Need help here with 405

[Miadnima]

Hello all,

Approximately I viewed thw whole forum but unfortunately could not find a solution for my problem, the problem is with the unstable condition of the car when the accelarating pedal is released, as soon as I stop pushing the pedal and take my foot off the car losses it's control and kicks like an animal , this condition is doubled while the compressor of air conditioning system is turned on, I have done many thing to solve this problem but haven't succeed, also stepper motor is new , any comments over this irritating problem ?

Thankx in advance,

[Peter.N.]

Petrol or diesel? Ah I see 'stepper motor' that suggests its petrol. Check the top engine mounting.

Peter

[Miadnima]

Dear Peter,
The top engine mounting is checked and is fine, any other suggestions ? Guys this problem is really irritating , I don't dare to relaese the pedal suddendly , I must control the car by clutching!! Please help me . Waiting to hear from u all.

Thankx in advance,
Mi'ad

[RichardW]

Difficult to say, but if things are worse with the AC on, then I would look to see if one of the pulleys, or the alternator or PAS pump are partially seized, causing a sudden retardation in engine speed. Unless something is causing the engine to try and stall?