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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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2001 V40 T4 Automatic feels slowViews : 1858 Replies : 19Users Viewing This Thread : |
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Feb 18th, 2018, 18:36 | #11 |
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Well that's a start, it is shifting but sometimes not. Can you get the codes read too? Also things to check are the MAF, boost actuator could be sticking, air leak in vac pipes.
This next bit is anecdotal but I found BP Ultimate to be a tad crappy compared to Vpower or Momentum, More fuel used and a tad under powered.
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Feb 18th, 2018, 18:43 | #12 |
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Thanks Haizum74
I have an OBD reader so will plug it in and see what it says |
Feb 19th, 2018, 13:49 | #13 |
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Hi guys
I have plugged the car into my OBD11 reader, very basic one, and this has thrown up code P0107, the MAP sensor. As my car has two of these sensors, could a faulty one be giving me the symptoms seen? Many thanks |
Feb 19th, 2018, 15:04 | #14 |
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A brief outline here
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2002 V40 T4 17" Arcadia's ,Boost Gauge ,Forge Dump Valve And Blanking Plate ,Front Upper Strut Brace |
Feb 19th, 2018, 15:38 | #15 |
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That looks promising , thankyou
I've ordered two new MAP sensors and hopefully the car will start performing better and not cut out on me Thanks all for your help |
Feb 19th, 2018, 16:48 | #16 | |
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Quote:
Now I’m no expert on autos but I can only assume that the kickdown is activated by a number of sensors one being throttle position then probably a speed sensor and also inlet vacuum pressure therefore if the map sensor is shot this will not be sending the correct info to ecm to activate the kickdown this is purely a theory of mine and I can not confirm this as factual just my 2 pence
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2002 V40 T4 17" Arcadia's ,Boost Gauge ,Forge Dump Valve And Blanking Plate ,Front Upper Strut Brace |
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Feb 19th, 2018, 16:59 | #17 |
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I did check for air leaks and found nothing unfortunately. Would have been a cheaper fix
Re the kickdown i'm not sure TBH, does anybody else have any thoughts? |
Feb 19th, 2018, 20:57 | #18 |
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May be a bit late, but when there is poor response, it tends to be a split air hose somewhere. You can check by lightly squeezing them to see a split. Also, tighten up the clips because any loose, the air pressure cause air blow out past the connections causing the same problems.
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Volvo V40 1.8 Petrol SE 2003 |
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Feb 21st, 2018, 00:10 | #19 |
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Make sure the transmission is not in unintentionally in 'W' (winter mode). Mind you, if it is you should see a yellow arrow warning light on the dashboard.
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Feb 23rd, 2018, 09:56 | #20 |
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May want to give throttle body a clean as well as the ICV.
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2001 V40 T4 S Auto on 177k 98 V40 T4 SE auto now retired @ 176k. |
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