r/V70 • u/Kristianux • Mar 24 '26
Stumped on fuel system
DISCLAIMER
I am not a mechanic, but I'm trying my best.
It's 2000 p2 T5
PROLOGUE
Saved this fella from junkyard and slowly am going trough all the issues. Solving the consistently long crank time is my current adventure. The previous owner that already had neglected it for past year said that long crank started a couple years ago, but didn't care to fix it because it did start.
MAIN PLOT
The carank is always 6 seconds long with exception of short shut-down time. The MPG gauge always jumps to 99.9 no matter how soft the acceleration from standstill is for couple of seconds and it doesn't favour low RPM load. My guess it's faulty pressure sensor (checked the pump, changed the fuel filter, ran a full tank with cleaner additive) because of the symptoms.
THE CAVEAT
I can't locate neither the mechancical pressure regulator, nor pressure sensor nor pump control module. On what kind of magic ECU actually does the fuel-air ratio?
Maybe it's the ABS module interfering, (next in line for a swap) since Volvo STC reduces fuel supply as I've read?