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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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Hesitation when accelerating, only when first starting the cViews : 391 Replies : 2Users Viewing This Thread : |
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Jun 1st, 2020, 20:16 | #1 |
New Member
Last Online: Oct 16th, 2020 14:24
Join Date: Jun 2020
Location: York
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Hesitation when accelerating, only when first starting the c
Hi, I have a problem with acceleration (2004 S60 2.5T). When the car is first started, regardless of whether the engine is hot or cold, I get this stuttering hesitation.
I can get rid of it by accelerating at full throttle for a few seconds, eventually bringing back full power. It's strange, it almost feels like it unblocks something. The problem will then not come back until I switch off the engine and start it again. Even if I only switch off for a few seconds, it happens again every time. My car has the plastic 'saddle' tank but does not have a PEM. Also does not have a pressure sensor on the fuel rail. I have replaced the fuel filter but the problem persists. Also cleaned ETM. I am getting the dtc code P1234 (fuel pump driver module off line). As I said, I don't have a PEM on this car so I assume this is all handled by the ECM. I would be very grateful if anyone has any ideas. Thanks. |
Jun 2nd, 2020, 21:27 | #2 |
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Last Online: May 14th, 2022 16:32
Join Date: Mar 2016
Location: Edinburgh
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I had this and changed the TCV just a few days ago and all is good now.
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Jun 5th, 2020, 14:20 | #3 |
Flaccid Member
Last Online: Mar 22nd, 2024 15:14
Join Date: Nov 2016
Location: Norwich
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If you havent looked, take off the VVT solenoids see if the green gasket filter is clogged.
the car cant breathe properly with VVT inactive and becomes sluggish
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2001 Volvo S60 T5 SE 2.3 Geartronic (Scrapped) 2007 Volvo S60 T5 SE 2.4 Geartronic (Sold) 2008 Volvo V70 D5 SE Sport Geartronic (Current) |
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