|
S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
Information |
|
'98 V40 T4 - high idle, EFI-254Views : 637 Replies : 2Users Viewing This Thread : |
|
Thread Tools | Display Modes |
Oct 10th, 2018, 20:23 | #1 |
Member
Last Online: Mar 21st, 2024 13:45
Join Date: Aug 2011
Location: CZ
|
'98 V40 T4 - high idle, EFI-254
When I start the engine, rpm revs to 3k and then fall down and fluctuate between about 1200 and 1700 rpm. Only code what I get (FCR diag) is EFI-254, probably relay terminal 3 short to ground. Diag also shows that the ECM stays in open-loop and don´t react to O2 sensor. Any hints please?
__________________
'96 850 R, B5234T5, AW42-50LE | '89 764 GLE, D24TIC, ZF 4HP22 '97 944 Turbo, B230FK, M90 (145kW/330NM - Vialle LPi, BTI chips, 16T@0.8bar, 3"DP+2,5"cat-back, wasted-spark, DO88 IC, Bilstein B6, lowered, dual-sways...) |
Nov 11th, 2018, 12:35 | #2 |
Member
Last Online: Mar 21st, 2024 13:45
Join Date: Aug 2011
Location: CZ
|
No ideas?
__________________
'96 850 R, B5234T5, AW42-50LE | '89 764 GLE, D24TIC, ZF 4HP22 '97 944 Turbo, B230FK, M90 (145kW/330NM - Vialle LPi, BTI chips, 16T@0.8bar, 3"DP+2,5"cat-back, wasted-spark, DO88 IC, Bilstein B6, lowered, dual-sways...) |
Nov 11th, 2018, 14:59 | #3 |
Premier Member
Last Online: Today 14:58
Join Date: Dec 2002
Location: Co. Limerick, Ireland
|
Sticking Idle Air Control Valve. When was it last cleaned/serviced? Also clean the throttle body and the butterfly valve as it may not be shutting 100% due to a build up of carbon deposits.
__________________
Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|