Help me AEU86, you're my only hope
03-14-2021, 09:32 PM
Post: #4
RE: Help me AEU86, you're my only hope
Just something what came to my mind...

Similar problems on a mates volvo. Gradually got worse and worse untill it wasn't driveable anymore.
Looked like fuel pressure issues. Replaced everything, but no solution.

In the end the little hose which came off the fuel pump to the hard line outside the tank had a little split in it. So it would leak fuel back in the tank whenever the pump was making pressure. If the o2 sensor is reading leab, it must be something fuel related.

We measured fuel pressure multiple times and it all seemed OK (untill the end when the hose finally totally failed). But when the engine needed more fuel on the road, it just couldn't deliver it due to the split in the hose. When we took it out, it wasn't clear, but after further investigation we found the split in the hose.

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RE: Help me AEU86, you're my only hope - The Doctor - 03-14-2021 09:32 PM

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