Okay, I have determined that the source of the smoke is indeed the tranny. But I have a question for ya'll.........Why does it only vent in 3rd gear? I can hammer on it in 1st and 2nd, and it never smokes, catch 3rd, and give it a little, it vents and I get SMOKE. Also, can someone go into detail (meaning, give me dummy directions) on how to fix this venting problem? I would really appreciate any advice on how to solve the problem. The motor is running strong, but if I get up around 80, and punch it, it vents. Motor will be pulling hard, all pressure guages okay, and then the smoke starts. Also, is there a place on the tranny where I can put a tranny temp guage, and a tranny pressure guage? Or is there such an animal? Sorry this is so long, I just need help. Thanks, Country
Well, i'll do my best! First of all, is the tranny venting from the top (where the vent is), or is it leaking from one of the side covers? For that matter...is it leaking down on your headers, or just blowing smoke out the vent? I guess i'll need to know all that before i go much further. Transmission temperature gauges can be installed in two places: some in the oil pan, and some install into aftermarket filters (they are remote filters, usually oil filters, which mount in the cooling lines). Either way, you have to get the one that is made for where you want to mount it. I have never seen a transmission pressure gauge that could be mounted inside the car (although i wouldn't be surprised if they make them). Transmission pressure is usually checked with the car off the ground, in a special passage on the driver side that is blocked off by a set screw. Usually you only need to know pressure if you are troubleshooting a shifting issue, etc. If you are just getting smoke out your vent, chances are that your bands or frictions are getting worn out, and are cooking your fluid. It's also possible something is preventing your servos (the single cover on each side) from putting enough pressure on the band. Check your fluid for smell--smell burnt? Look brown? If it does, you might want to just take your car to a shop, or pick up a haynes book on the c4's. They're relatively easy to rebuild, if you want to risk it.
Ok Preston I have ?????? Is your tranny venting smoke or fluid?? ie...... is the top of the tranny wet?? very important to know......either way you are most likley looking at an overhaul......if it is smoke somthing is slipping........if it is fluid(spraying on the exhaust) then it is cross bleeding presure......which could be any where from a valve body problem to a cut lip seal to a cracked case or piston(tranny).....If you can give a little more info I might be able to help more.......most of the time it is a lip seal.......so when the direct drum applies the fluid pushes past and creats a cross bleed..........just a few thoughts....as always If ya want email me or call
Okay Tranny is about4 1/2 months old, from autozone. It is venting fluid which hits my exhaust pipes and the fluid hitting the hot exhaust causes the smoke. I can't tell where the leak/venting is occuring, but I think it is where the vent is on top. It is toward the rear of the transmission, if that helps. (Car is so low, I can't tell, and I am working so much that I can't take it anywhere and put it on a lift) It never vents in 1st or 2nd, just 3rd gear. And it has no rhyme or rythem to it. Sometimes it's when I am gunning it, and sometimes I am just cruising(Below 3,000 RPM's) Very confusing to me. Thanks ya'll. If you need more info, let me know, and I really appreciate everything. Thanks, Country
mine does the same starting about 6000 rpm in high and robert just rebuilt mine i have been told thats just a c4 Here she Blows
Country; had a similar problem a few months ago. Took my car in to a friend to put a cooler on the trans. He overfilled it, not by much, but enough to blow smoke big time, and cause me to put the car down for a few weeks. To fix it, I pulled the pan and drained all the fluid I could out of it. I made sure the fluid left in was nice and clean, and cherry red. When filling the trans back up, I was very carefull to warm the car up, and with the rear wheels up, moved it through each gear and reverse before adding fluid. I haven't had a problem since. Overfilling these things is much worse than underfilling, so take a look and see. And, like the others said, see where the leak is coming from. If not the vent, then some fixing is probably in order. Good luck, and let us know. Earl
country, i agree with earl, it sounds like a overfill to me. not to say that an overfill might not have blown a seal and now you have a seal problem. is the fluid low/overfilled. if it was the correct level to start with and with all this blowing it should be low.jmo...frank...:bananaman :bananaman
If all else fails, don't be afraid to take it back to Autozone! Better now, than when your warranty wears out.
Drove today....... No venting???:confused: ??? I drove it like I was scared of it for awhile.........and then ran the dog mess out of it. Never vented. Level was above the 2 holes in the dipstick, and barely coating the top one (barely), Would adding some of that Lucas stuff help out? Or would that be a big No-NO? I'm thinking that the next time it does it, I'll try to take off work a bit early, and stop at some shop to raise it on the lift. If I can get off early......... Thanks for the input everybody. Country
Blowing out the vent ? If the fluid level is correct and it just does it in third gear under power , most likely direct clutch is starting to slip , however , these transmissions can push fluid out the vent under heavy G-force acceleration and at high RPM's [ even if it's not slipping ] especially in cars that start running 11's and faster ,a fix usually requires removal of the stock vent pipe and cap , then threading the hole with a 1/8 n.p.t. tap , installing a 90 degree elbow , 5/16 hose nipple , then run 5/16 hose up along top the trans , you can put one of those inline chrysler type fuel filters on the end of it and fasten it somewhere near the top of the firewall , this allows a small resivoir for fluid vapours to collect then drain back after it the car sits , Hope this helps
