Gorrington 24 Report post Posted September 26, 2019 Gearbox judder... Noticed a gearbox judder, feels like running over a rough road for a few seconds. It's only done it a couple of times in the last three days, hopefully I can catch this problem before it gets really expensive.. I'm thinking maybe a filter and oil change for the box.?? Thanks. Quote Share this post Link to post Share on other sites
BozzaFC 300 Report post Posted September 26, 2019 (edited) Under what circumstances does it make the noise? Is it when changing gear? Or when under load? A simple trans service on those gearboxes can do wonders. Edited September 27, 2019 by BozzaFC Quote Share this post Link to post Share on other sites
Eagle 1662 Report post Posted September 26, 2019 Possibly torque convertor shudder. As above change the fluid and filter and reset transmission adaption. Ive had good results with Lubeguard for worn torque convertors along with the fluid change Quote Share this post Link to post Share on other sites
Gorrington 24 Report post Posted September 29, 2019 Seems its nothing to do with the transmission.. Had the car scanned, no codes for any transmission. However, got misfire on 1 and 2 which can cause the symptoms I noticed. Changed out the coils and plugs on those cylinders, still got the misfire. Car is pulling alright on the road, but when ticking over I blip the throttle there's a misfire.. At the same time as I rev the engine I can hear a big suck of air from somewhere, I'm thinking a vacuum leak.? Checked all the pipes etc, can't see any obvious damage to pipes etc. Saw on YouTube guys using brake cleaner, spray it around all pipes/gaskets etc, listen for different engine revs.. I'll try that next. Have you guys any suggestions as to other causes.? Thanks. Quote Share this post Link to post Share on other sites
B.M.W Ltd 950 Report post Posted September 29, 2019 Who scanned it ? Did they check metered air flow and check the CCV ? Quote Share this post Link to post Share on other sites
Gorrington 24 Report post Posted September 29, 2019 Just found this blue/black loose pipe not attached to anything the other end, but doesn't seem to be the cause of the sucking air sound.. BM World down in Papakura scanned the car.. Quote Share this post Link to post Share on other sites
Eagle 1662 Report post Posted September 29, 2019 That vacuum line should go the air injection valve below the MAF\intake boot. Never had much luck with spray testing myself, smoke tester is much better. Apart from what Glenn mentioned, intake manifold gaskets do fail on these, you can add the appropriate 2-3mm thick washer under the bolt head to help compress the gasket if they are leaking. Quote Share this post Link to post Share on other sites
Gorrington 24 Report post Posted October 20, 2019 Had a proper full scan of the car. Now no faults recorded, however the problem is getting worse.. Blip the throttle on tickover and you hear a big gulp of air, misfire, then revs OK.. While I'm driving at a steady speed the revs keep dropping by about 200 rpm then it picks up again to the original rpms, after a few seconds the revs drop again.. If I'm accelerating this problem doesn't seem to show itself. It's now started to be a bit indecisive about gear selection, dropping a gear only to change back up almost immediately... I've had it in two garages, neither can find the fault... Do you guys have any ideas.??? Thanks. Quote Share this post Link to post Share on other sites
BozzaFC 300 Report post Posted October 20, 2019 Gearbox issues don't always throw a code. If the gearbox hasn't been serviced for a while/not serviced ever then this should be done anyway. If it is gearbox related then you should notice a difference afterward Quote Share this post Link to post Share on other sites
Gorrington 24 Report post Posted October 21, 2019 Looks like it's the torque converter.. Quote Share this post Link to post Share on other sites
BreakMyWindow 1874 Report post Posted October 22, 2019 40 minutes ago, Gorrington said: Looks like it's the torque converter.. Yep, get it rebuilt. Quote Share this post Link to post Share on other sites
Gorrington 24 Report post Posted October 23, 2019 Job done, wasn't cheap.. Quote Share this post Link to post Share on other sites
nick496 268 Report post Posted October 23, 2019 Did it sort the issue? Quote Share this post Link to post Share on other sites
