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1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

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
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1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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abscate
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1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

Post by abscate » Fri Mar 23, 2018 4:53 am

I had highway time on a trip , so hooked up the AUTEL in data mode and found its

(E) none of the above

It looks like ME7 fires the injectors in two banks, as evidenced by this

(Pic)

Other trivia

On over run, the throttle plate closes to 20% and the fuel injector time drops to about 2 msec, ignition timing is retarded , probably to protect from lean running

I tried To measure max boost but there were too many cops

I can drive up to 65 mph with no or minimal boost, then it starts boosting on slight hills

Max turbo control duty circle seems to be about 60%
IMG_1101.jpg
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Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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abscate
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Re: 1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

Post by abscate » Fri Mar 23, 2018 6:41 am

The powertrain management electrical diagram shows that each fuel injector on ME7 has its own ground (they have a common 12V)- I wonder if/why the still fire in only two banks?
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Re: 1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

Post by RickHaleParker » Fri Mar 23, 2018 11:16 am

Sloppy translation ...?
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

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Re: 1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

Post by abscate » Fri Mar 23, 2018 12:10 pm

Someone with VIDA can tell if that system reports 5 separate injector durations or only 2

It could just be my scanner software, correct, Rick.
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Re: 1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

Post by wizechatmgr » Sat Mar 24, 2018 12:02 am

I'll look tomorrow if I'm awake during any "normal" hours - otherwise Monday afternoon.
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 - ~187k miles

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Re: 1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

Post by abscate » Sat Mar 24, 2018 12:40 am

Good, then you stop by and solve my click whoosh problem too

:-)
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Re: 1999 V70T5M56 ME7 batch fire or sequential fire of fuel injection

Post by wizechatmgr » Sat Mar 24, 2018 6:55 pm

You could always pull them all out, place them in glass jars and video tape it - it gives you a good excuse to replace the o-rings :)
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 - ~187k miles

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