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1990 Chevy Suburban

Tiny
BUICKMANW
  • MEMBER
  • 1990 CHEVROLET SUBURBAN
Engine Performance problem
1990 Chevy Suburban V8 Two Wheel Drive Automatic

engine dies after water temp guage shows 195 but will start up immeadtly and runs ok for a 15 min time period has fire to plugs and hot wire to coil shows ok with test light fuel is going to the throotle body only happens when engine gets hot
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Saturday, September 27th, 2008 AT 10:50 AM

7 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Check engine light on?
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Saturday, September 27th, 2008 AT 10:53 AM
Tiny
BUICKMANW
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No
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Monday, September 29th, 2008 AT 3:30 PM
Tiny
MERLIN2021
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Get an ohm meter and test the ECT(engine coolant temp) sensor, should be over 10,000 cold and as it warms up, at 195 it should read 177 ohms.
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Monday, September 29th, 2008 AT 4:34 PM
Tiny
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Tuesday, September 30th, 2008 AT 6:48 AM
Tiny
BUICKMANW
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Replaced coolant sensor didnt fik proublem
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Tuesday, September 30th, 2008 AT 6:50 AM
Tiny
MERLIN2021
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I did say "test", not replace, you want to prove a bad part before you change it.
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Tuesday, September 30th, 2008 AT 1:11 PM
Tiny
MERLIN2021
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Try unplugging, not replacing. The 02 sensors, these come online after the engine warms up, EGR valve too! TEST only, if it proves to be on of them then replace it.
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Tuesday, September 30th, 2008 AT 1:13 PM

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