annoying hunting problem

[rhysmate]

Can anyone tell me why my engine is hunting. it happens when the car is idling until i put on a few electrical things like headlights and aircon and so on. the engine hunts and all my lights and heater and other ancillaries seem to pulsate with it.. ill upload videos of it happening.

it also happens constantly while im driving and the car bunny hops if i hold the revs when im driving along. i can see the headlights humming and i keep blowing bulbs.

can anyone help and if you cant help over the forum ill pay you to help in person

Regards,

Rhys

[rhysmate]

i cant get the videos to upload

[sidewaysreilly]

Check for vacuum leaks around the throttle body........split hoses, wires off etc. Maybe the IAC valve. What year/model do you have.

[rhysmate]

its a 90 eunos roadster 1.6.. IAC?

[sidewaysreilly]

idle air control valve on the throttle body.

[sidewaysreilly]

also clean the airflow meter with some carb. cleaner.

[rhysmate]

How can i test the IAC valve

[shaneh]

have you got any coolant leaks?
i have 1 and when t gets low the car starts too hunt but the second i top it up it idles perfect again

[rhysmate]

doesnt seem to be the problem.. gona try a new airflow meter