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fake overheating? 1994 850

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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gobosox
Posts: 2
Joined: 7 February 2006
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fake overheating? 1994 850

Post by gobosox »

i was driving my car on a 100 or so mile trip to NH when the temperature gauge in my 1994 850 sedan suddenly spiked into the red. It stayed there and would not go down. I pulled over and left the car off for 3 hours, and when i turned it back on, still red. I think this is a problem simply with the sensor, because nothing mechanically seemed wrong with the car. It happened once before but went back down, i took it to my mechanic and he found nothing wrong. Does anyone know what this could be, or whether or not it could be fater. (all coolant levels were fine and no fuses were out, no warning lights lit)

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billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

It is possible that your coolant temperature sensor is faulty.

Check the fault codes using Socket 2 of Module A. If code 1-2-3 comes up that is the problem indicated.


Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

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