FLAWLES Posted May 28, 2009 Share Posted May 28, 2009 right-e-o my auto trans plays up when its mega cold, doesnt want to select forward or reverse warp drive its been like this ever since i put a trans cooler on now when i put the trans cooler on i started the car up, let the engine and trans get warm while selecting 1 2 3 and D holding it in gear for about 2 to 5mins in each gear stoped the car put it back down on the ground, checked fulid levels and topped up again but nah its fine when its warm, but it takes a while for that to happen, cause you can sit there in the drive way and rev the tits of it ( with in reason ) and go no where any ideas? i should just ring sam lol Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted May 28, 2009 Share Posted May 28, 2009 did you add extra fluid to allow for the added capacity? Maybe a thermostat would stop your issues when cold by preventing fluid from circulating when cold. Quote Link to comment Share on other sites More sharing options...
xsspeed Posted May 28, 2009 Share Posted May 28, 2009 Have you got a thermostatic (i think thats what they are called) switch/valve on the cooler loop? So that it only opens up when temp reaches a certain level? Edit: Beaten Quote Link to comment Share on other sites More sharing options...
FLAWLES Posted May 28, 2009 Author Share Posted May 28, 2009 did you add extra fluid to allow for the added capacity?Maybe a thermostat would stop your issues when cold by preventing fluid from circulating when cold. that i did brew and the factory trans cooler set up ran directly into the radiator, this idea was jut to move the cooler away from the rad to aid with cooling, weather or not they have a factory thermostat in the lines i dont know, and would have to say maybe no they dont Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted May 28, 2009 Share Posted May 28, 2009 sounds like maybe the cooler is a little too cool maybe Quote Link to comment Share on other sites More sharing options...
xsspeed Posted May 28, 2009 Share Posted May 28, 2009 +1 the cooler in the radiator only has a couple of coils (generally) whereas your cooler (I'm guessing) has many more Quote Link to comment Share on other sites More sharing options...
FLAWLES Posted May 28, 2009 Author Share Posted May 28, 2009 mmm cooler is a 9 row i think of the top of my head but its tinny Quote Link to comment Share on other sites More sharing options...
fuel Posted May 28, 2009 Share Posted May 28, 2009 could it be the new cooler is some sort of restriction on the system so the internal oil pump isn't able to get the line pressure it needs to engage the solenoids/shift gears etc? and once it warms up the fluid is a bit thinner and flows just enough to be fine? have you tried bypassing the aftermarket cooler to see if it works fine again? also is this new cooler in series with the existing radiator trans cooler or have you bypassed that entirely and plumbed in the aftermarket one instead of the factory one? Quote Link to comment Share on other sites More sharing options...
FLAWLES Posted May 28, 2009 Author Share Posted May 28, 2009 mmm was thinking it may have been flow yip bypassed the factory cooler, didnt want to run in series as like i said it was in the bottom of the rad and wanted to take away as much heat soak as possible Quote Link to comment Share on other sites More sharing options...
fuel Posted May 28, 2009 Share Posted May 28, 2009 every single aftermarket cooler when new comes with instructions to run the cooler in series with the existing transmission cooler in the radiator. Quote Link to comment Share on other sites More sharing options...
FLAWLES Posted May 28, 2009 Author Share Posted May 28, 2009 really??? no shit???? also said instructions also tell you that it is safe to bypass the factory cooler so your point is? Quote Link to comment Share on other sites More sharing options...
fuel Posted May 28, 2009 Share Posted May 28, 2009 my point is it's obvious your aftermarket trans cooler is the problem and maybe you should revert to the factory one for now, until you can sort out the cause (either blocked flow, overcooling etc) Quote Link to comment Share on other sites More sharing options...
kyteler Posted May 28, 2009 Share Posted May 28, 2009 REOW! Sounds to me like it needs a thermo switch of some description, alternatively plumbed in series. Doesn't sound like it would be a big drama regardless. Can't imagine it would hurt to have it in series. Quote Link to comment Share on other sites More sharing options...
Crownin_Round Posted May 28, 2009 Share Posted May 28, 2009 Box could just be fucked, put motor oil in it.. the thicker oil will make sure it selects gears each and everytime! tried and tested! Quote Link to comment Share on other sites More sharing options...
Spencer Posted May 28, 2009 Share Posted May 28, 2009 REOW!Sounds to me like it needs a thermo switch of some description, alternatively plumbed in series. Doesn't sound like it would be a big drama regardless. Can't imagine it would hurt to have it in series. Na they should still shift ok bone cold (like still be pretty smooth in -ve temperatures), I doubt it is a fluid temperature issue. More likely a flow issue or the cooler had crap in it and your valve body isn't happy about it. Revving it and it not going anywhere sounds like a fluid flow issue to me remove that cooler asap that's the obvious first step to try sort the problem Quote Link to comment Share on other sites More sharing options...
xsspeed Posted May 28, 2009 Share Posted May 28, 2009 fuck wrote a post and then window cleared when I hit submit/maybe I did cancel anyway If its a resistance problem, setting the cooler in series with the radiator one will only increase the resistance. Agree with spencer re taking coil off and trying again with 'stock' arrangement to make sure that the problem is or isnt still there. Probably a good idea to give the gbox oil a replace as well, just incase there is some crap floating around. I would then check your oil viscosity, then flow, and then maybe look at the thermostat switch. Quote Link to comment Share on other sites More sharing options...
mikuni Posted May 28, 2009 Share Posted May 28, 2009 Would there be any kind of sensor or switch in the old radiator trans cooler that is now getting by passed that could affect it in some way? Quote Link to comment Share on other sites More sharing options...
FLAWLES Posted May 29, 2009 Author Share Posted May 29, 2009 nah in the factory oil cooler theres no temp sensors there. what i think is the go is this..........having thought about it with some food in my tummy the factory cooler is at the bottom of the rad ( inside it ) i have added another 300mm of hose on the inlet and out let ports to connect the new cooler up to the old trans lines, and to this all off its mounted higher up on the outside of the radiator so what i think the cause and effect is that after time the transfulid is slowy draining back into the trans, cause remember i drive this car about 2 days a month at the mo,so on stat up it has to move the fulid back up the lines to the cooler and then back to the trans with out knowing on how fast the pump flows on the a/t i dont know how fast the fulid flows adding the new cooler in series with the old cooler in my mind would most likely do the same things Quote Link to comment Share on other sites More sharing options...
Spencer Posted May 29, 2009 Share Posted May 29, 2009 nope, fluid would fill that arrangement up in 2 sec at idle not an issue Quote Link to comment Share on other sites More sharing options...
xsspeed Posted May 29, 2009 Share Posted May 29, 2009 Potentially added too much head to the pump, but I doubt it.EDIT: actually this is highly unlikely, as we are talking 50cm ish Still seems odd that you cannot slelect gears when you start, as even in normal setup the oil will still be just as cold. Quote Link to comment Share on other sites More sharing options...
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