'94 940 Turbo hesitation and Check Engine

volvocole · Post by **volvocole** » 25 Aug 2009, 23:05

My wagon has a check engine light on with persistant off-idle hesitation (worse when cold). It also surges at heavy throttle before the automatic shifts up.

I replaced the fuel filter and the problem was unchanged.

My first (or rather second) guess would be throttle position sensor.

Any experience with this on the forum?

Thx

Post by **billofdurham** » 26 Aug 2009, 12:34

Have you any fault codes from the On-Board Diagnostic (OBD) unit?

This makes diagnosis easier and you can check for codes yourself on that model.

Bill.