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Cold transmission behavior?

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luketrash
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Joined: 15 Oct 2006, 16:23
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Location: Ames, Iowa USA
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Post by luketrash »

Well, it was finally one of those single digit mornings. It was 9F (-13C) degrees on my way to work according to the temperature gauge in my car (and the sign at the bank said 8.)

As I left my driveway onto the highway I live on, the car would not shift out of first gear. I was only driving about 30mph, realizing this fact, so I turned off onto a side road to investigate. To make the problem go away, I shifted into '3' and it downshifted. Then I put it back into 'D' and it started working properly.

Every automatic I've had will hold gear past normal RPM when it's really cold like this, but this didn't seem normal to me.

Thoughts?
'94 Gunmetal Gray 855 2.4L 100% stock. This is Volvo #7.

rbrach
Posts: 12
Joined: 11 Oct 2006, 12:46
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Location: Too far north but still in the US

Post by rbrach »

PNP swithch? do have one of those like my 98 does? if so you can try (with the car not running) shifting from park all the way to L up and down about 20 times rapidly, this i have heard can sometimes clean up the copper contacts in the PNP switch, just a thought.
Last edited by rbrach on 30 Nov 2006, 12:16, edited 1 time in total.
98 S70 t5

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billofdurham
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Joined: 02 Feb 2006, 15:31
Year and Model: 855, 1995
Location: Durham, England
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Post by billofdurham »

Wrong transmission fluid.

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.

luketrash
Posts: 421
Joined: 15 Oct 2006, 16:23
Year and Model:
Location: Ames, Iowa USA
Been thanked: 2 times

Post by luketrash »

It's got the PNP switch which was acting up last week. I did the 'ratchet' cleaning method.

The orange upshift arrow was not flashing today.

I hope I have the right tranny fluid in there ;) It's just generic stuff, but to spec.
'94 Gunmetal Gray 855 2.4L 100% stock. This is Volvo #7.

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