New 93 vp " idle issue "

[Vp stocko]

Hey, just bought a 93 vp.. When it idles it revs up and down ( not a constant rpm idle ) what could be the problem, it runs fine when in gear..

[Burnout124]

air leak or posible idel control motor problem

[hotweelz]

sounds to me like the vacuum line from the MAP sensor (Passenger side of the firewall) is disconnected or split

[Vp stocko]

Thanks for that guys, i will have a look today

[Brett_jjj]

Id also be checking for any logged ECU error codes which can help you find any problems.If you are not sure how to do this simple test,then heres a link to a post that shows you how.
---Checking your Computer for Faults (VN - VP)---