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Engine Stalls

Tiny
493DART
  • MEMBER
  • 2001 MITSUBISHI GALANT
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
My car has a very consistent stall. Starts up runs perfect until it warms up. Then idles down and stalls Will start back up and run for three seconds then stalls.

if it sits a few hours it will start back up and run for four minutes, repeat. It is not random at all.

New parts: cam sensor, crank sensor, plugs, timing belt tensioner, coolant temperature sensor, cam sensor pigtail.

Code 0340 cam sensor. I have tried two new sensors. Swapped the main ECM computer under the dash. It has got to be something to do with the temperature. Runs absolutely perfect until it warms up.
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Sunday, May 5th, 2019 AT 9:38 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
Hello,

It sounds like the timing belt my have jumper a tooth or the engine coolant sensor needs to be replaced. Here are two guides to help walk you through the steps with diagrams below to show you on car:

https://www.2carpros.com/articles/coolant-temperature-sensor-cts-replacement

and

https://www.2carpros.com/diagrams/mitsubishi/galant/2001

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Monday, May 6th, 2019 AT 3:55 PM
Tiny
493DART
  • MEMBER
  • 3 POSTS
Not timing belt. Engine runs perfect until it warms up, new tensioner also. If it was off a tooth, it would run horrible at any temperature. Replaced coolant temperature sensor.
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Monday, May 6th, 2019 AT 5:20 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
Did that fix it? I was thinking timing belt due to the camshaft code but if it runs good should be fine.
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Tuesday, May 7th, 2019 AT 2:08 PM
Tiny
493DART
  • MEMBER
  • 3 POSTS
No.
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Tuesday, May 7th, 2019 AT 6:41 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
I have seen oxygen sensor heater short out when hot and stall the engine. Can you disconnect the sensor and try it again?
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Wednesday, May 8th, 2019 AT 10:52 AM

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