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1995 850 Turbo No-start

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
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Oddbob
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Year and Model: 1995 854 Turbo
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Oddbob

1995 850 Turbo No-start

Post by Oddbob » Fri Mar 29, 2013 6:10 am

Hey all. This morning I was making a left turn into the Waffle House across the street from work and had to gas it to prevent from being hit. I go in and get my food, 5 mins later I come back out and my car turns over but it won't crank. The battery is good, plenty of power to get it going. The car tries to run longer if I let it sit longer in between attempts to crank it. But even with the longest attempt to run, doesn't even last a second.

Sorry if this is a duplicate post, but my car is in a Waffle House parking lot, unattended and I'd really like for it to run... haha.

Any information would be appreciated!

Thanks


The Good - 1995 850 Turbo
The Eh... - 2004 Ford Focus
The Dead - 1996 850 GLT - The bane of the Grand Cherokee..

cn90
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cn90

Re: 1995 850 Turbo No-start

Post by cn90 » Fri Mar 29, 2013 8:50 am

Maybe the fuel relay goes bad.
Search forum for posts on jumping relay terminals 15 and 87.


2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

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erikv11
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erikv11

Re: 1995 850 Turbo No-start

Post by erikv11 » Fri Mar 29, 2013 8:54 am

Which is it not getting: fuel, spark or compression?

As suggested, its easy to start by checking fuel. Is there pressure at the fuel rail? There is a little Schrader valve, push it in see if gas squirts out.

Very common no-start items are fuel pump relay, fuel pump (both are no fuel) and cam position sensor (no spark).


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

Oddbob
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Oddbob

Re: 1995 850 Turbo No-start

Post by Oddbob » Fri Mar 29, 2013 11:48 am

Well I ended up calling AAA and got it towed across the street to the dealership I work at. Once I got it parked, I hopped in and turned the key to "on" and noticed there was no fuel pump noise. I looked at the fuse for the fuel pump (number 3 I think) and it was not blown.

I will check the schrader valve and I will scour the forum for the relay terminals.

Thanks for the help. Also, if it does happen to be the fuel pump itself, don't 850s have two of them?

Edit: After scaring me to death with statements of "We think the timing belt broke." we took the cover off and thankfully it's still there in one piece. It has spark and compression.

I guess that leaves the fuel system.


The Good - 1995 850 Turbo
The Eh... - 2004 Ford Focus
The Dead - 1996 850 GLT - The bane of the Grand Cherokee..

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erikv11
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erikv11

Re: 1995 850 Turbo No-start

Post by erikv11 » Fri Mar 29, 2013 3:25 pm

Your 850 only has one fuel pump, and it is pretty easy to get at. There is a pinned write up (or two!) in the Repair Database here.

The V70 AWD models have 2 pumps, maybe the rare 850 AWD Canadian models do as well, I don't know.

So yes try the jumper as cn90 suggested, that will tell you if it is the pump or the relay. The relay is under the fuse box. Relay failures are usually intermittent, pump failures are usually all at once, so I'm betting on the pump.


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

jacobharding
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jacobharding

Re: 1995 850 Turbo No-start

Post by jacobharding » Fri Mar 29, 2013 5:45 pm

You never confirmed if you had pressure at the rail. If not then yes, pump or relay probably. If you have pressure then I would check the injector relay under the radiator shroud, You will usually have the same symptoms as you would with no fuel pressure. Check the terminals and wires at the relay for corrosion and/or dry-rot. It will be the relay on the drivers side of the shroud.


I am not an expert mechanic, but I will attempt any repair. Worst case scenario is I screw it up worse than it was.

87 745 Turbo Intercooler...333k, all original!
96 850 Turbo wagon "totalled - parting out"
94 850 Turbo wagon waiting for tranny
2 94 855's gone
They're all gone now....

Oddbob
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Oddbob

Re: 1995 850 Turbo No-start

Post by Oddbob » Fri Mar 29, 2013 9:53 pm

I did fail to check the fuel pressure at the schrader valve because at the time I did not have a torx 25 to gain access to it. Later, however, a friend and I did check the electrical signal from the relay back to the fuel pump with a tool that emitted a sound whenever it received power. It buzzed for 3 seconds once the key was turned on when when we jumped relay terminals 15 and 87 with a paper clip, and it did the same with the relay installed. Good signals to the pump but with a volt meter as well, but the volt meter showed OL when we tested the pump itself, which lead us to believe the pump had an open circuit and thus was bad.

Some additional on-the-fly research showed us how the relay can go bad (but still work) and overtime burn out the fuel pump. So as soon as I can, I will replace the relay.

Currently the new pump is installed in the pump assembly and is waiting for me to reinstall it tomorrow. I have strong feelings (provided I don't blow myself up) that it will be fixed; however, if it is not fixed I will definitely check the injector relay (can't believe I we didn't think of that).


The Good - 1995 850 Turbo
The Eh... - 2004 Ford Focus
The Dead - 1996 850 GLT - The bane of the Grand Cherokee..

Oddbob
Posts: 67
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Oddbob

Re: 1995 850 Turbo No-start

Post by Oddbob » Sat Mar 30, 2013 10:12 pm

It lives! It was indeed the pump. But I'm still replacing the relay.

Later I did the timing belt/pulleys/tensioner with a friend. You'd better believe I kept referring to MVS! Although, I kept having to tell myself "I like my 850. I like my 850. I like my 850." Front wheel drive... man.

Edit: Also, the IPD timing tool (the blue thing with four pegs) is worthless! When it fits correctly either the exhaust cam is one tooth forward or the intake cam is retarded by one tooth. Don't waste your money.


The Good - 1995 850 Turbo
The Eh... - 2004 Ford Focus
The Dead - 1996 850 GLT - The bane of the Grand Cherokee..

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