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Another P0089 issue

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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iastoddard
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iastoddard

Another P0089 issue

Post by iastoddard » Fri Nov 08, 2019 5:12 pm

My first post to this forum....
I have a 2007 XC70 automatic, for which I am grateful, bought used with 165k miles. It needs its annual inspection. It is currently throwing a code after two starts or ~30 miles after CEL reset - (P0089) Fuel Pressure Regulator 1, which is an auto-fail.

I have replaced the Fuel Pressure Sensor at the end of the rail, and the fuel filter. I do NOT have a damper on the fuel rail, despite my chassis number being 261xxx. I have what looks like the fuel line connection instead, between the last and second-last injectors instead of in the middle. I am attaching the view from the front.
FuelLineToRail-10.jpg
I hope the fitting is recognizable. (The pic is sideways, a pipe runs into the bottom of this fitting, and its top is in the rail.) My PEM is in the spare tire well.

A Volvo friend told me that he had a pinch in the fuel line near his steering rack that made his car throw the code. I hope to check for this next.
If my cause is the fuel line, is it in fixed pieces, requiring distinct replacement parts, or generic "by the foot" ?

Next I hope to get to O'Reilly's to check fuel pressures at the rail. I will add to this thread when I get the readings.
Thanks for any help.
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RickHaleParker
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Re: Another P0089 issue

Post by RickHaleParker » Mon Nov 11, 2019 5:38 am

Possible sources
  • Leakage in the fuel lines
    Blocked fuel filter or other restrictions.
    Dirt, debris, or loose objects in the fuel tank.
    Damaged fuel pressure sensor
    Damaged fuel pump
    Damaged fuel pump control module.
2019-11-11.png
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iastoddard


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
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1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

iastoddard
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Joined: Thu Nov 07, 2019 9:21 pm
Year and Model: 2007 xc70
Location: Houston TX
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iastoddard

Re: Another P0089 issue

Post by iastoddard » Mon Nov 11, 2019 9:03 pm

Thanks for the parts diagram / Vida dump. Is #14 fastener used to fasten the #1 fuel line to #5 rail? Does #3 pipe go back to the tank?

Dirty fuel? Hmmmm. I should be able to see that come out of the Schrader valve into a jar, no?

My chassis is (1)261968 and has no fuel pressure damper fitted. I cannot see how to map this into the 7-digit 2815xxx used in the parts catalogs. Got any hints?



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