Issue with 96 850R Starting Not Turning Over Topic is solved

wackenhut · Post by **wackenhut** » 19 Jun 2020, 15:55

I initially replaced the starter because the car was having trouble turning over.

The issue seems to happen when the engine is hot.

I was driving around and then out of the blue, the car would not start. No clicks, no turning over. The dash lights are coming on though etc.

I came back a few hours later and the car started fine.

I brought the car to my local volvo shop and the issue occurred while there so that would be a good thing! They noticed that there was a loss of amps from the battery to the starter. They replaced the PNP switch and that seemed to fix the issue.

A few weeks later, I was driving the car around and then parked in my friends driveway. The car did the same thing. I let it sit for a couple hours, came back and it started back up.

I called my mechanic after reading a few things on the forum about the starter solenoid and the wiring etc. They know volvos and they said they went through the whole electrical.

Long story short, what could be causing this now?

Aaron

Post by **FLXC90** » 19 Jun 2020, 18:53

try swapping out your start relay with a known good one

wackenhut · Post by **wackenhut** » 20 Jun 2020, 08:32

Where can I get a starter relay for my car? The dealer says it is out of production.

Thank you.

Post by **erikv11** » 20 Jun 2020, 13:26

I thought the 850 series did not have a starter relay. What part are you looking for?

Hopefully the aftermarket PNP didn't wear out already. My first suspect would be the electrical portion of the ignition switch, has that ever been replaced?

wackenhut · Post by **wackenhut** » 20 Jun 2020, 15:27

The ignition switch has been changed recently as well.

Jaydiesel · Post by **Jaydiesel** » 20 Jun 2020, 18:07

i see they said loss of amps between starter and battery. did they replace that wire? that wire has been issues for alot people. wire can get hot and mess up the flow of amps or start to fry.

Post by **jreed** » 21 Jun 2020, 06:06

Agreed with Jaydiesel above. My '97 855 had a similar hot no-crank symptom and the cause was a corroded positive battery terminal.
I wrote up short descriptions of the corrosion here:
viewtopic.php?f=1&t=61435
and of a replacement cable I made here:
viewtopic.php?f=1&t=61747

Post by **erikv11** » 21 Jun 2020, 07:31

jreed wrote: ↑21 Jun 2020, 06:06 ... corroded positive battery terminal ...

Yes, check that!!!

wackenhut · Post by **wackenhut** » 05 Jul 2020, 10:30

So I just checked everything out. The starter has been replaced, the PNP switch has been replaced, and the ignition switch has been replaced. I also check the battery terminal connections. The car randomly does not start, but it will start up after around 5 minutes. I open the hood when it does not start. Not sure if this does anything though. Any other ideas?

Thank you!

Post by **erikv11** » 05 Jul 2020, 10:37

Just to make sure we are on the same page, for the battery terminal the thing to check is the positive terminal not the connection to the battery per se. Check for corrosion where the cable goes into the lug. Preferably start the car, run in for 5 minutes, see if the lug starts to heat up. It shouldn't.