Hesitation/vibration during high torque acceleration

Tiny
MKNOYCE
  • MEMBER
  • 2004 VOLVO XC70
  • 4WD
  • AUTOMATIC
  • 132,000 MILES
When on an on ramp or going uphill around 40-60 mph.

There seems to be a hesitation and vibration giving the sense that something is "slipping"

Any known issues/problems?
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Thursday, April 23rd, 2020 AT 5:13 AM

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Tiny
KASEKENNY1
  • EXPERT
Clearly when we get a hesitation or slipping like this, we suspect a transmission issue. However, Ford had an issue around this time of low fuel pressure causing a hesitation. Volvo shared a lot of common components around this time due to Ford buying them in 1999. So let's start with checking fuel pressure and go from there.

Here are some guides on how to do this:

https://www.2carpros.com/articles/engine-hesitates

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If we can confirm the fuel pressure is staying steady then we can move onto a transmission issue but let's start here. Thanks
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Thursday, April 23rd, 2020 AT 9:04 AM

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