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How long should it take to start? Topic is solved

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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mrbrian200
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Re: How long should it take to start?

Post by mrbrian200 »

Both cars are fine.
Without writing a book, well, maybe a short one...
The coil on plug system on the '00 needs to rotate the engine a little longer and read the cam/crank sensors in order to figure out the rotational position of the engine and spark the correct cylinder at the proper time. The older car merely needs to know that any one piston is at compression TDC, the mechanical design of the cap/rotor will send the spark to the correct plug without the ECU needing to figure this out. Back then MFI systems generally pulsed all injectors as you turned the key so the ECU didn't have to figure out injector timing right away either. However, that isn't necessarily ideal from the standpoint of tailpipe emissions.
Unless the '00 cranks more than about a second, there's nothing wrong with it.

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WhatAmIDoing
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Post by WhatAmIDoing »

I believe in the manual for a 98 turbo, it says crank for upwards of 10 seconds. If it catches in under 10 seconds, then i guess according to Volvo, it's fine.
'98 S70 T5M - 323,000mi - awaiting heart transplant :shock:
'98 V70 T5M - 324,000mi - my new project
'99 S70 "AWD" - 220,000+mi - gone :cry:
Knows enough to be dangerous :wink:

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abscate
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Post by abscate »

Well done.



I believe invoking reference material such as the official Volvo manual into a thread is a violation of the MVS terms of service, squashing debate and wild speculation, critical to gobbling our internet bandwidth..

#sarcasmoff
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Post by wizechatmgr »

Do you ever sleep Abscate? =p
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 -- ~231k miles
1998 V70 2.4 NA -- ~184k miles

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abscate
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Post by abscate »

The ECU has a random start delay number which amuses the coders as they watch it being discussed on the Internet.
Do you ever sleep Abscate? =p
Ha! International call and when the finance guys come on I just surf the web. They always allot 15 minutes for 30 seconds of content. Cash in? Receivables? Period expenses as percent of YTD? Thank you, go back to bean counting. What? Someone booked a first class ticket for 31/2 hour leg when the rule is 4? What does her manager think of this? You haven't asked? Maybe because she is at 167% of target she isn't focussed on this right now?
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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