1.8 V40 Gdi Idle Speed - Volvo-Forums.com

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1.8 V40 Gdi Idle Speed, low idle speed

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radiosoundman View Member Profile	Mar 6 2007, 08:57 AM Post #1
Newbie Group: Members Posts: 4 Joined: 24-June 06 Member No.: 16,287 Status: Location: N.I. Drives: 2002 volvo v40	hi can anyone please help me my 02 v40 1.8 gdi has started to idle too slow about 300 rpm, this causes the engine to stall at road junctions or traffic lights other wise the car is running great (no misfires and gives a good performance) the problem seemed to happen after the battery was disconnected . the car uses a fly by wire system for the accelerater and going by the manual there is no way to adjust the idle speed . please has ayone any advise for me. regards radiosoundman.

Ryan 20 View Member Profile	Mar 13 2007, 03:02 PM Post #2
Expert Group: Members Posts: 531 Joined: 9-March 07 Member No.: 25,669 Status: Location: USA Drives: 1984 Volvo 245 DL	Try cleaning the Throttle body and or replace (IACV) idle air control valve

radiosoundman View Member Profile	Mar 14 2007, 07:21 AM Post #3
Newbie Group: Members Posts: 4 Joined: 24-June 06 Member No.: 16,287 Status: Location: N.I. Drives: 2002 volvo v40	hi thanks for your advise. i will let you know if it cures it.

radiosoundman View Member Profile	Apr 4 2007, 08:20 AM Post #4
Newbie Group: Members Posts: 4 Joined: 24-June 06 Member No.: 16,287 Status: Location: N.I. Drives: 2002 volvo v40	the answer to the slow idle was the re-learning by the engine management unit to reset , this took about 800 miles . in another forum it was talked about 400 miles for the emu to re-learn. advise given to me by an ex volvo engineer was correct he said to do nothing for a few weeks. advise from a volvo dealership suggested a top end decoke although in fairness they did'nt see the car. hope this might help someone else.

dazseaton View Member Profile	May 22 2008, 07:47 AM Post #5
Newbie Group: Members Posts: 13 Joined: 21-May 07 Member No.: 28,283 Status: Location: nottingham, uk Drives: v40 1.8 gdi 1998	I have a gdi and when sitting in traffic it starts revving itslef until it cuts out. it has been fine all winter but has reappeared since the warmer weather has kicked in. could this also be the iacv casuing this. the throttle body has been cleaned and checked several times.

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