1MZ tune issue, off idle flat spot..

[Cedrico]

My 1MZ 5 speed has a tendancy to want to bogg in just as I let the clutch out when taking off... No problem at any other time.

So unless I'm Super carefull with the clutch,
or give it too many revs, say 12 - 1500 rpm on take off,
it will want to take a dive... and has even stalled a few times..

It's not me, I had plenty of manuals over last 30 plus years driving ok..

I wonder if the TPS is out of adjustment...

It's a 99 model Tourer.

Is there a simple check or should I move it clockwise or the other way..
Or is there maybe someother reason for the 'low rev flat spot'.. ??

[rusty9]

does it grab or chatter as you engage?

[Cedrico]

Originally Posted by rusty9

does it grab or chatter as you engage?

No the cluch and pressure plate feel fine..

It feels like there is a 'lean' situation on initial throttle opening...
It kind of dies in the arse, like it has too much air and not enough fuel...

That is why I thought maybe TPS... but actually I haven't a clue, and hardly eben know what I am talking about...

but yeah it is a pain and kind of spoils the car...
Having to 'rev' it and / or slip the clutch on take off..

A stranger would stall it for sure..

Otherwise it is great.. except the inside edges of tyres scrub out..

[rusty9]

hmm before fiddling with the TPS make sure the MAF sensor is clean.

[Eye8Pussies]

^ I agree...check clean your MAF first as well, and also try resetting the ecu

it may be a sensor related hiccup

[slpr1mz]

take the intake off, and use throttle body cleaner... try the lucas fuel system cleaner, and change the spark plugs(B*%^% job gah)
just more segestions.