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Long Cranking Time on 99 S70 GLT

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

Cricket502
Posts: 23
Joined: Tue Sep 23, 2014 8:21 am
Year and Model: 99 S70 GLT
Location: USA

Re: Long Cranking Time on 99 S70 GLT

Post by Cricket502 »

misha wrote: Wed Feb 07, 2018 3:07 pm
Cricket502 wrote: Wed Feb 07, 2018 2:09 pm ...I've noticed that if I turn the key to position 2 and wait 8-10 seconds, it starts up perfectly every time. Less than that, and it usually takes a long time to start. Did I get a bad fuel pump or something?
Fuel system is priming just for 2-3 seconds when key is in pos.II....after that the relay cuts off.
That said....when key is in pos.II,fuel pump runs ONLY for 3 seconds...after 3 seconds...you can wait as much as you want and that wouldn't/shouldn't make the difference in fuel pressure.
I guess that there are some electrical gremlins in the system.
I tested it repeatedly just to be sure, waiting only 3 seconds is not enough for my car to start normally. Even 5 or 6 seconds is hit or miss, but 8 is always enough for it to start right up. I also tested the fuel pressure, I was getting 56 psi while running and 50 psi as soon as I shut it off. It was slowly dropping after that (47-48 psi after a few minutes), which seemed similar but I wasn't able to wait 20 minutes to see how closely it matched abscate's data (Valentine's day plans...). So it does sound like I might have a restriction or something somewhere causing the fuel to take a while to fully pressurize, but I'm not sure where. The car shows no issues at all while it's running, and the new fuel filter I installed was a Mahle brand, which FCPEuro says is OEM.

Next time I get a dry day I'll see how quickly the pressure builds when the key is turned on, just for curiosity's sake. If I get full pressure after 3 seconds, then I'll start looking at electrical stuff again.
scot850
Posts: 6482
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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Re: Long Cranking Time on 99 S70 GLT

Post by scot850 »

When starting my FWD 00 V70 base, I can turn the key and it will almost immediately start up. With my 00 V70R AWD (different fuel system) I turn the key to position II, let the pump prime for a few seconds and then it starts straight up. If I don't wait those few seconds, the car will take several cranks to fire up. The AWD has had nearly everything replaced in the fuel system, including all the lines and much of the evap system and the fuel pump and ejector pump. All parts were OE and it is still the same. Fuel pressure is still in the high 50's psi so I have learned to accept this as a 'quirk' and live with it.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
Cricket502
Posts: 23
Joined: Tue Sep 23, 2014 8:21 am
Year and Model: 99 S70 GLT
Location: USA

Re: Long Cranking Time on 99 S70 GLT

Post by Cricket502 »

Yeah, mine changed from starting up immediately to having this issue back in maybe October. Seems like I can just live with it, but it's bugging me that something changed and I can't figure out what. And I'm always worried that whatever the problem is could get worse and cause a real issue without a simple workaround.
scot850
Posts: 6482
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 22 times
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Re: Long Cranking Time on 99 S70 GLT

Post by scot850 »

Fair comment. If things change then there is that nagging doubt. If it just is that way like mine has been for the last 5+ years, I just learned to accept it especially as it was the least of the issues over the time.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
800artfreed
Posts: 79
Joined: Tue Apr 03, 2018 3:49 pm
Year and Model: 98 S70T5; 99 S70GLt
Location: Washington DC
Been thanked: 12 times

Re: Long Cranking Time on 99 S70 GLT

Post by 800artfreed »

I just have to mention that you could have a LARGE vacuum leak on the line that connects to the intake manifold near the middle then goes to the drivers side into a T fitting. The size of the line is different at each end because there is an adapter in the middle of the line. Small line at the nipple and larger line at the T fitting. My hose was split 80% of its length past the adapter going towards the T. This could create a very lean condition at the cold start of an engine.
VolvoVoyeur
1998 S70-T5 200K+
1998 V70-T5 200k+
1999 S70-GLT 80k+
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