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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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stransou
Posts: 1
Joined: 4 January 2010
Year and Model: 850 1993
Location: nc

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Post by stransou »

I cannot get my 850 1993 to start. All it doses is spend over but will not start. I have change the spark plug, fuel filter, spark plug wires, I can here the fuel pump running when I turn the key to the on position. Any suggestion.

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phils94850
Posts: 1156
Joined: 11 July 2006
Year and Model: 2009 s60 turbo
Location: Indiana
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Post by phils94850 »

stran.. how many miles on the car ? You need to dig a little deeper. If you can get a fuel press. gauge check your fuel press. If it's getting spark and fuel it should try and start.

If all that checks out, then check and make sure you havent broke or stripped the timing belt.
1996 Platinum Edition

squiggy
Posts: 14
Joined: 22 December 2009
Year and Model: 1994 850 Turbo
Location: USA

Post by squiggy »

Just because your fuel pump is making noise does not mean it is doing anything. If you have an auto salvage yard nearby you might be able to pick up a 'new' fuel pump complete with plastic housing for $10 bucks. Just be very, very gentle when popping off the 'quick' connectors from the top of your fuel pump. You can do it with two flathead screwdrivers. You don't need a special tool. But don't force things. And be very gentle popping the connectors back on.

jblackburn
MVS Moderator
Posts: 14043
Joined: 8 June 2008
Year and Model: 1998 S70 T5
Location: Alexandria, VA
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Post by jblackburn »

An engine needs 3 things to run:

1) ignition
2) fuel
3) air

First, see if there are any codes stored in the engine computer. The cars will store codes even if there is no check engine light turned on.

Check for a spark from the coil - pull out a spark plug, and crank the engine and see if it sparks. If not, there are several things to check.

Next, check the fuel pressure at the schrader valve on the engine. If it's very low, this is your problem.

Let us know what you find out, and we can help further!
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

FCPEURO
Posts: 3002
Joined: 17 June 2009
Year and Model: 2006 XC90 V8
Location: Milford, CT
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Post by FCPEURO »

^^^^

Agreed.

If you don't have spark => Check Crank Position Sensor and Cam Position Sensor

If you don't have fuel => Fuel pump or clogged fuel filter

If both seem ok, check for holes in the intake hoses and for major vacuum leaks. Also make sure that the injectors are firing.

mirae1
Posts: 21
Joined: 27 December 2009
Year and Model: 850, 1994
Location: Washinton

Post by mirae1 »

Two weeks ago I had similar issue with my '94. I had fuel pressure and spake but it would not fire. It was suggested, on this forum, to put a table spoon of oil in each cylinder, put the plugs back in and it would start. This worked like a charm.....Don't ask me why as I still do not understand the logic other then a compression issue. The car has started and ran fine since then. Now I have a transmission issue I need to research...Good luck

jblackburn
MVS Moderator
Posts: 14043
Joined: 8 June 2008
Year and Model: 1998 S70 T5
Location: Alexandria, VA
Has thanked: 9 times
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Post by jblackburn »

^^^ Yes, if you have moved your car quickly and shut the engine off again, it washes all the oil away from the rings by drowning them in gas, which will cause it to have very low compression across the cylinders. This is referred to as 'lawnmower syndrome'. Putting the oil in the cylinders helps the car restore the compression it needs to start.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

mirae1
Posts: 21
Joined: 27 December 2009
Year and Model: 850, 1994
Location: Washinton

Post by mirae1 »

That was my issue. I had started the wifes car and just moved it out of the garage and parked it with out allowing it to warm up. The next day it wouldn't start. The oil was a great trick and worked like a charm. Never dreamed I would have had ring wash.

patrycyo
Posts: 38
Joined: 25 October 2009
Year and Model: V70-R FWD manual
Location: Miami / Paris

Post by patrycyo »

I think mine is wash too... after several trouble and finally one bad injector. Changed 5.

but still not start ! I ve just killed a new battery to try to start.

Add oil in cylinders etc. more than a spoon.

What is the solution ? try again and again and again ? kill the second battery.. ? dont want to start.
V70-R FWD 1998 stage 3 "black pearl"

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