car hesitating during acceleration

[rubs]

I have following 2 issues with the car (may be related)
1) When cold start, it does not move for 5 sec even if i press the accelerator and then move with hesitating for 5-10 sec and then go in full blow. So now i wait for 1 min so that it warm ups before accelerating. Is this normal or something is wrong in the car?
2) When in heavy traffic and driving for 5-6 miles at less than 20mps, when suddenly wants to accelerate i hear loud noise from front, looks like car trying to run without changing to high gears.
What can be the possible issue or this is normal?

Thanks
--rubs

2001 i30
55k miles

[Mrbizness1]

Originally Posted by rubs

I have following 2 issues with the car (may be related)
1) When cold start, it does not move for 5 sec even if i press the accelerator and then move with hesitating for 5-10 sec and then go in full blow. So now i wait for 1 min so that it warm ups before accelerating. Is this normal or something is wrong in the car?
2) When in heavy traffic and driving for 5-6 miles at less than 20mps, when suddenly wants to accelerate i hear loud noise from front, looks like car trying to run without changing to high gears.
What can be the possible issue or this is normal?

Thanks
--rubs

2001 i30
55k miles

Many hesisitation problems can be caused by a clogged fuel filter.

[Nahkapohjola]

Originally Posted by rubs

I have following 2 issues ...

Not normal, get corrected before towing is the only chance.

I suspect A/T is slipping. 1. Check out oil level, read u manual. 2. Get all oil changed: A/T Oil mfg warrants only 20-30k for std tranny oil.

[rjosmit]

having similar problem, what was the outcome?

[Nahkapohjola]

Originally Posted by rjosmit

having similar problem, what was the outcome?

Typically nobody tells. Thks for nothin...

TPS Throttle Position Sensor is used as input only on cold engine; on tranny TPS input is used always. If bad, symptoms fit.
Clean and/or change, about 100$.

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