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1996 850R Thermostat stuck open?

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Denton
Posts: 17
Joined: 24 Feb 2013, 16:45
Year and Model: 1996 854R
Location: Atlanta, GA

Post by Denton »

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This is at 50 MPH steady cruise, been driving for 10+ miles. Temp needle goes closer to middle at low speeds and in traffic.

Bad MPG, average 18 MPG on 93 in mixed driving.

EDIT: I broke my boost gauge, yes the needle fell out. Maybe epoxy will work?

Parts guy said to replace this too
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cn90
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Year and Model: 2004 V70 2.5T
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Post by cn90 »

Get new thermostat and O-ring, search forum for the "stubborn" Torx bolts trick.

The ECT, recommended but not absolutely needed.
When it goes bad, the engine does not start when COLD (HOT is OK).
For $50, I guess you can replace the ECT, peace of mind.

I wrote the trick for ECT in forum.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

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rspi
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Year and Model: 850 T-5R Wagon
Location: Cincinnati OH
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Post by rspi »



'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
--------------------
Volvo's of past: '87 740 GLE, '79 262C Bertone, '78 264, 960's, '98 S70 GLT, '95 850 T-5R YellowVolvo Repair Videos

Denton
Posts: 17
Joined: 24 Feb 2013, 16:45
Year and Model: 1996 854R
Location: Atlanta, GA

Post by Denton »

Whoops, ECT. Thanks for the tips, I've got the OE blue box T-Stat and o-ring.

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