Engine: 70 T5: - Fault Code: EFI-231 Long Term Fuel Trim Part Load

LeeB · May 6th, 2011, 21:26

Okay guys, got a T5 with a LPG conversion (forget that part for now)

Been having issues with my T5 when cold starting on petrol... not always but often has been VERY rough idling... once warm (or on gas) would be okay (but still not perfect).

Read the fault codes and got:

EFI-231 Long Term Fuel Trim Part Load

after an extensive search on here and other tinternet sites the main things to check were MAF and vacuum hose elbows!

diconnecting and reconnecting the MAF while car was running caused a stall and also generated a MAF code that hadnt been present before - so im assuming this eliminates the MAF as its doing "something".

so started search of hose elbows with what seems the most common - hidden underneath the power steering reservoir/pump.... low and behold pipe is split and prodding the split with a screwdriver makes idle change!

so im assuming thats my problem and if not it needs replaced anyway!

what i need to know is where i can get the part? how much are a local reliable garage likely to charge me (ish) and is there a part number so i can guarantee the right part? - engine is a 1998 T5 without the ETM.

ive added 2 pics (not from my car) first shows general area im talking about - second shows the elbow hose in question!

thanks for your help guys!

Clan · May 6th, 2011, 22:20

That has been a common failure for over 10 years now , your volvo dealer can get you the correct one , a couple of £ .

LeeB · May 6th, 2011, 22:34

how much labour am i looking at?? im no mechanic! lol

RXS · May 6th, 2011, 22:54

Is the second pic you posted is the rubber elbo connected to the manifold or the PCV system only ask as that elbo looks like part of the PCV kit i bought from volvo, i stand corrected if im wrong

LeeB · May 7th, 2011, 20:50

from what i can tell from an american site its not part of the PCV system.

can anyone help with regard a part number???

Chris_Rogers · May 7th, 2011, 21:43

It is part of the PCV system, the info you need is here:

http://www.volvoforums.org.uk/showthread.php?t=46946

LeeB · May 8th, 2011, 10:22

thanks chris... that looks about right... would make the part number 1389574

im going to get this confirmed (somehow) tho before i order it as it wont be me doing the work so dont want to end up with a part that doesnt fit!

May 6th, 2011, 22:20	#2
Clan Experienced Member Last Online: Today 22:32 Join Date: Jun 2007 Location: L/H side	That has been a common failure for over 10 years now , your volvo dealer can get you the correct one , a couple of £ . __________________ My comments are only based on my opinions and vast experience .

May 6th, 2011, 22:34	#3
LeeB Junior Member Last Online: Nov 2nd, 2011 15:56 Join Date: Apr 2010 Location: leeds	how much labour am i looking at?? im no mechanic! lol

May 6th, 2011, 22:54	#4
RXS manic monkey Last Online: Mar 9th, 2019 13:08 Join Date: Jan 2010 Location: Kent	Is the second pic you posted is the rubber elbo connected to the manifold or the PCV system only ask as that elbo looks like part of the PCV kit i bought from volvo, i stand corrected if im wrong

May 7th, 2011, 20:50	#5
LeeB Junior Member Last Online: Nov 2nd, 2011 15:56 Join Date: Apr 2010 Location: leeds	from what i can tell from an american site its not part of the PCV system. can anyone help with regard a part number???

May 7th, 2011, 21:43	#6
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	It is part of the PCV system, the info you need is here: http://www.volvoforums.org.uk/showthread.php?t=46946

May 8th, 2011, 10:22	#7
LeeB Junior Member Last Online: Nov 2nd, 2011 15:56 Join Date: Apr 2010 Location: leeds	thanks chris... that looks about right... would make the part number 1389574 im going to get this confirmed (somehow) tho before i order it as it wont be me doing the work so dont want to end up with a part that doesnt fit!

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