Technical revs down then up

[sammiboo]

i have posted this on the coupe forum too but i think it could be answered generally too....

been meaning to post this for a while now but most times when i change gear the revs drop down quite a but then all of a sudden the car kicks into life and the revs suddenly go up and then settle, it doesnt do this every time but most times.

any ideas?

 

[Ben R]

Don't mean to sound stupid but have you had a diagnostics check recently? When was it last serviced?

 

[dazzdog]

idle control valve? my tipo used to do that so i took the idle control valve off and cleaned it with carb cleaner and after that it ran fine. hope that helped

 

[sammiboo]

idle control valve? my tipo used to do that so i took the idle control valve off and cleaned it with carb cleaner and after that it ran fine. hope that helped

thats whats was suggested on the coupe forum good place to start me thinks

 

[hmallett]

Get your local friendly person to get the carb cleaner from their parents, then whip the ICV off and give it a bit of a clean.
H

 

[sammiboo]

local?!

i dont know anyone around here who has that stuff :shakehead

 

[hmallett]

Maybe local to your weekend location then.... :stupid:
H

 

[sammiboo]

ah well if you had specified the location it might have helped me :chin:

 

[sumplug]

nothing todo with your idle valve.2 things to check.throttle position sensor,and the MAP sensor.i think your MAP sensor wants cleaning out[because of the position it gets full of oil].this will sort the problem out.have a diagnosis check done to check the TPS and other sensors and multi plugs[another known problem].on the coupe web site ther is mentioned a chap in leeds and a chap in wigan that specialises in coupes.hope this helps.

 

[sammiboo]

nothing todo with your idle valve.2 things to check.throttle position sensor,and the MAP sensor.i think your MAP sensor wants cleaning out[because of the position it gets full of oil].this will sort the problem out.have a diagnosis check done to check the TPS and other sensors and multi plugs[another known problem].on the coupe web site ther is mentioned a chap in leeds and a chap in wigan that specialises in coupes.hope this helps.

the guy in wigan i wouldnt touch with a barge poll and the guy in leeds area isnt actually in leeds yets afaik.

I am taking the car to either iceberg in brum, or paxtons in wrexham for an MOT so i could get it looked then

cheers for your advice

 

[hmallett]

nothing todo with your idle valve.2 things to check.throttle position sensor,and the MAP sensor.i think your MAP sensor wants cleaning out[because of the position it gets full of oil].this will sort the problem out.have a diagnosis check done to check the TPS and other sensors and multi plugs[another known problem].on the coupe web site ther is mentioned a chap in leeds and a chap in wigan that specialises in coupes.hope this helps.

The 20V engines don't have a MAP sensor - these are only on the 16V versions. I'd still give the ICV a clean, as it's free, before getting diagnostics involved.
H