PDA

View Full Version : T4 Had Dodgy Idle Today and Stalled



Stevie-Boy
Sunday 17th August 2008, 15:59
Car has been fine up till today and then as I stopped to reverse the car into a driveway earlier, the revs started to dive up and down and then it stalled. It hasn't done that before :-(

It fired right back up and I took it for a little spin and it hasn't done it again.

I note in my other thread about the fan issue that the MAF was mentioned and I'm wondering if this might be the cause for both issues here. I had MAF issues with my Primera Turbo and it ran absolutely awful until sorted so I know how much not to underestimate the effects of a MAF!

Anyone got any comment on that issue?

Just had to spend 9 quid on a headlight bulb too and noticed today that one of my low profile tyres had 10psi in and is probably slow punctured.

The honeymoon period is most definately over!!

S70T5Chris
Sunday 17th August 2008, 16:14
Sounds to me like the Air Idle Control Valve. It's a common fault on the earlier T4's. My T4, on accasion, does the exact same thing. You can take the old one off, and clean it carb cleaner. I have done a couple of times on mine, it seems to work for a short period and then the problem returns, so i'm ordering a new one. From volvo they are about £150, there is someone selling them on ebay for less than £40 delivered! Click Here (http://cgi.ebay.co.uk/Idle-Air-Control-Valve-Volvo-S40-I-V40-Estate_W0QQitemZ230255003889QQcmdZViewItem?hash=it em230255003889&_trkparms=72%3A984%7C39%3A1%7C66%3A2%7C65%3A12%7C2 40%3A1318&_trksid=p3286.c0.m14)for the link.

Once I recieve it, i'll let you know if it's any good!

Stevie-Boy
Sunday 17th August 2008, 16:21
Nice one, cheers for that. How often does the issue come back once you clean it up? Should I expect this problem to keep happening from now on until the part is changed?

EDIT: If it just happens once in a while and does it once then runs fine for a while, it almost sounds fine just to leave it and put up with it for the times that it does happen!

S70T5Chris
Sunday 17th August 2008, 16:35
The last time my car did it was about a week ago, it hasn't done it since, but I don't do much mileage in it. I think it'll be pretty random to be honest. It's worth whipping it off and cleaning it out (i'm sure there's a How To on VOC somewhere), that may cure the problem.

Like I said for £40 it's worth taking a punt on the ebay one. I've ordered one already, if it does the job (I see no reason why it won't!), i'll let you know.

S70T5Chris
Sunday 17th August 2008, 16:41
The How to wasn't on VOC, it's on S40Concepts, Click Here (http://s40concepts.net/forum/index.php?t=msg&th=9231&start=0&rid=&S=e2401560d29584cf438a95bce8ddae0f)

Jocksuper7
Sunday 17th August 2008, 16:44
do not buy a cheap maf from ebay unless its from a scraper, they are worse than useless, though however give it a clean up, also if its a phase 2 give the map sensors a quick blast and you should be dancing, if it continues there will be a code that should pop up if its a fueling prob or poor spark but cleaning the maf should do the trick, just be carefull, mine was struggling ideling but it was down to the maf, i changed alsorts to no resolve a 4 quid can of carb cleaner was the key

Stevie-Boy
Sunday 17th August 2008, 22:09
Nice one guys, I shall clean both the MAF and the idle air control valve and see if this does it again. If so, I shall replace the valve and eventually the MAF if it continues :-)

Just my luck that it starts doing this a couple of weeks after I buy it, typical!!

jimka
Monday 18th August 2008, 16:55
The How to wasn't on VOC, it's on S40Concepts, Click Here (http://s40concepts.net/forum/index.php?t=msg&th=9231&start=0&rid=&S=e2401560d29584cf438a95bce8ddae0f)

just to hi-jack - how is the S40?

S70T5Chris
Monday 18th August 2008, 18:09
just to hi-jack - how is the S40?

It's reet! Got a couple of things to do on it (Rear wishbone bushes, AICV, and i've ordered a new fuel pressure regulator, as thats the most probable cause of the slow starting issue!) Other than that it's all good. Still derliberating on what to do with the wheels! I'm taking it to trax in a couple of weeks to chuck round silverstone!

How's your's going, good? I must come and have a look at this amazon of yours!!

jimka
Tuesday 19th August 2008, 14:27
It's reet! Got a couple of things to do on it (Rear wishbone bushes, AICV, and i've ordered a new fuel pressure regulator, as thats the most probable cause of the slow starting issue!) Other than that it's all good. Still derliberating on what to do with the wheels! I'm taking it to trax in a couple of weeks to chuck round silverstone!

How's your's going, good? I must come and have a look at this amazon of yours!!

dont! - once you see the welding required even you'll run! :)

S40 is good - tempted to flog it and get a T5 again... i'll have to do it whilst "she's" not watching though :)

S70T5Chris
Thursday 21st August 2008, 21:49
This is what arrived from ebay. Looks decent enough. Fitted it this afternoon, the car's running fine. We'll wait and see if the irratic idle issue is resolved now, i'll keep you updated.

http://www.fabandsite.co.uk/my-volvo/s40/AICV.JPG

Stevie-Boy
Friday 22nd August 2008, 11:19
Nice one cheers ;-)

Mine hasn't done the dodgy thing since I posted it but there is time yet :-)

Stevie-Boy
Saturday 30th August 2008, 09:46
My car did the thing again yesterday! Revs went a bit micey at idle and then tried to stall. Just before it had done this, I noticed that when coming off the throttle in the higher gears and then accelerating, there was a hesitation. I'm going to do the valve cleaning job later today.

Is there anything I should look out for when doing it, any difficult bits in the job or fiddly bits or anything that might stop me being able to do it?

Cheers.

S70T5Chris
Saturday 30th August 2008, 10:07
My car did the thing again yesterday! Revs went a bit micey at idle and then tried to stall. Just before it had done this, I noticed that when coming off the throttle in the higher gears and then accelerating, there was a hesitation. I'm going to do the valve cleaning job later today.

Is there anything I should look out for when doing it, any difficult bits in the job or fiddly bits or anything that might stop me being able to do it?

Cheers.

na it's a piece of piss to do.

So far I haven't had the problem come back since i fitted the new AICV, but I haven't done a huge amount of mileage.

Stevie-Boy
Saturday 30th August 2008, 16:37
As I could have predicted, mine doesn't seem to look like the one in the how to LOL.

Can anyone confirm that I am removing the right part please?

On my T4, that cover is not removable with a hex tool, it is part of the cover that goes over the full engine. Underneath that is what I think is the valve but it looks weird as it has like a cylinder barrel type thing screwed to it and the connector is plugged into the barrel bit rather than the area with the two bolts. Is this the right thing?

Stevie-Boy
Saturday 30th August 2008, 16:55
I used my bonce for once and looked at that ebay link from the start of the thread and spotted that they do indeed have a kinda barrel bolted on, sweet and off I go again!

Stevie-Boy
Saturday 30th August 2008, 17:09
Tried and failed! Needed to remove the full engine cover and I have no tools that will remove those bizarre hex bolt things, grrr. My IAC valve is held in place with hex bolts too, why??!!! Why use poxy bolts that nobody can get out, what is wrong with normal bolts that everyone else uses?!

I hve some allen keys but they won't seem to remove these, so I guess I need to go and buy a set of sockets that end in these weird hex ends. Weird, annoying!!

Filterlab
Saturday 30th August 2008, 19:24
Actually Torx bolts are exceptionally common in vehicles, they were introduced by Ford many many years ago to increase the torque by area (hence the name) on a bolt.

Stevie-Boy
Saturday 30th August 2008, 19:26
That's cool, I was just irritated at the time that I couldn't get the bolts out! :-)

I'll buy a set of torx doofers, hopefully including the size I need!

If someone with a T4 can confirm the size needed to remove the engine cover and the IAC valve, that would be doubly awesome!

Stevie-Boy
Sunday 31st August 2008, 10:46
Gonna go and buy tools to do this job, anyone know the size before I go? Cheers.

jimka
Sunday 31st August 2008, 14:50
most places sell torx sets similar to this one

http://www.electronicsnmore.com/images/vttorx.gif

i think the top bolts are T27 or near that, its raining hard so not going outside to check!

make sure you a standard set and not a ball set, the ball set have round edges and can strip the bolts

Stevie-Boy
Sunday 31st August 2008, 15:55
Cheers you are right, the top ones are T27 and the bolts for the IAC are T30.

Car had been getting worse last night and this morning, stalled today again.

Just took it off and gave it a good spray with carb cleaner, it was pretty filthy in there! It's just sat outside now making sure it dries fully before re-fitting and hopefully this will stop the problem, if not only for a while!

Stevie-Boy
Sunday 31st August 2008, 22:01
Have drove the car for a bit tonight and it feels much smoother, will need to drive it more to see if that is just coincidence but I'm pretty sure the whole feel has been improved by doing that.

Many thanks to all who suggested the fix and assisted with tips and links etc :-)

Stevie-Boy
Friday 27th March 2009, 13:57
Chris, any update on your ebay IACV?

My car has been running high and a bit jerky and stally, it is most definitely time to replace the IACV I think.

Curious on how that ebay one went for you before I buy a 130 quid one.

S70T5Chris
Friday 27th March 2009, 14:20
Chris, any update on your ebay IACV?

My car has been running high and a bit jerky and stally, it is most definitely time to replace the IACV I think.

Curious on how that ebay one went for you before I buy a 130 quid one.

Still running fine, so i can't see any problems with the cheepy one on ebay!

Stevie-Boy
Friday 27th March 2009, 17:48
Cheers, that is good to hear, they have one listed on ebay today but it doesn't cover the T4 it seems, does not mention working on the 1.9:

http://cgi.ebay.co.uk/Idle-Air-Control-Valve-Volvo-S40-I-V40-Estate_W0QQitemZ330263141632QQcmdZViewItemQQptZUK_ CarsParts_Vehicles_CarParts_SM?hash=item3302631416 32&_trksid=p3286.c0.m14&_trkparms=72%3A1121%7C66%3A2%7C65%3A12%7C39%3A1%7C 240%3A1318

Any ideas if I need a different one?

S70T5Chris
Friday 27th March 2009, 19:49
Cheers, that is good to hear, they have one listed on ebay today but it doesn't cover the T4 it seems, does not mention working on the 1.9:

http://cgi.ebay.co.uk/Idle-Air-Control-Valve-Volvo-S40-I-V40-Estate_W0QQitemZ330263141632QQcmdZViewItemQQptZUK_ CarsParts_Vehicles_CarParts_SM?hash=item3302631416 32&_trksid=p3286.c0.m14&_trkparms=72%3A1121%7C66%3A2%7C65%3A12%7C39%3A1%7C 240%3A1318

Any ideas if I need a different one?


I think thats the same one i bought. It has a part number listed. Double check it with the part number of yours, thats what i did from memory.

DaveT4
Monday 6th April 2009, 14:03
have had the dodgy idle thing happen a couple of times,cleaning out the throttle bodie has hopefully sorted the issue although ive yet to find out

Stevie-Boy
Tuesday 2nd June 2009, 15:03
Just to update, I bought one of those ones from partsdome on ebay.

The car runs absolutely spot on now, idle is perfect, no dipping of revs or hesitation.

Very nice purchase :-)