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Start...Shudder...Stall...Re-Start...Runs OK...No CEL

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#21 ·
Re: (VolvoINSIDE)

VolvoINSIDE, I can see why it's working for Dodge- I suppose it's because fuel pump takes a couple of seconds to build up pressure in the fuel line. I'm not sure how it works in Volvo but I suspect there's no high pressure in the line -I recently replaced a fuel filter in my S70 and its connection is certainly not capable to hold any excessive pressure, it'll leak. Based on the fact it's not leaking - I trust there's no high pressure here.
BTW, it stalled on me this morning again. Taking it to the dealer this weekend
 
#23 ·
Re: (d_man)

I've got a technical diagram & description of the S40 fuel system and it makes no mention of a pump in the system anywhere except in the fuel tank. So if a check valve to hold pressure anywhere in the system doesn't seal perfectly You could be experiencing fuel starvation until the pump gets the system pressure built back up which could take a second or two. You need more fuel to start a car than to idle the engine.... I wouldn't discount the fact this could be the problem. Plus there are some subtle differences between the fuel system between the T5 & 2.4i's so this could explain why the 2.4i's aren't having the problem.
Guess Volvo should put a "Wait to Start" light in the dash like I have in My diesel pickup for the glow plugs.
Image
 
#24 ·
Re: Re: (mullmann)

I have a 2.4i with 1850+ miles and have not experienced this problem...at least not yet. However, I do have the typical high RPMs and loud idle when first starting. This lasts for about 5 to 10 seconds and then the RPMs drop, the engine quiets down and everything is normal. As far as I understand this is normal and not an issue.
 
#25 ·
Re: Re: (CINCYFAN)

Thank God I am not the only one with this problem. After I brought my T5 in for the 7500-mile scheduled service, the tech ran out as I was driving off and told me to downgrade to 87 octane. I thought he was crazy, but maybe I will give it a shot. It is tough to justify why my $30k+ Volvo takes two tries to start, but my wifes '02 Saturn starts on the first time, every time. I am bringing it back in next week and will keep all informed.
 
#26 ·
Re: Re: (Baghdaddy)

1500 miles on my s40 T5 and I experience the same problem, and it only happens when the car sits for more then 1 day. I have always ran 93 octane fuel and always put the key in pos 2 and wait about 5-10 secs before fully turning the key. This has never helped me.
 
#27 ·
Re: Re: (Baghdaddy)

Quote, originally posted by Baghdaddy »
Thank God I am not the only one with this problem. After I brought my T5 in for the 7500-mile scheduled service, the tech ran out as I was driving off and told me to downgrade to 87 octane. I thought he was crazy, but maybe I will give it a shot.

Well, at least they are being consistent here in Texas. I've been told the same thing. I just filled up the tank for the first time after that advice, and totally spaced out and put premium in again. I'll go to regular on the next fillup. If you try it, please do report back. (Welcome home, incidentally!)
 
#30 ·
Re: Re: (skibum)

Quote, originally posted by skibum »
what was his reasoning for switching to 87?!
Image

My own theory.

Personally I'm guessing it's a timing issue. Lower octane has less of an advance timing which enable the car to start correctly. The computer sets a more advance timing for higher octane. Although this is good for normal driving, it could be too advance for starting. I think what I did triggered something in the computer to back off timing a bit because I haven't had the problem since.
 
Discussion starter · #31 ·
Re: Re: (mullmann)

Ding Ding, Round 2... here's the latest...

Dealer informed me late today that they were just finishing-up installing a new fuel-injector rail w/injectors. The assembly came from a another new T5 that they had in inventory.

Since I have a comparable loaner, I ask them to keep my car 'til Monday and perform start-ups tests Saturday morning and Monday morning. If there are no issues, I'll pick it up at lunch on Monday.

More to follow... good luck to all of you with this issue.
 
#32 ·
Re: Re: (FlyByT5)

Quote »
The assembly came from a another new T5 that they had in inventory.

I love how they handle new inventory. I wonder what's going into that car, your assembly? They once swapped the windshield wiper for me from the lot when I complained that mine was not working properly
 
#33 ·
Re: Re: (volvoNB)

Quote, originally posted by volvoNB »
I think what I did triggered something in the computer to back off timing a bit because I haven't had the problem since.

I tried your method and unfortunately it didn't help me!
 
#34 ·
Re: Re: (mullmann)

I've just tried the "key-in, key-in-II, start-engine" trick after work - I tried to hear if a fuel pump kicks in -no pupm sound in II, and the engine still barely made it from the first attempt, I mean it picked up, ran like @400-600RMPs for a coupla seconds, then got to norm. I'm definetely taking it up to the dealer's attention tomorrow, will keep you guys posted
 
#35 ·
I posted this in another thread, but what it sounds like is leaky fuel injectors. I am not an expert, but it certainly sounds like that could be causing it, though the lack of pressure could be doing it as well. Leaky injectors would neccesitate new injectors, so maybe a dealership is thinking the same way that I am.
 
#36 ·
Re: (CobaltFire)

This morning, before taking it to the dealer - I started it with a couple of seconds delay in "II". Didn't hear a sound of the fuel pump BTW. Nevertheless - it failed to start at the first kick, same thing - seems like it's starting, then RPM's drop to like 300-400, and then it stalls, all in a matter if 2-3 seconds.
And, of course - dealer didn't find anything, no trouble codes, unable to reproduce, all that mumbo-jumbo. Exactly, I'm unable to predict when it fails either. All I was told was -"If this happens again - give us a call, we'll take the car for a couple of days and will try to look further"
 
#37 ·
Re: (d_man)

Quote, originally posted by d_man »
seems like it's starting, then RPM's drop to like 300-400, and then it stalls, all in a matter if 2-3 seconds.

Mine used to do this. Struggle to start. Then a week later it just dies almost immediately at first start. Now it's working fine.
 
#39 ·
Mine sat at a parking garage while I was in Seatle this weekend. I filled it up with 89-Octane the day before I parked it there and upon my return, I tried the key-in-position-II-delay and it started right up. My tech told me that it was an issue with the temps that the fuel burns at. He stated that higher octane fuels burn cooler and that is why the car is having a hard time with cold starts????? Am I crazy or is he off his rocker? I thought higer octane had a higher oxygen percentage and was thus more flammable. Maybe I am wrong, but I think it has more to do with the timing issue that VolvoNB described. Either way, it is BS and I am bringing it back in Tuesday.

I think it would be interesting for we with the problem to compare VIN's to see if all of our cars came of the line during a certain sequence. Maybe we can help Volvo identify a bad set of injectors or pumps and force a recal. Any takers? Mine is #YV1MS682452089209, so my chassis sequence number is 089209.

Thanks for the welcome home. I start my first civilian job tomorrow! It will be nice to go to work and not worry as much about getting shot at!
 
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