Dies on the throttle

Alpine · Oct 23rd, 2020, 17:55

Started playing up, when the engine is ticking over at idle it will die (and cut out) if I touch the throttle.

I changed the coolant temp sensor a year ago, so I doubt its connected to that.

Any ideas?

Volvofreak2 · Oct 23rd, 2020, 19:01

Hej Phil,
sounds to me like "antenna ring" ( dont't know how this part is called in Englisch). This ring is around the ignition switch and is sending the code from the key to the engine immobilizer. When this ring is defekt, the engine starts and get's cut off immediately, just as you describe. To check, start the engine and when it's cut off, turn the key 180 degrees and try again. If this works and the engine runs after a few tries, it's the ring.

Gernot

Alpine · Oct 23rd, 2020, 20:29

ok, thanks. But it doesn't die immediately. It will sit on the drive idling, but when I touch the throttle to move off it will splutter and cut out.

4x4 · Oct 23rd, 2020, 20:32

Quote:

Originally Posted by Alpine

...but when I touch the throttle to move off it will splutter and cut out.

Check for vacuum leaks

Alpine · Oct 23rd, 2020, 23:19

thanks, good idea, will do

RollingThunder · Oct 24th, 2020, 09:42

Try disconnecting the MAF.

I had a 940 a few years ago that idled fine, and I could even pull away from rest if I was very - very - gentle on the accelerator, but give the pedal a prod and it would die. It was the MAF in my case, By disconnecting it, the engine ECU runs on default settings and the engine ran much better. Its a quick and easy test to see if the MAF is the culprit.

Oct 23rd, 2020, 17:55	#1
Alpine Senior Member Last Online: Apr 13th, 2024 08:14 Join Date: Jan 2012 Location: Leeds	Dies on the throttle Started playing up, when the engine is ticking over at idle it will die (and cut out) if I touch the throttle. I changed the coolant temp sensor a year ago, so I doubt its connected to that. Any ideas? __________________ Phil '98 V70 2.5T (manual '99MY)

Oct 23rd, 2020, 19:01	#2
Volvofreak2 Member Last Online: Aug 1st, 2021 08:21 Join Date: Feb 2019 Location: Landshut	Hej Phil, sounds to me like "antenna ring" ( dont't know how this part is called in Englisch). This ring is around the ignition switch and is sending the code from the key to the engine immobilizer. When this ring is defekt, the engine starts and get's cut off immediately, just as you describe. To check, start the engine and when it's cut off, turn the key 180 degrees and try again. If this works and the engine runs after a few tries, it's the ring. Gernot __________________ tack för hjälpen! current: V70 I, B5254T MY99, TME exhaustpipe, 850 R MY96, 850 GLT 20V B5254S, Mj 94 previous: V70 I, B5252S, V70 I, B5254S2, killed by a parcel service driver

Oct 23rd, 2020, 20:29	#3
Alpine Senior Member Last Online: Apr 13th, 2024 08:14 Join Date: Jan 2012 Location: Leeds	ok, thanks. But it doesn't die immediately. It will sit on the drive idling, but when I touch the throttle to move off it will splutter and cut out. __________________ Phil '98 V70 2.5T (manual '99MY)

Oct 23rd, 2020, 23:19	#5
Alpine Senior Member Last Online: Apr 13th, 2024 08:14 Join Date: Jan 2012 Location: Leeds	thanks, good idea, will do __________________ Phil '98 V70 2.5T (manual '99MY)

Oct 24th, 2020, 09:42	#6
RollingThunder Grumpy Old Git Last Online: Apr 19th, 2024 09:16 Join Date: Dec 2004 Location: South Yorkshire View Photos By: RollingThunder	Try disconnecting the MAF. I had a 940 a few years ago that idled fine, and I could even pull away from rest if I was very - very - gentle on the accelerator, but give the pedal a prod and it would die. It was the MAF in my case, By disconnecting it, the engine ECU runs on default settings and the engine ran much better. Its a quick and easy test to see if the MAF is the culprit. __________________ S40 2.4i '07 Japanese import '96 850R - https://www.volvoforums.org.uk/showthread.php?t=312484 Ex Danish Embassy '96 940 GLE LPT - https://www.volvoforums.org.uk/showthread.php?t=326071

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