1993 Volvo 940 CAR STALLS WHEN DRIVING

LNOLAN

MEMBER
1993 VOLVO 940
4 CYL
2WD
AUTOMATIC
145,000 MILES

THE CAR STALLS WHEN DRIVING (IT SEEMS TO HAPPEN ONLY IN WET WEATHER). I HAVE ALSO NOTICED IT SEEMS TO BE WHEN DRIVING DOWN A HILL. THE ENGINE STOPS RUNNING WHILE DRIVING. EVERYTHING STOPS WORKING. ENGINE WON'T TURN OVER IT JUST CLICKS AND IS DEAD. IT WON'T RESTART. NEW BATTERY HAS BEEN INSTALLED AND CHARGING SYSTEM CHECKS OK. VOLVO DEALER THINKS IT COULD BE THE COMPUTER. WHAT DO YOU SUGGEST.

5 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi LNOLAN,

Thank you for the donation.

No, I don't think it is the computer. If it is the computer, yu would still be able to crank the engine.

Since it stalls at intermittently, the most likely fault would be the ignition switch. A faulty switch would cut power source to the engine and starter.

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Monday, September 21st, 2009 AT 3:39 AM

BENJAMINCOMP

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Does it just turn off out of no where?

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Monday, September 21st, 2009 AT 11:48 PM

KHLOW2008

MECHANIC
41,815 POSTS

Yes, a fauty ignition switch would cause power supply to be disrupted and when this happens, engine would just stop.

When problem occurs, check if the gauges are registering, dash indicators comes on, etc. If no, the switch is the prime suspect.

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Tuesday, September 22nd, 2009 AT 12:20 AM

BENJAMINCOMP

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My car did the same, and it was a sensor that was causing the problem.

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Tuesday, September 22nd, 2009 AT 12:48 AM

KHLOW2008

MECHANIC
41,815 POSTS

Yes, it is possible for the crank angle sensor to cause that as well. But you would be able to crank the engine with no starting. In this case, cranking was not possible.