V70 wont start once warm - Page 2

zedhex · Jan 11th, 2024, 15:42

I have exactly the same problem on a 97 v70 2.0 petrol auto. I replaced the cam position sensor, crank sensor, water temperature sensor, distributor and leads, and it's still doing it.

The symptoms are identical - starts fine when cold, does not start when hot. Turning over just fine, but only for 5 or 6 seconds and then stops.

I've had a friend do a full scan on it, and the only error conditions were relating to the airbag, so I don't think that is going to be a cause.

vanno · Feb 27th, 2024, 10:58

My son had this problem with his 1997 S70 2.5 auto. Several garages tried to fix the issue and many suggestions were made including fuel, temp sensor, crank sensor, coil, plus others. The garage that fixed it simply changed the plug leads, distributor cap and rotor arm. Actually, inside the cap was disgusting. How the car was functioning was a minor miracle. This might not be your fix but worth a look.

capt jack · Feb 27th, 2024, 15:26

Idle Air Inlet Control Valve - if the car has one - could possibly cause the problems you're describing.

Relatively easy to remove and clean and then put back.

A dodgy camshaft sensor should throw a fault code.

Jack

CSCUK · Mar 3rd, 2024, 18:18

The fix for failing to start/rev once hot for my 1999 v70 2.5 petrol was to remove the distributor and clean the distributor and rotor arm contacts with the blade of a screwdriver.

It now revs correctly when hot. Prior to cleaning contacts the motor died as soon as the accelerator was pressed then struggled to start again while still hot, and only when cool again started reliably.

Hope this works on yours.

Jan 11th, 2024, 15:42	#11
zedhex New Member Last Online: Jan 28th, 2024 13:21 Join Date: Nov 2023 Location: St Neots	Did this ever get fixed? I have exactly the same problem on a 97 v70 2.0 petrol auto. I replaced the cam position sensor, crank sensor, water temperature sensor, distributor and leads, and it's still doing it. The symptoms are identical - starts fine when cold, does not start when hot. Turning over just fine, but only for 5 or 6 seconds and then stops. I've had a friend do a full scan on it, and the only error conditions were relating to the airbag, so I don't think that is going to be a cause.

Feb 27th, 2024, 10:58	#12
vanno Senior Member Last Online: Yesterday 23:18 Join Date: Sep 2011 Location: Kirkby in Ashfield, Nottingham	Hot start issue My son had this problem with his 1997 S70 2.5 auto. Several garages tried to fix the issue and many suggestions were made including fuel, temp sensor, crank sensor, coil, plus others. The garage that fixed it simply changed the plug leads, distributor cap and rotor arm. Actually, inside the cap was disgusting. How the car was functioning was a minor miracle. This might not be your fix but worth a look. __________________ 1997 V70 SE 2.5 Auto Petrol Non Turbo Estate

Mar 3rd, 2024, 18:18	#14
CSCUK Junior Member Last Online: Mar 3rd, 2024 18:34 Join Date: Nov 2020 Location: Chester	Fix for hot start fault on my V70 The fix for failing to start/rev once hot for my 1999 v70 2.5 petrol was to remove the distributor and clean the distributor and rotor arm contacts with the blade of a screwdriver. It now revs correctly when hot. Prior to cleaning contacts the motor died as soon as the accelerator was pressed then struggled to start again while still hot, and only when cool again started reliably. Hope this works on yours.

Feb 27th, 2024, 15:26	#13
capt jack VOC Member Last Online: Apr 20th, 2024 18:56 Join Date: Jun 2006 Location: Selby, North Yorkshire	Idle Air Inlet Control Valve - if the car has one - could possibly cause the problems you're describing. Relatively easy to remove and clean and then put back. A dodgy camshaft sensor should throw a fault code. Jack

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)