Tom Posted June 13, 2005 Report Share Posted June 13, 2005 I had transmission trouble recently and I'm hoping that one of you can tell me whether to expect more of it ... I was in low gear, climbing a steep hill, on a 90+ degree day, A/C on full blast, after idling 15 minutes in traffic. Too much heat ... the transmission came out of gear, the warning light came on and the engine just spun as though it was in neutral. After pulling off and letting it cool for 10 minutes it worked fine. The code was 313, "Faulty signal from gear position sensor". After resetting the code, I've put 350 miles on the car without any further difficulty or codes, but I haven't let it get too hot. So here's the question: was this an isolated incident or is it an indication that the tranission is on the way out? Some expert advice would help me decide whether this car is worth doing the evaporator or not. It's a '94 850 wagon, NA, automatic, with 152 K.Thanks to all,Tom Link to comment Share on other sites More sharing options...
Chris_R Posted June 13, 2005 Report Share Posted June 13, 2005 Have you since checked the level and condition of your fluids? Don't forget that the tranny uses the radiator for cooling... If your anti-freeze levels are low then that will make matters worse. You may just need to flush the tranny. Perhaps adding a tranny cooler (if you do a search there are SEVERAL topics on the subject here) would help too. Link to comment Share on other sites More sharing options...
Noahkk19 Posted June 13, 2005 Report Share Posted June 13, 2005 I'm guessing you should be fine...A long time ago my car would get the same code during the summer when my fan wasn't comming on and I was either over grass or riding very slow in some serious heat...Got the fan fixed and it went away, deffinitely not normal though <_< Link to comment Share on other sites More sharing options...
MrWinkey Posted June 13, 2005 Report Share Posted June 13, 2005 Actually Tom that's the first time I have seen the reverse on your condition. Usually it's when it's very cold out you get the 313 code. Seems like in October and November I get a run on them, which is a PNP switch and not a major internal fault. I would clear codes and run it..but you can almost suspect a future PNP switch replacement. Well with the evap out I must say "Don't sweat it" sorry had to say it ;) Link to comment Share on other sites More sharing options...
Tom Posted June 14, 2005 Author Report Share Posted June 14, 2005 Actually Tom that's the first time I have seen the reverse on your condition. ←Trend-setters, that's us. Thanks for the reassurance and for pointing out the PNP switch which had never occurred to me. Chris_R, I did check the fluids and they were all fine ... transmission oil is two months old.Tom Link to comment Share on other sites More sharing options...
MrWinkey Posted June 15, 2005 Report Share Posted June 15, 2005 Yeah your a trend setter alright :lol: Link to comment Share on other sites More sharing options...
starfish Posted June 15, 2005 Report Share Posted June 15, 2005 I had transmission trouble recently and I'm hoping that one of you can tell me whether to expect more of it ... I was in low gear, climbing a steep hill, on a 90+ degree day, A/C on full blast, after idling 15 minutes in traffic. So here's the question: was this an isolated incident or is it an indication that the tranission is on the way out? Some expert advice would help me decide whether this car is worth doing the evaporator or not. It's a '94 850 wagon, NA, automatic, with 152 K.Thanks to all,Tom←Tom, What???? were you thinking? I can't think of a better way to fry a trans than this. Incredible! I'm sure your transmission hopes that this was an isolated incident! Flush the fluid, and engage the brain before selecting the gear! Link to comment Share on other sites More sharing options...
Tom Posted June 17, 2005 Author Report Share Posted June 17, 2005 Tom, What???? were you thinking? I can't think of a better way to fry a trans than this. Infreakincredible! I'm sure your transmission hopes that this was an isolated incident! Flush the fluid, and engage the brain before selecting the gear!←Hi Starfish - I don't believe that the trip I described is much of a way to fry an automatic transmission. Granted I heated things up ... but standard hot-weather drive cycles in automotive development, which I used to do for a living, are quite a bit more demanding than that. My outing the other day is commonplace all over much of the US - nobody would be selling cars in this country if it ruined transmissions. I'll put in a PNP switch this weekend - I believe that Mr. Winkey has it right.Tom Link to comment Share on other sites More sharing options...
Bay13 Posted June 17, 2005 Report Share Posted June 17, 2005 I'd do a trans flush if the fluid is brown or smells burnt. I'd also replace the PNP. Anytime you have a temp change cold or hot and the PNP is boarder line for making correct contact, then you stand the chance of setting a PNP code 313 and telling the Trans Module you are in a gear you are not, or confusing it with incorrect data.http://www.volvospeed.com/Repair/pnpswitch.php Link to comment Share on other sites More sharing options...
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