Auto gearbox issue after head gasket failure, Auto gearbox issue after head gasket failure Options

[davewuyts]

Hi there everyone - I just need some collective wisdom from all you wise ones out there.
I have had a traumatic month or so with my auto gen6 JDM ST202 convertible. After carrying out several repairs on the roof etc I was looking forward to the warmer weather when the head gasket went, along with a couple of oil seals. A bit of a mess.

So, this being beyond me, I put it into my faithful garage who I've been going to for years. It was returned to me a couple of days ago, all seemed fine and I seemed to have gained a bit of torque from before!

However, now I have it back, it's driving nice APART FROM the other day it suddenly slipped into neutral at the lights, the rev counter suddenly shot up as it lost the resistance of holding the car on the brake.. I've also noticed an occasional slight delay in picking up from a standing start. 98% of the time it's fine. I can't see anything obvious, there are no leaks including from the auto transmission fluid.

Before I go back to chat to the garage (who I get on well with) I want to just establish whether anything in the Head Gasket Work might affect the gearbox in any way. Can't imagine it myself but thought it was worth a heads-up here.

Dave

[SwissFerdi]

Make sure they do the change correctly, as the only proper way to go about it are several flushes. What I mean by that is, the proper procedure is to drain about half of the existing transmission fluid, then top up with new fluid. Drive and then repeat, draining and refilling twice more. After three times the fluid should be mostly new. Like mentioned above, if all of the fluid is replaced at once the clutch packs might slip.

This post has been edited by SwissFerdi: May 18, 2016 - 7:01 PM