Jon White Posted April 1, 2008 Share Posted April 1, 2008 Anyone know anything about autoboxes? The 4speed ZF on my RRC seems to have lost 4th gear all of a sudden. 1st - 3rd all work as they should, and change up and down fine, but it will never shift into 4th. I've checked that it is in D before anyone asks! Anyone got any bright ideas of anything I can check/change or is it just find another autobox and swap it out time? Theres no mention of losing 4th on the FAQ's on ashcrofts site, so I looked it up on Rave. Rave says no 4th gear is either a stuck 3rd/4th shift valve or a broken no4 clutch. Is there anything I can jiggle/poke/thump/worth a try? Cheers Jon Quote Link to comment Share on other sites More sharing options...
bishbosh Posted April 1, 2008 Share Posted April 1, 2008 Changing the oil might do something. Might make it worse though and make it stick in first (ask me how I know ) but if the box is toast it might be worth a punt....? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted April 1, 2008 Share Posted April 1, 2008 Has it got enough oil in it? Quote Link to comment Share on other sites More sharing options...
BogMonster Posted April 1, 2008 Share Posted April 1, 2008 I thought this was going to be an April Fool "I can't get 4th gear on my Torqueflite auto box" Quote Link to comment Share on other sites More sharing options...
Jon White Posted April 1, 2008 Author Share Posted April 1, 2008 Thanks chaps - the missus says she checked the fluid earlier this week but I'll check it again as I dont beleive her! The fluid in it was changed about 10K ago when a new torque conveter was fitted. Its kinda sounding like the box is toast then....... Sigh.......anyone know how much one weighs? Looks like a piggy of a job to change! Jon Quote Link to comment Share on other sites More sharing options...
DaveSIIA Posted April 1, 2008 Share Posted April 1, 2008 80kg was a figure that has been mentioned. I've been wrestling with one this morning (already on the bench) and it certainly feels it. Quote Link to comment Share on other sites More sharing options...
Jon White Posted April 1, 2008 Author Share Posted April 1, 2008 Ouch! That sounds like fun then! Thats alot more than an LT77! I reckon one of them is about 40kg odd! Is there any worth in me dropping the vavle block out of the bottom of the box and checking for stuck valves as I can do that without taking the box out? I was kind of reckoning I've got nothing to lose as the box is toast otherwise anyway.... Jon Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted April 1, 2008 Share Posted April 1, 2008 the box is toast This is excellent news! I'm just about to (4 weeks away) rebuild mine, so you can be the guinea pig. Quote Link to comment Share on other sites More sharing options...
Jon White Posted April 1, 2008 Author Share Posted April 1, 2008 Squeak squeak! Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted April 1, 2008 Share Posted April 1, 2008 Drive around with 3 gears for a month so I can peek over your shoulder when you fix one up and copy all your mistakes. Al. Quote Link to comment Share on other sites More sharing options...
steve_d Posted April 1, 2008 Share Posted April 1, 2008 Is the kickdown cable still in place and adjusted? Don't know if it makes a difference but at least it is something on the outside you can get too. Steve Quote Link to comment Share on other sites More sharing options...
paintman Posted April 1, 2008 Share Posted April 1, 2008 You might find it worth giving Ashcroft a ring. They are usually very helpful. Quote Link to comment Share on other sites More sharing options...
darthdicky Posted April 1, 2008 Share Posted April 1, 2008 When you say you're sure it's in D, are you really sure? The cable on my dads old car stretched, so you weren't always sure where it was, and would have to move it further to get the right gear (eg. 3 or N to get D). Worth starting in 1st and changed up through the gears to check it. Richard Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted April 1, 2008 Share Posted April 1, 2008 I've got a ZF autobox here that I want rid of Quote Link to comment Share on other sites More sharing options...
Jon White Posted April 1, 2008 Author Share Posted April 1, 2008 Hmmmmmmm thanks chaps. I will check the linkage and the kickdown cable first just in case its something as stupid as that! Failing that then i think I'll drop the valve block off the bottom and have a looksee - I've got nothing to lose as the box is scrap otherwise! I've checked the rave cd and it says:- No 4th gear D selected:- 4th to 3rd downshift valve stuck or 3rd to 4th upshift valve stuck or Clutch brake 4 failure I'm kinda hoping that as it came on all of a sudden its gonna be a stuck valve, as I'd be surprised if you'd manage to burn out the 4th gear clutches - much more likely to do the 1st gear one! I'll have a look as it tomorrow night with a bit of luck. Jamesmoree - you have a pm. Cheers Jon Quote Link to comment Share on other sites More sharing options...
bobtail4x4 Posted April 1, 2008 Share Posted April 1, 2008 The wifes Rangie did that, turned out to be a leaking pipe to the oil cooler, topping up effected a repair until I got a new pipe. Quote Link to comment Share on other sites More sharing options...
Jon White Posted April 1, 2008 Author Share Posted April 1, 2008 Hmmmmmmmm thats worth a look! It is leaking oil at the moment, but I'd assumed it was dribbling out the bottom of the timing cover (its a tdi). Cheers Jon Quote Link to comment Share on other sites More sharing options...
Cheesy Posted April 2, 2008 Share Posted April 2, 2008 Slightly off topic but can someone tell me the distance from the front of the bellhousing (back of the block) to the back of the flexplate (torque converter side)? Building an 88 hybrid but havent got a V8 to measure from, using a 4l straight six Thanks Quote Link to comment Share on other sites More sharing options...
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