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T5 Cranks, but Won't Start

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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ProStreetDriver
Posts: 17
Joined: 12 January 2013
Year and Model: 2007 Volvo C30 T5
Location: London, Ontario

Re: T5 Cranks, but Won't Start

Post by ProStreetDriver »

I'm actually no longer getting a tps code with the vehicle. That was solved when I reattached an extra wire to the coil which someone installed on the vehicle. I believe it must have something to do with the alarm system because that was installed afterwards and didn't come from the factory with it.
1996 Volvo 854 turbo automatic.

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abscate
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Post by abscate »

Ugh - troubleshooting someone's undocumented, non-stock wiring...

Sympathies...
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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ProStreetDriver
Posts: 17
Joined: 12 January 2013
Year and Model: 2007 Volvo C30 T5
Location: London, Ontario

Post by ProStreetDriver »

abscate wrote:Ugh - troubleshooting someone's undocumented, non-stock wiring...

Sympathies...
Mhmm... Dealership added it, once I get the car running I want to rewire it so it actually looks good.
1996 Volvo 854 turbo automatic.

ProStreetDriver
Posts: 17
Joined: 12 January 2013
Year and Model: 2007 Volvo C30 T5
Location: London, Ontario

Post by ProStreetDriver »

Making progress, but still haven't fully sourced the problem though. Just had the car fire today.

Anyway... Long story short, traced the wires from an ecu schematic which lead to that grey relay at the top of the rad with one connector including 4 wires. So the relay isn't closing the circuit when the ignition is on or the car is turning over. Popped the cap off the relay to check if it was okay inside and everything is clean. Also jumpered the relay and it works fine. So, plugged the relay back onto the car without the cap, closed the circuit and the relay on the other side switch, turned the car over, fires right up. So as the relay opens the circuit, engine quits. What is this relay controlled by or what would cause this???
1996 Volvo 854 turbo automatic.

Pauloil
Posts: 1038
Joined: 21 March 2006
Year and Model:
Location: davenport, IA

Post by Pauloil »

that's your problem, as long as the wires are good going to it. get new relay for the fuel injectors. that relay and the 103 fuel pump relay are known to go bad.

http://www.ipdusa.com/products/8080/113 ... -relay-850
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95 850glt 188K

ProStreetDriver
Posts: 17
Joined: 12 January 2013
Year and Model: 2007 Volvo C30 T5
Location: London, Ontario

Post by ProStreetDriver »

Found it... Broken orange/black in the harness just behind the rad where is comes out of the plastic duct.

Thank you :)
1996 Volvo 854 turbo automatic.

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