IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Stalling Out

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

Mr. Detail
Posts: 347
Joined: Wed May 03, 2006 11:21 am
Year and Model: 2002 V70 N/A
Location: Newtown Square, Pennsylvania
Has thanked: 13 times
Been thanked: 2 times
United States of America
Mr. Detail

Stalling Out

Post by Mr. Detail » Sat Jan 11, 2020 10:20 am

Ok, here is my latest issue after replacing all five ignition coils and replacing all five spark plugs. Whenever I first start up the car in the morning, she shakes quite a bit before reaching the middle of the engine warm up gauge.
This seems to be whether it is cold outside or warm like today (60 deg.).
In fact, I thought because it was so warm out today I could just start her up and go but at the first stop sign the car just died. I re-started it several times before I could get it to move forward. Once it reached the middle of the engine temp gauge it was fine. Any thoughts why this stalling out issue is happening? No check engine light.
Thanks.

User avatar
RickHaleParker
Posts: 3428
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 409 times
United States of America
RickHaleParker

Re: Stalling Out

Post by RickHaleParker » Sat Jan 11, 2020 11:59 am

Check the resistance of the Engine Coolant Temperature (ECT) sensor against the engine coolant temperature.

15 kΩ at -20°C ( -4°F)
2.5 kΩ at 20°C (68°F) Typical room temperature.
0.3 kΩ at 80°C (176°F) This is 10 - 25°C below operating temperature*.

* OEM thermostat starts to open at 90°C (194°F), fully open at 105°C (221°F)

At 60°F the resistance should be ~2.0 - 2.5kΩ.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

User avatar
abscate
MVS Moderator
Posts: 19666
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 248 times
Been thanked: 805 times
Trinidad & Tobago
abscate

Re: Stalling Out

Post by abscate » Sat Jan 11, 2020 1:58 pm

I just bumped the cold start rough running thread whose root cause was a really badly torched vacuum hose
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

Mr. Detail
Posts: 347
Joined: Wed May 03, 2006 11:21 am
Year and Model: 2002 V70 N/A
Location: Newtown Square, Pennsylvania
Has thanked: 13 times
Been thanked: 2 times
United States of America
Mr. Detail

Re: Stalling Out

Post by Mr. Detail » Sun Jan 12, 2020 5:29 am

RHP, would the ECT sensor really cause the engine to completely cut out like it did several times? I was dead on the road and had to put it in drive and then re-start at least four times.
Thanks abscate for the bumped thread. I will look for that now.

Mr. Detail
Posts: 347
Joined: Wed May 03, 2006 11:21 am
Year and Model: 2002 V70 N/A
Location: Newtown Square, Pennsylvania
Has thanked: 13 times
Been thanked: 2 times
United States of America
Mr. Detail

Re: Stalling Out

Post by Mr. Detail » Sun Jan 12, 2020 5:30 am

By the way can anyone shoot me a snapshot of where the ECT sensor is?

User avatar
abscate
MVS Moderator
Posts: 19666
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 248 times
Been thanked: 805 times
Trinidad & Tobago
abscate

Re: Stalling Out

Post by abscate » Sun Jan 12, 2020 8:03 am

On a P2 follow the upper right radiator hose, the thick one, back towards the engine. It connects to a housing which contains the thermostat and the ECT sensor
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

Mr. Detail
Posts: 347
Joined: Wed May 03, 2006 11:21 am
Year and Model: 2002 V70 N/A
Location: Newtown Square, Pennsylvania
Has thanked: 13 times
Been thanked: 2 times
United States of America
Mr. Detail

Re: Stalling Out

Post by Mr. Detail » Sun Jan 12, 2020 10:37 am

Thank you abscate.
On your earlier post about a "torched vacuum hose/line". Did anyone ever state which specific vacuum hose went bad?

User avatar
RickHaleParker
Posts: 3428
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 409 times
United States of America
RickHaleParker

Re: Stalling Out

Post by RickHaleParker » Sun Jan 12, 2020 11:27 am

Mr. Detail wrote:
Sun Jan 12, 2020 5:29 am
RHP, would the ECT sensor really cause the engine to completely cut out like it did several times?
Faulty readings from the ECT can cause the ECM to miscalculate the air-fuel mix.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

User avatar
abscate
MVS Moderator
Posts: 19666
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 248 times
Been thanked: 805 times
Trinidad & Tobago
abscate

Re: Stalling Out

Post by abscate » Sun Jan 12, 2020 5:23 pm

Mr. Detail wrote:
Sun Jan 12, 2020 10:37 am
Thank you abscate.
On your earlier post about a "torched vacuum hose/line". Did anyone ever state which specific vacuum hose went bad?
I don’t think I named it , but I showed lots of pictures

:D
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

Mr. Detail
Posts: 347
Joined: Wed May 03, 2006 11:21 am
Year and Model: 2002 V70 N/A
Location: Newtown Square, Pennsylvania
Has thanked: 13 times
Been thanked: 2 times
United States of America
Mr. Detail

Re: Stalling Out

Post by Mr. Detail » Mon Jan 13, 2020 9:01 am

Is there a special socket I will need to loosen the old ECT sensor as the wire is still attached?
Not sure yet of that hex size.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post