Running rough when hot - Page 2

itarumaa · Aug 4th, 2010, 13:04

Quote:

Originally Posted by mikeyskona

stick the car in neutral, stick your head under the car and rev to 3500 ish with your hand.. see if the rattle is coming from exhaust area.

If it is (around the cat) i can almost guarantee your cat is breaking down.. which would explain alot.

Ok, that I will do today. And I will also clean up all the electronic connections to maf, throttle body etc. What would be good cleaner for this purpose?

This is a start anyway for finding out the error(s).

mikeyskona · Aug 4th, 2010, 13:08

Carb Cleaner

.. It's pretty neutral... Or electrical contact cleaner (but dont use that on the MAF sensor wire because if contaminated you can kill it).

Easy start did a good job of cleaning out my throttle body and ICV

itarumaa · Aug 4th, 2010, 13:22

Ok, I try to buy the carb cleaner today later on and post here the results,

any more idea(s), please keep them coming

mikeyskona · Aug 4th, 2010, 13:26

Quote:

Originally Posted by itarumaa

Ok, I try to buy the carb cleaner today later on and post here the results,

any more idea(s), please keep them coming

Well as said before, when i got mine, i had all sorts of problems with it... ended up with a 20-30 something page thread, and we covered pretty much all the bases.. There are alot of things it could be, but with the vibraty noise at mid rpm, my money at the moment is on the cat.... although don't dispair, they're not as expensive as you might think... especially if you think "sod it" and go for a complete race-exhaust system with the 100 cell cat.... you end up with the perfect excuse for blowing a few hundred quid on ya car..

lol

scoobysn7x · Aug 4th, 2010, 22:39

I've found that if your careful you can successfully clean the maf with electrical contact cleaner just make sure you leave it somewhere warm overnight to let all the cleaner evaporate, did this on my T4 and it made it run smoother, also did my new car (maverick) with it and saw improvements in the engine running

itarumaa · Aug 5th, 2010, 08:51

it works again

The reason was that oil was over the engine (not much).

That oil then was leaking over the sparkplug, then oil find it way inside the lead (where the spark plug thin end is) and therefore the car was running on three cylinders.

Now I need to know why the oil is there, any ideas?

Also I did clean the maf, throttle body etc using electronic cleaning stuff from Halfords, maybe this was a mistake but car works so I am happy about that.

Thanks again for help, all of you,

4 forty · Aug 5th, 2010, 11:14

possibly the oil filler cap seal has detereriated

itarumaa · Aug 5th, 2010, 12:24

Quote:

Originally Posted by 4 forty

possibly the oil filler cap seal has detereriated

Good idea, and should be easy to fix,

I have to check this,

where I could find a new one, if needed.

Baffler · Aug 5th, 2010, 12:45

Your main Volvo dealer should have them in stock. Not very expensive

itarumaa · Aug 5th, 2010, 13:41

I bought the seal from Ebay, £8.48 GBP with postage to Ireland,

ok maybe a bit rip off (postage) but I do not have time to drive around looking for Volvo dealers, and my Volvo takes quite much petrol so in a way difference in cost is +-0

Aug 4th, 2010, 13:08	#12
mikeyskona Premier Member Last Online: Aug 24th, 2012 12:10 Join Date: Jun 2010 Location: Plymouth	Carb Cleaner .. It's pretty neutral... Or electrical contact cleaner (but dont use that on the MAF sensor wire because if contaminated you can kill it). Easy start did a good job of cleaning out my throttle body and ICV __________________ [gone]98 V40 - T4 CD[/gone] [mine]Renault Laguna II Tractor[/mine] [theMrs]97 V70 2.5 turbo AWD[/theMrs]

Aug 5th, 2010, 11:14	#17
4 forty VOC Member Last Online: Aug 12th, 2015 14:44 Join Date: Dec 2001 Location: sunderland	filler cap seal possibly the oil filler cap seal has detereriated

Aug 5th, 2010, 12:45	#19
Baffler Premier Member Last Online: Yesterday 13:47 Join Date: Dec 2002 Location: Co. Limerick, Ireland	Your main Volvo dealer should have them in stock. Not very expensive __________________ 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.

Aug 4th, 2010, 13:22	#13
itarumaa Junior Member Last Online: Apr 10th, 2011 12:58 Join Date: Aug 2010 Location: Maynooth	Ok, I try to buy the carb cleaner today later on and post here the results, any more idea(s), please keep them coming

Aug 4th, 2010, 22:39	#15
scoobysn7x Premier Member Last Online: Jun 2nd, 2024 21:15 Join Date: Sep 2009 Location: Newcastle	I've found that if your careful you can successfully clean the maf with electrical contact cleaner just make sure you leave it somewhere warm overnight to let all the cleaner evaporate, did this on my T4 and it made it run smoother, also did my new car (maverick) with it and saw improvements in the engine running

Aug 5th, 2010, 08:51	#16
itarumaa Junior Member Last Online: Apr 10th, 2011 12:58 Join Date: Aug 2010 Location: Maynooth	it works again The reason was that oil was over the engine (not much). That oil then was leaking over the sparkplug, then oil find it way inside the lead (where the spark plug thin end is) and therefore the car was running on three cylinders. Now I need to know why the oil is there, any ideas? Also I did clean the maf, throttle body etc using electronic cleaning stuff from Halfords, maybe this was a mistake but car works so I am happy about that. Thanks again for help, all of you,

Aug 5th, 2010, 13:41	#20
itarumaa Junior Member Last Online: Apr 10th, 2011 12:58 Join Date: Aug 2010 Location: Maynooth	I bought the seal from Ebay, £8.48 GBP with postage to Ireland, ok maybe a bit rip off (postage) but I do not have time to drive around looking for Volvo dealers, and my Volvo takes quite much petrol so in a way difference in cost is +-0

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