1997 Vauxhall Sintra Engine running cold

Tiny
YAN
  • MEMBER
  • 1997 VAUXHALL SINTRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
I have a Vauxhaul Sintra 3.0L V6. The heater inside does not produce much in the way of heat. The temp gauge has a range of 40 - 125 deg C. The reading when driving only shows around 60 deg, a quarter of the way up the scale. I have fitted a new thermostat but the engine running temp still seems low at only a 1/4 of the temp gauge. If left idling for a long period of time the temp reaches 100 deg but once I start driving the temp drops back down. Any ideas?
Tuesday, January 12th, 2010 AT 9:05 PM

3 Replies

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
Replace coolant temp sensor ! Are the cooling fans on radiator running all/most of the time?
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Wednesday, January 13th, 2010 AT 8:43 PM
Tiny
YAN
  • MEMBER
  • 2 POSTS
Hi, Thanks for your reply. The fans do not come on when idling after a long run. The temp switch, in my opinion, seems to work fine. The cars running temp is low as when I put on the heater in the car on I have a poor response with heat as well.
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Saturday, January 16th, 2010 AT 7:13 AM
Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
I would replace the water pump. Could be giving bad circulation !
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Saturday, January 16th, 2010 AT 5:04 PM

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