No response/power in drive first thing am

[solidute Junior Member Find all posts View Profile Close solidute]

Not sure if this is in right section but we'll see

08 grande auto d4d
So the 120 has been doing this thing quite regularly where it's gutless/almost zero throttle response first thing in the morning... but only in drive.

In neutral before going anywhere it revs fine. In reverse it's as responsive as expected. But once on the road and shifted into drive there's little action. Sometimes I'm 2 houses down the street before it's comes good sometimes it's 10 metres. It'd be something just above idle and moving then it comes good.

Some days I'd think it's throttle position sensor, some days I'd think it's a ridiculously huge flat spot. But the uniqueness of it being only once in drive and only early/first drive in morning has me stumped. It doesn't "chug" as if it's stuck in top gear, like in a manual, it's just little to no response.

I'm kind of leaning towards a valve body/ transmission control kind of issue, or communication between gear selection and ecu... but just not sure.

Anyone else experienced this or something similar

Cheers

[Guest Close Guest]

Likely trans related. When was trans fluid last changed and serviced? I'd start there first. Have it changed and see if any better. If you warm it up for say 3-4 mins first is it any better? Could be torque converter is draining and needs to be refilled/pumped. Again, trans service may sort it.

[LeighW Avid PP Poster! Find all posts View Profile Close LeighW]

In reverse your probably not requiring a lot of power?

Possibly turbo charger, maybe van activator sticking?

[sweeks Junior Member Find all posts View Profile Close sweeks]

Have experience this in other Toyota diesel (kz90, 120 and Hilux 3.0) esp in vehicle was parked up for a couple of days.

Good advice ... start with the basics.

[carco Advanced Member Find all posts View Profile Close carco]

Check you haven’t accidentally pushed the 2nd start button.