be a possibility.

martynj · Post by **martynj** » 15 Oct 2019, 20:02

Fuel filter is relatively new along with the pump. It’s definitely more of an electrical issue the way it cuts off sharply. Before stalling the dash lights will flash for a split second. It may do this 3 or4 times before actually cutting out completely. Thanks for the suggestion though. Couldn’t hurt to try it. I’ll see if this fuel pump relay does the trick first.

Post by **abscate** » 15 Oct 2019, 20:12

The electrical part the ignition switch lasts about 130k on these cars. You might’ve due for your third one,

How a car “ quits” is a lousy diagnostic, a fuel delivery problem will make the eng8ne stall and flash all the dash lights, pop a misfirecode ( maybe), etc.

martynj · Post by **martynj** » 15 Oct 2019, 20:36

I agree, not calling it a diagnostic though More of an observation based on my experience both with this car and previous cars. I’m not ruling anything out. Starting with the relay since they are a known issue and is cheap and easy. Ignition switch is definitely something I’ll look into as well since I’ve never changed that. Thanks for the advice and suggestions.

Post by **abscate** » 16 Oct 2019, 03:03

Oh yeah. Battery and alternator are connected at the starter lug on these cars. Bad cables and connections are good check points too, with your symptom of 2-3x flashing lights before quitting.

That does sound like an electrical fault, agreed.

I think I have a parts car switch for the later version ( VIN break on this part mid 1999) ignition switch and do come down through Bergen frequently

martynj · Post by **martynj** » 16 Oct 2019, 19:00

Thanks abscate, I work in Union County (Westfield), if the timing works out I may take you up on that. I'm pretty anxious to get this on the road so I can take the 04 off for a few days or more if needed to do rear suspension and parking breaks. I suspect that the tab on the knuckle (that holds the brake shoes in place) may have broken off as I've heard is a common failure on the P2 wagons. expecting the worst but hoping for the best.ha.

Post by **abscate** » 16 Oct 2019, 19:32

martynj wrote: ↑16 Oct 2019, 19:00 Thanks abscate, I work in Union County (Westfield), if the timing works out I may take you up on that. I'm pretty anxious to get this on the road so I can take the 04 off for a few days or more if needed to do rear suspension and parking breaks. I suspect that the tab on the knuckle (that holds the brake shoes in place) may have broken off as I've heard is a common failure on the P2 wagons. expecting the worst but hoping for the best.ha.

I have a trip to Princeton coming up and a monthly in Piscataway.

Stuck on EWR runway on my way to LAX. Our 757 has a clogged PCV

martynj · Post by **martynj** » 16 Oct 2019, 20:54

"Stuck on EWR runway on my way to LAX. Our 757 has a clogged PCV"

Ughh, that sucks. Hope you have a safe flight.

martynj · Post by **martynj** » 23 Oct 2019, 13:49

Sent a PM. Looks like it’s stalling in the outbox though. Thanks.