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overheat

A mid-size luxury crossover SUV, the Volvo XC90 made its debut in 2002 at the Detroit Motor Show. Recognized for its safety, practicality, and comfort, the XC90 is a popular vehicle around the world. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America). P2 platform.
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jerford05
Posts: 2
Joined: 15 February 2020
Year and Model: 2007 xc90
Location: buffalo ny

overheat

Post by jerford05 »

During the warmer months, when I run the a/c driving longer distances on the thruway
the engine starts to overheat also the a/c seems to take a little while to get cold. I didn't know
if these 2 problems were related.
any feedback would be great. Thanks

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RickHaleParker
Posts: 7129
Joined: 25 May 2015
Year and Model: See Signature below.
Location: Kansas
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Post by RickHaleParker »

Possible causes:
1. Failing AC compressor. (Excess engine load).
2. Inefficiency in the cooling system. ( clogged radiator, fans not working, water pump going out)
3. Faulty engine coolant temperature sensor.

At idle, does the engine drag down when the AC compressor kicks in?
⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.

jerford05
Posts: 2
Joined: 15 February 2020
Year and Model: 2007 xc90
Location: buffalo ny

Post by jerford05 »

no, actually I don't even here the compressor click on when I turn it on

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June
Posts: 2275
Joined: 4 May 2016
Year and Model: 2004 S80 T6,1991 740
Location: Arkansas
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Post by June »

Check the condenser fins for mud, bugs, or any blockage. If you have never cleaned the condenser go to a power wash station and spray with aluminum wheel cleaner then pressure wash thoroughly. I do mine twice a year after each love bug Season. In 16 years it has never harmed my condenser and the intercooler and radiator are sandwiched behind it so good airflow is important. June
My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned

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RickHaleParker
Posts: 7129
Joined: 25 May 2015
Year and Model: See Signature below.
Location: Kansas
Has thanked: 8 times
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Post by RickHaleParker »

^^^ Next do what June say ^^^
⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙⸙
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.

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