IPD sale XeMODeX - Experts in Volvo Electronics
MVS-Amazon link helps MVS!

Get email notification of topic replies. Log in or register (free). Amazon Link Buy anything with this and it helps MVS!

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

Long Cranking Time on 99 S70 GLT

Post by Cricket502 »

So I've been having this problem since maybe Thanksgiving and I still can't figure it out. The car still starts so it's more of an annoyance than anything (so far), so that's why I waited so long to post. That and it takes a long time to scour the entire internet for a solution...

From a cold start, it can take anywhere from 1 second to 10 seconds of cranking before the car finally starts. It usually starts right up once warm. Turning the key to position II for a while to try and prime the fuel pump first doesn't seem to change much. Once it starts it idles and runs just fine, occasionally the first split second after starting has a bit of a kick but that's it. Around Christmas I started getting a random misfire check engine code on the highway and when accelerating hard. Based on everything I read, it sounded like my fuel pump check valve or pump itself was going bad, so I replaced the fuel pump and fuel filter. No more misfires, but I still have the long cranking problem.

The battery is only 1.5 years old, so I don't think it's that. I have had check engine code P0455 for a gross evap leak for years (tried replacing the gas cap, no luck and no problems due to the code, unless this is related) but that's the only CEL I'm getting after putting in the new fuel pump.

I just checked the car after sitting overnight and there was zero fuel pressure. Nothing came out of the Schrader valve under the hood. Is that normal, or should there be some pressure even after sitting overnight? What else could be causing the long cranking problem?
User avatar
misha
Posts: 4570
Joined: Sun Dec 07, 2008 4:09 pm
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 66 times
Been thanked: 176 times

Re: Long Cranking Time on 99 S70 GLT

Post by misha »

Regular priming,just before you start it is a MUST.System is designed that way.That's why the fuel pump runs about 2 seconds with key in pos.II...alowing the system to prime before start.
You need to try to prime it 2-3 times before you start it in order to eliminate check valve problem.
So....key in position II wait 2 seconds...back to pos.I and immediately back to pos.II.
Do that 2-3 times and 3rd time start the engine.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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 »

Alright, I followed those directions and it fired right up on the third crank. So I'm definitely losing fuel pressure. I'm thinking possible causes would be a faulty check valve in my new fuel pump from FCP, an actual leak in a fuel hose, or a leak in another component of the fuel system (injectors, fuel pressure dampener, not sure what else)? Anything else to look at, or specific places that are common to leak?
Ozark Lee
MVS Moderator
Posts: 14798
Joined: Thu Sep 07, 2006 8:24 am
Year and Model: Many Volvos
Location: USA Midwest
Has thanked: 4 times
Been thanked: 56 times

Re: Long Cranking Time on 99 S70 GLT

Post by Ozark Lee »

The check valve is located in the fuel pump cartridge itself. If you only replaced the pump itself and reused the housing (which is typical) then it won't fix a bad check valve.

If you are not holding pressure at the rail then the only options are to change the fuel pump cartridge or add a check valve to the fuel line.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe
User avatar
abscate
MVS Moderator
Posts: 23691
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 440 times
Been thanked: 1331 times

Re: Long Cranking Time on 99 S70 GLT

Post by abscate »

The specs o n a 1999 are 52 psi furl pressure at the rail, and at least 29 psi at the rail after 20 minutes. No overnight spec. That isn't a bad thing to measure though so maybe that's my project this week.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
User avatar
wizechatmgr
Posts: 1448
Joined: Thu Jan 12, 2017 1:07 pm
Year and Model: 1999 V70 XC AWD 2.4T
Location: Albany, NY area
Has thanked: 26 times
Been thanked: 68 times
Contact:

Re: Long Cranking Time on 99 S70 GLT

Post by wizechatmgr »

You're welcome to come measure mine as I fire it up at ~0755 @ 6 F... Hasn't been run since 1830 yesterday.

P.S. it's colder than cold out
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~193k miles
1998 V70 2.4 NA -- ~180k miles
User avatar
abscate
MVS Moderator
Posts: 23691
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 440 times
Been thanked: 1331 times

Re: Long Cranking Time on 99 S70 GLT

Post by abscate »

I'll leave the fuel pressure gauge out in the tundra for you...

Don't push the " incoming Missile button" by mistake this morning. (MRS Abscate actually is on that team in NYS)
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
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 »

I replaced the entire fuel pump assembly, not just the pump itself, so it sounds like the check valve should have been part of that new assembly. I'm going to poke around when I get a chance to pull my car into the garage today (way too cold outside here too) and see if I see or smell a leak anywhere. If not, I'll hit up autozone and see if they have a fuel pressure gauge I can borrow to get more info about my pressure drop over time.
User avatar
misha
Posts: 4570
Joined: Sun Dec 07, 2008 4:09 pm
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 66 times
Been thanked: 176 times

Re: Long Cranking Time on 99 S70 GLT

Post by misha »

What brand is your new fuel pump/assembly?
Is it new or used?
Large vacuum leak can affect starting and running.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
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 »

The fuel pump was a Delphi fuel pump assembly, new from FCP Euro. I'll look for bad vacuum hoses too while I'm under the hood
Post Reply
  • Similar Topics
    Replies
    Views
    Last post