S70 Stalling

Rebuild · May 5th, 2013, 11:20

Hello everyone!
First off my english is a bit dodgy, but please try to bear with me.
I have volvo s70 1999. 2.4 liter engine, manual, no turbo, fwd and 300000 km (186411 miles) driven.
Problem i have is that sometimes when i'm stopping say to a red light engine might shut off. Working engine should drop rpm nicely around 900rpm right? Well my volvo has significant overshoot. So much so it occasionally shuts the engine off. Engine always starts with ease after this. Tried to read trouble codes. Nope. None. Nada. You get the picture. Idle seems smooth though. So to recap, clutch in, breaking, rpm does not settle to idle speed but rather overshoots, engine stalls. I'm not expert in this sorta thing but i'm thinking etm or maf (likely etm) is starting to fail. Thoughts?

deathrider311271 · May 5th, 2013, 11:38

check for leaks in the intake side of things, clean the ETM check your spark plugs are the correct ones and check coil packs for cracks or burning marks

Rebuild · May 5th, 2013, 12:22

Thanks deathrider. I'll let you guys know what i find. Might take a while though.

oban · May 5th, 2013, 22:27

Hi easiest way 2 check for air leaks on engine,spray a little bit of easy start round the inlet manifold, if rpm climbs u have a leak! Just don't spray any near air filter.

Rebuild · May 11th, 2013, 13:17

Thought i'd give and update. Checked for air leaks. Could not find any. Cleaned etm and this issue seems to have disappeared. Need to drive more before i can say this was definitely the culprit.

Rebuild · Jun 21st, 2013, 18:20

Hey guys!
The problem is gone. Cleaning the ETM definately fixed it. Thanks for help!

mikealder · Jun 21st, 2013, 18:29

As you have the non Turbo engine clean the ETM out once per year as it only takes 20 mins, I do this to my V70 each year - Mike

Rebuild · Jul 13th, 2013, 15:34

Quote:

Originally Posted by mikealder

As you have the non Turbo engine clean the ETM out once per year as it only takes 20 mins, I do this to my V70 each year - Mike

I thought i'd clean it once it starts acting up again. Have you managed to keep all etm related issues away just by cleaning the thing regularly? Or is replacement inevitable? As always thanks for replying and have a good day

mikealder · Jul 13th, 2013, 15:40

I had replacement non contact angle sensor fitted to the broken ETM and it has been fine for the past four years but I still give it a clean each year to prevent carbon build up - Mike

May 5th, 2013, 11:20	#1
Rebuild Junior Member Last Online: Mar 10th, 2020 20:16 Join Date: May 2013 Location: Nottingham	S70 Stalling Hello everyone! First off my english is a bit dodgy, but please try to bear with me. I have volvo s70 1999. 2.4 liter engine, manual, no turbo, fwd and 300000 km (186411 miles) driven. Problem i have is that sometimes when i'm stopping say to a red light engine might shut off. Working engine should drop rpm nicely around 900rpm right? Well my volvo has significant overshoot. So much so it occasionally shuts the engine off. Engine always starts with ease after this. Tried to read trouble codes. Nope. None. Nada. You get the picture. Idle seems smooth though. So to recap, clutch in, breaking, rpm does not settle to idle speed but rather overshoots, engine stalls. I'm not expert in this sorta thing but i'm thinking etm or maf (likely etm) is starting to fail. Thoughts?

May 5th, 2013, 11:38	#2
deathrider311271 I've Been Banned Last Online: Jun 21st, 2022 19:26 Join Date: Mar 2010 Location: Grimsby	check for leaks in the intake side of things, clean the ETM check your spark plugs are the correct ones and check coil packs for cracks or burning marks

May 5th, 2013, 12:22	#3
Rebuild Junior Member Last Online: Mar 10th, 2020 20:16 Join Date: May 2013 Location: Nottingham	Thanks deathrider. I'll let you guys know what i find. Might take a while though.

May 5th, 2013, 22:27	#4
oban Junior Member Last Online: Jun 6th, 2014 00:11 Join Date: Nov 2012 Location: Ringstead	Hi easiest way 2 check for air leaks on engine,spray a little bit of easy start round the inlet manifold, if rpm climbs u have a leak! Just don't spray any near air filter.

May 11th, 2013, 13:17	#5
Rebuild Junior Member Last Online: Mar 10th, 2020 20:16 Join Date: May 2013 Location: Nottingham	Thought i'd give and update. Checked for air leaks. Could not find any. Cleaned etm and this issue seems to have disappeared. Need to drive more before i can say this was definitely the culprit.

Jun 21st, 2013, 18:20	#6
Rebuild Junior Member Last Online: Mar 10th, 2020 20:16 Join Date: May 2013 Location: Nottingham	Hey guys! The problem is gone. Cleaning the ETM definately fixed it. Thanks for help!

Jun 21st, 2013, 18:29	#7
mikealder VOC Member Last Online: Nov 6th, 2016 10:18 Join Date: May 2009 Location: Blackpool UK	As you have the non Turbo engine clean the ETM out once per year as it only takes 20 mins, I do this to my V70 each year - Mike

Jul 13th, 2013, 15:40	#9
mikealder VOC Member Last Online: Nov 6th, 2016 10:18 Join Date: May 2009 Location: Blackpool UK	I had replacement non contact angle sensor fitted to the broken ETM and it has been fine for the past four years but I still give it a clean each year to prevent carbon build up - Mike

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