Throttle response question

esmo

When my car is fully warmed up and idling the throttle response isn't 100%. The second you hit the accelerator it takes a split second for the car to react. It doesn't seem right because it should react instantly. It’s fully serviced and I cleaned the map sensor and throttle body. Sometimes when I press the accelerator really fast it feels like the car is going to stall just before the power kicks in. Also when driving along in say 4th gear and I drop a gear it again takes a second to react! Anyone any ideas???

Neilw

Make and model of car?

esmo

Toyota Altezza 2.0l 4cyl 1999

cock robin

Is it petrol or diesel ?

Midnight_EG

Altezzas are only petrol.

CarMuppet

Crack in air intake piping after the MAF or a lamda sensor on the way out (slow reaction). Stupid question but do you have an orange diagnostic light on?

Matt Simis

CarMuppet wrote: »

Crack in air intake piping after the MAF or a lamda sensor on the way out (slow reaction). Stupid question but do you have an orange diagnostic light on?

Was thinking it sounded alot like a MAF problem too. OP, try disconnecting the MAF and see does it get better/different.

esmo

Thanks for the replies guys! No cracks anywhere and no light on in the dash. I'll try disconnecting the map sensor and see does it make a difference. Cheers!

Muckie

Sounds very much like the throttle body or a sensor attached to the unit,

some of them have 2 or 3. Or perhapes one of the coil packs attached to the spark plugs.

If no joy maybe get a diagnostic test done, might tell you what exact sensor is at fault.

Muckie

Muckie wrote: »

Or perhapes one of the coil packs attached to the spark plugs.

I was thinking coils.

Muckie

Came across something similar with a fella who had a Passat,
turned out to be part of the loom attached to the coils.

analfabets

I had similar problem with 5series. Local garages kept changing MAF, Lambda....
at the end brought the car to BMW turned out to be camshaft angle sensor.