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Sudden codes and pour drivability!

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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volvolugnut
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Re: Sudden codes and pour drivability!

Post by volvolugnut »

If the car sat outside or a building open to mice, I would look carefully for mouse droppings under the hood. All those vacuum leaks may be chewed hoses.
Or, could just be old, cracked hoses.

This is the tool for ECM and TCM.

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heatdev
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Year and Model: 1968 122s, 2000 v70x
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Post by heatdev »

Thanks! I just did an FCP order today, this wasn't on my radar when I made it. It going on the list for the next order.

The car was outside on the street.
I'm in Philadelphia, we've got field mice and rats, but I'd suspect the feral cats and hoodlum squirrels before the field mice.
Anything is possible. The car is due for some TLC.

Thank you for the help!
Cheers,

gd

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RickHaleParker
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Post by RickHaleParker »

heatdev wrote: 17 Aug 2020, 17:52 I reconnected the battery after some time, and drove the car 5 blocks and rescanned and received the following readings:
Did you clean the the battery cables and terminals? They are choke points for all the electrical circuits.
⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.

heatdev
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Year and Model: 1968 122s, 2000 v70x
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Post by heatdev »

Hello,

Good call, I did clean them. While checking for cracked wires and hoses, I discovered the intercooler hose, just above the engine shield was not tight. The hose clam was rusted through. The misfire in cylinder 1 code is still hanging on. As is p1550 for the transmission r sensor.

On the bright side the car drives a lot closer to normal now. In my hunting I fould the right inner tierod needed replacement... plugs and tierods arrive from FCP today!

Cheers,
gd

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RickHaleParker
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Post by RickHaleParker »

heatdev wrote: 19 Aug 2020, 12:18 The misfire in cylinder 1 code is still hanging on.
Misfire on one cylinder only has to be something specific to that cylinder. Have you tried moving the #1 coil, then #1 injector then #1 spark plug to another cylinder to see if the misfire moves with the component?
⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.

heatdev
Posts: 22
Joined: 9 August 2020
Year and Model: 1968 122s, 2000 v70x
Location: Pennsylvania

Post by heatdev »

I did. Swapped coil, and plugs. I don't want to touch the injectors until I get a tester on them. If I could sort out what the correct resistance for the brown injectors I've got I, I could put a meter on them.

Cheers. gd

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