Engine: 2.5: - dropping revs

rachelbelmont2005 · Jul 1st, 2009, 20:40

I need some advice from you lot about my car.

It starts fine, engine runs smoothly. The problem we have is when you put the clutch down to come to a stop, sometimes the car will either stall or almost stall, more so when it's cold. Othertimes it's fine.

A new set of sparkplugs has improved the situation to the point where it isn't doing it as often (the old ones were black, sooty and burnt), but still occasionally.

I have had the ETM checked and it had a new MAF in Jan 2008. What is next to rule out?

liuleichan · Jul 1st, 2009, 20:47

As you said when cold, consider having the CTS (coolant temperature sensor) checked / replaced.

They're not terribly expensive or difficult to replace, and they can be tested to see that they're working OK. You'd probably have codes stored if it was playing up.

rachelbelmont2005 · Jul 1st, 2009, 20:56

I don't have a code reader, should probably get one. Do most volvo's use the same one? If they do it might be a worthwhile family investment.

There's my car, my dad has a 1998 S70 2.0 10V, brother has a 1998 V40 2.0T and mum has a 960.

Chris_Rogers · Jul 2nd, 2009, 18:42

The info is here:

http://www.volvoforums.org.uk/showthread.php?t=48510

Basically all the cars except yours, and maybe the 960 depending on which engine is fitted, are not OBDII compliant, the 10V car's engine ECU can be read using flash codes.

rachelbelmont2005 · Jul 2nd, 2009, 22:08

so buying one code reader to suit all is not a goer then

Anyone got any more ideas on the stalling problem?

liuleichan · Jul 2nd, 2009, 22:59

Quote:

Originally Posted by rachelbelmont2005

so buying one code reader to suit all is not a goer then

Anyone got any more ideas on the stalling problem?

We can all throw speculation as to what it might be, but either reading or gettings the codes read would be the next best thing. Do you use a Volvo dealer, or an independent for servicing? If getting or making a code reader is not something that's going to be that easy for you, I'd see if you can get either a good Volvo specialist / independent to read any codes, or failing that, perhaps your nearest Volvo dealers.

Chris_Rogers · Jul 3rd, 2009, 16:36

Quote:

Originally Posted by rachelbelmont2005

so buying one code reader to suit all is not a goer then

Anyone got any more ideas on the stalling problem?

No, but you can make a simple LED code reader for yours.

http://www.volvoforums.org.uk/showthread.php?t=46943

rachelbelmont2005 · Jul 3rd, 2009, 19:11

Quote:

Originally Posted by Chris_Rogers

No, but you can make a simple LED code reader for yours.

http://www.volvoforums.org.uk/showthread.php?t=46943

I thought those didn't work on cars with ME7?

My car is a 2000 2.5 10V V70 Classic with ME7

Chris_Rogers · Jul 3rd, 2009, 20:02

It won't work with ME7 but I don't think any 10 Valve cars or non turbo ones had ME7.
In fact I didn't think the 10V engine was used after '98.

liuleichan · Jul 3rd, 2009, 20:13

Quote:

Originally Posted by Chris_Rogers

It won't work with ME7 but I don't think any 10 Valve cars or non turbo ones had ME7.
In fact I didn't think the 10V engine was used after '98.

That puzzled me, too.

I was going to suggest checking out some of the ignition components, but read the OP, which mentioned ETM and MAF which kind of seemed odd for a 2.5 10v.

Is it definitely a 10v, or is it a 140bhp 2.5 20v?

Jul 1st, 2009, 20:40	#1
rachelbelmont2005 Not a Dude! Last Online: Sep 13th, 2013 17:52 Join Date: May 2009 Location: here	dropping revs I need some advice from you lot about my car. It starts fine, engine runs smoothly. The problem we have is when you put the clutch down to come to a stop, sometimes the car will either stall or almost stall, more so when it's cold. Othertimes it's fine. A new set of sparkplugs has improved the situation to the point where it isn't doing it as often (the old ones were black, sooty and burnt), but still occasionally. I have had the ETM checked and it had a new MAF in Jan 2008. What is next to rule out? __________________ Mercedes A-Class CDI in Jungle Green (The Pea!) Volvo's loved and lost: V40 1.8GDI, S60 2.4T, V70 2.4 Classic, 740 GLE

Jul 1st, 2009, 20:56	#3
rachelbelmont2005 Not a Dude! Last Online: Sep 13th, 2013 17:52 Join Date: May 2009 Location: here	I don't have a code reader, should probably get one. Do most volvo's use the same one? If they do it might be a worthwhile family investment. There's my car, my dad has a 1998 S70 2.0 10V, brother has a 1998 V40 2.0T and mum has a 960. __________________ Mercedes A-Class CDI in Jungle Green (The Pea!) Volvo's loved and lost: V40 1.8GDI, S60 2.4T, V70 2.4 Classic, 740 GLE Last edited by rachelbelmont2005; Jul 1st, 2009 at 21:00.

Jul 2nd, 2009, 22:08	#5
rachelbelmont2005 Not a Dude! Last Online: Sep 13th, 2013 17:52 Join Date: May 2009 Location: here	so buying one code reader to suit all is not a goer then Anyone got any more ideas on the stalling problem? __________________ Mercedes A-Class CDI in Jungle Green (The Pea!) Volvo's loved and lost: V40 1.8GDI, S60 2.4T, V70 2.4 Classic, 740 GLE

Jul 1st, 2009, 20:47	#2
liuleichan Premier Member Last Online: Apr 17th, 2019 22:01 Join Date: Dec 2001 Location: .	As you said when cold, consider having the CTS (coolant temperature sensor) checked / replaced. They're not terribly expensive or difficult to replace, and they can be tested to see that they're working OK. You'd probably have codes stored if it was playing up.

Jul 2nd, 2009, 18:42	#4
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	The info is here: http://www.volvoforums.org.uk/showthread.php?t=48510 Basically all the cars except yours, and maybe the 960 depending on which engine is fitted, are not OBDII compliant, the 10V car's engine ECU can be read using flash codes.

Jul 3rd, 2009, 20:02	#9
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	It won't work with ME7 but I don't think any 10 Valve cars or non turbo ones had ME7. In fact I didn't think the 10V engine was used after '98.

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