2001 Volvo V70 2.3 Turbo - Volvo Forums - Volvo Enthusiasts Forum

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Old 09-13-2018, 08:20 PM
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Unhappy 2001 Volvo V70 2.3 Turbo

Bought last weekend thinking it needed a new fuel pump. Got new fuel pump it starts then stumbles and dies. Previous owner said wife was driving and car started bucking and loosing power she pulled to side and it died. He got it home but then couldn't get it started. He thought it was fuel pump also. we replaced filter and line going from pump to fuel filter. at a loose and thinking it might be MAF? We unplugged MAF and it stalled and would run the same way it did when plugged in. Put about 7 gallons in tank, just in case it was out of gas, no help. No codes, battery on charge, dead. Any suggestions? Have a blessed day!!
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Old 09-14-2018, 10:39 AM
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Location: Birmingham AL
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You need a good scan tool to read data. At idle, there is a reading of how much air is coming across the MAF sensor. It is probably much different than actual due to the insulating quality of dirt and dust accumulating over the years.

For a no-cost repair attempt, use the correct type of cleaner to spray in the MAF metering window. Then, remove and clean the throttle body, both sides. You want both sides gleaming so that any airflow going through that thing goes smoothly. I've seen Volvo cars that we buy for resale that wouldn't idle properly and give poor throttle response come to life after a good throttle body and MAF sensor cleaning.
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Old 09-15-2018, 03:36 PM
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Join Date: Nov 2008
Location: Hackensack
Posts: 539

+1 on getting codes read by a quality reader and the cleaning mentioned above.
You said, "We unplugged MAF and it stalled and would run the same way it did when plugged in". Would it start then run badly then die? I'm not trying to be difficult here. Your description isn't clear.

Additional random thoughts.
How many miles on this car you bought? Please include this in any post about any problem.
Did you do anything else to it?

Check the incoming air hoses. They can split and create problems.
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