Hey All. not too sure how to describe this. It's not every time which is a pain.

When I go round a corner, sometime the transmissions "jolts". Like it's gone from 3rd to 2nd to 1st but hits 1st fairly hard with a jolt. She drives fine if I come to a complete stop and take off again, it's just when I slow down to turn a corner then accelerate again. And not every time either.

MadMagna changed the trans oil and filter on 30 Dec, and I've had zero issues. Not sure how to proceed with this. As long as it doesn't involve dollars - we don't have too many spare...

Regards, Tony

Hey All. not too sure how to describe this. It's not every time which is a pain.

When I go round a corner, sometime the transmissions "jolts". Like it's gone from 3rd to 2nd to 1st but hits 1st fairly hard with a jolt. She drives fine if I come to a complete stop and take off again, it's just when I slow down to turn a corner then accelerate again. And not every time either.

MadMagna changed the trans oil and filter on 30 Dec, and I've had zero issues. Not sure how to proceed with this. As long as it doesn't involve dollars - we don't have too many spare...

Regards, Tony

sounds like the valvetrain is running dry to me, best bet is to take it to a tranny specialist to have a look at it

Forgot - only started happening in the last 3-4 days as well. Mal did the engine oil and filter as well.

Valvetrain?

valvebody im sure he meant

Mate, get her nice and hot and check the fluid level, always first thing to look at. Can sometimes drop a bit out of a drive shaft seal.

The fact that it is while cornering makes me think is a mechanical and not electronic issue

Are there any issues when driving normally such as when you are slowing down or speeding up in a straight line or is it only when cornering.

If so, is it only sharp corners or on all corners or bends

Haha, that whoosing noise are these answers going straight over my head! :bowrofl:

Question though; could it be the heat? I have an oil in there that I haven't used before (Penrite HPR15) where it's been Shell for the last 2-3 years. Now, it's been really warm in the last few days... - could the engine not like the oil?

Other thing I've noticed recently is fuel consumption is up - by around 1l/100km's. In the last 3-4 tankfuls. Thought it was me not filling up right but now...

Sorry - as I say above, I know nothing about engines. Want to learn, but not on my daily driver if I can avoid it.

Regards, Tony

Mate, get her nice and hot and check the fluid level, always first thing to look at. Can sometimes drop a bit out of a drive shaft seal.

The fact that it is while cornering makes me think is a mechanical and not electronic issue

Are there any issues when driving normally such as when you are slowing down or speeding up in a straight line or is it only when cornering.

If so, is it only sharp corners or on all corners or bends

I've only noticed it when slowing to go round a 90 degree bend. A couple of other times, I've felt a "mini stall" (for want of a better phrase) like I've hit a bump in the road. But that's the paranoid in me - it probably only was a bump in the road!. We went to Phillip Island and back today, no issues. Coming back from collecting the niece at the station and slowing to do a 90 deg bend, "clunk". Even the niece said "what was that?".

Not noticing anything in a straight line, cruising nice and easy.

Again, a bit nervous; not a lot of cash at present, certainly not if it's a case of transmission needing much work... :cry: In an ideal world Mal - I'd be driving to your place now :)

Regards, Tony

Edit: OK, neighbour next door explained. He's thinking that the transmission may be a bit low on fluid. So tomorrow, we're going to do the brakes. then while starting to bed the brakes in, we'll check trans fluid levels.

Alright. Went for a drive, couldn't fault the thing at all. Fluid levels are nice and high, trans almost looks too full. Could it have been the heat? Or my imagination? I'll see how she drives over the next few days.

Regards, Tony

Odd question, how much fuel was in the car at the time?

Odd question, how much fuel was in the car at the time?

+1 and is it a right hand bend?

Tell you what - that's not an odd question. She's pretty low, guage said below half when it first did it and now it's close to empty. I'm filling up on the way to work tomorow morning.

I've noticed some oddities with fuel in the last few tanks. 2 fills ago, worst recorded consumption in 6 months. It's better in the last fill but the current tank was looking hopeless again until we cruised back down to Phillip Island yesterday. I average 10.442 on all driving but the tank 2 fills ago was 11.587. Reading the guage, I reckon there's around 15 lites in the tank and 484km on the tripmeter. If that's right, she's going to still be at around the 11.5 mark.

What are you thinking? I have been wondering if I've had a bad tank but I haven't heard of bad petrol in years. Is it worth trying another brand (usually use United 95 E10).

Screaming TE - more turning left I think.

Regards, Tony

Tell you what - that's not an odd question. She's pretty low, guage said below half when it first did it and now it's close to empty. I'm filling up on the way to work tomorow morning.

I've noticed some oddities with fuel in the last few tanks. 2 fills ago, worst recorded consumption in 6 months. It's better in the last fill but the current tank was looking hopeless again until we cruised back down to Phillip Island yesterday. I average 10.442 on all driving but the tank 2 fills ago was 11.587. Reading the guage, I reckon there's around 15 lites in the tank and 484km on the tripmeter. If that's right, she's going to still be at around the 11.5 mark.

What are you thinking? I have been wondering if I've had a bad tank but I haven't heard of bad petrol in years. Is it worth trying another brand (usually use United 95 E10).

Screaming TE - more turning left I think.

Regards, Tony

Yeah what Chris reckons it might be running dry

As in starving of fuel when I go round the corner a bit sharp? Worth trying to fill her at a different petrol station tomorrow?

i know from both my magnas (TE and TJ, that when anywhere from under 1/3 full, a right hand bendif long/sharp enough) can draw the fuel away from the pick up causing the car to jerk. Once you straighten out, fuel covers the pickup and away you go. Funnily enough, i dont seem to do many left hand turns so cant comment on whether it will do it then.

Hmmm... is it possible (be warned - displaying total lack of knowledge here, but knows some names of car parts!) that my fuel filter is a bit clogged. So when I do do a sharpish turn, or a turn where I'm not pushing on the accelerator, not enough fuel is getting through?

To be honest - unknown as to when it was last changed. Can't remember.

Regards, Tony

Mate, E10 is false economy, there have been road tests done that show that you use more fuel running E10 and ends up costing more

I would say perhaps a bad tank of fuel, try a full tank of normal fuel and also throw a bottle of injector cleaner (wynns if you can get it) It will not clean your injectors but will assist in getting any moisture in your fuel out and burnt.

When you came over last time, did we do the fuel filter?

Another issue that can happen, the sock in the tank can get blocked or fall off and this can also cause similar issues

We talked about doing the fuel filter before I came over, never remembered to do it. Hard to do? Maybe if it's a quick job I can drop over 1 weekend.

OK; I'll drop in a tankload of United 91 tomorrow and some Wynns injector cleaner and see how she goes.

Thanks guys - appreciate the replies.

Regards, Tony

OK. Still have the issue. Haven't had the time to put the Wynns in, will get it on the weekend. But, was digging through here and found this thread

http://www.aussiemagna.com/forums/showthread.php?t=45377&highlight=reset+transmission

from 2007. Rather than resurrect it from it's grave, I copied this bit out - it describes almost perfectly what is happening

"In the last couple of weeks, occasionally when cornering, the auto gearbox feels like it drops into neutral, then drops back into gear when some throttle is applied.

The car only appears to do this on the first couple of corners when I'm driving it home in the afternoon - it has never done it in the morning, when driving to work.

The sequence of events is:
-drive down straight bit of road
-approach corner, back off throttle, brake
-navigate corner, apply small amount of throttle
-engine revs
-gearbox suddenly decides to drop back into gear
-sudden lurch and possible chirp as gearbox engages"

Only difference is I find it's not in the first few corners but after around 15-20kms. It is a bit better - I think, although had a huge flare between 1st and 2nd tonight. But - the fix was the fluid was low and I'm pretty sure mine isn't. I'll measure it again Sunday morning to be sure.

There's also a reference in here http://autospeed.com/cms/A_3019/article.html (thanks Gas_Hed) to resetting the transmission. Is that worth a try? Could it have gotten itself a bit confused after her fluid change a few weeks back? Or should I see how it works out in the next few weeks then get a power flush?

I blame the heat... it started on the first 40+ day we had.

Regards, Tony

Resurrecting. She's actually got better in the last few days but still doing this. Spoke with Mal last Monday and we have a few things to look at (do all the filters and the driveshafts). I could not get it to happen on demand and neither could Mal when he drove her.

But I'm thinking (alert; total amatuer mechanic talking), is it possible there's a bit of sludge in the trans? Reason for asking is the fact that it has got better all of a sudden - like something has moved a bit. It's no longer a big lurch when it happens, more a small flare. Engine note doesn't change much, revs don't change, it just flares (for want of a better word) from 1st to 2nd gear.

My question is would a power flush be worth trying? Mal did the trans fluid and filter in late Dec though and it took 5.5 litres OK.

I don't want to spend countless dollars trying to fix and want to try the simple stuff first before going to whole hog and replacing the trans.

Thanks people.

Regards, Tony

Apologies folks, resurrecting again.

I'm pretty sure something is sticking in the trans.

- If I accelerate clean from stopped, no issues between 1st and 2nd.
- If I'm slowing at a roundabout or a corner, and then accelerate out, it feels like something goes "clunk" and she lurches back into 2nd. But, if I coast and accelerate quietly, it doesn't happen.
- Yesterday on the way home from Jollys, accelerated from stopped at the lights down Greens Road. 1st, 2nd, 3rd then a noise than sort of sounded like the engine revving a bit and a massive "CLUNK"/metallic "BANG" and she went into 4th. I felt momentum stopping as well. It was like something was trying to be pulled through a hole that was slightly too small, then it finally came unstuck with a rush.

That to me says lubrication - it's not flowing correctly through the box. But the fluid was changed by MadMagna in late December and Mal has checked it and it's perfectly fine. Right colour etc. I'm trying to leave Mal alone on this - I've asked him enough questions on this issue.

Is a power flush worth it? Spend $200 to power force the fluid through and see if that fixes the issue? Or, just go the whole hog and replace the trans with a known good one and get it over with? She drives fine - doesn't miss a beat apart from the issue above. I'll drive 65km's today and it'll happen maybe 2-3 times in those 65k's.

Regards, Tony