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1990 Volvo engine keeps shutting off

Tiny
KREED02
  • MEMBER
  • 1990 VOLVO 740
  • 6 CYL
  • FWD
  • AUTOMATIC
1990 740 Volvo non-Turbo engine keeps shutting off. If I let sit for 30 minutes or more will start back up. What is causing this?
Wednesday, May 18th, 2011 AT 1:27 PM

5 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
A defective ignition module.
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Wednesday, May 18th, 2011 AT 1:46 PM
Tiny
KREED02
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  • 3 POSTS
Where is the ignition module located? And do you think maybe it could be the fuel pump? Thanks!
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Wednesday, May 18th, 2011 AT 2:00 PM
Tiny
MMPRINCE4000
  • MECHANIC
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Under left side of dash, above steering column.

Could also be a bad relay.
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Wednesday, May 18th, 2011 AT 2:05 PM
Tiny
KREED02
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So the first thing I should change in the Iginition Module, then the Relay? Then if problem still exists should I do Fuel Pump? Thanks, Kris
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Wednesday, May 18th, 2011 AT 2:10 PM
Tiny
MMPRINCE4000
  • MECHANIC
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Check relay first, when ign. It turned on it should click.

NEVER replace a fuel pump unless you confirm low pressure with a mechanical gauge.

The symptoms you dscribe are classic to an ignition module.
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Thursday, May 19th, 2011 AT 1:46 PM

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