Thread: idle bypass valve

just put a new idle bypass valve in and now she wont idle ,any ideas how to fix this problem,thanks luke, 93 range rover

... Firstly ...
Why did you install a new stepper unit??
What was wrong with the old one??

What did you rip apart to change it??

Mike

what happens when you put the old IAC valve back in?

have you re set the throttle plate settings with the new IAC?

cheers phil

Originally Posted by mike 90 RR

... Firstly ...
Why did you install a new stepper unit??
What was wrong with the old one??

What did you rip apart to change it??

Mike

it broke when i took it of so i had to get a new one and now it doesnt idle properly or start first go

Originally Posted by discowhite

what happens when you put the old IAC valve back in?

have you re set the throttle plate settings with the new IAC?

cheers phil

thanks mate but how do you do that thanks luke..

Originally Posted by spook

it broke when i took it of so i had to get a new one and now it doesnt idle properly or start first go

Why did you take it off tho?? ... was it because you have idle fluctuation's that you were trying to sort out??

When you undid the 3 hex bolts ... to remove the stepper ... you did not remove the top of the plentium?? ... just removed it in situ??

Check this ... The stepper unit has a rubber 1/8 vacuum hose that connects to it ... Did you put this back on?? (as this is easy to forget to do)

You removed the gasket & installed a new one ... used Holimar 3 as a gasket sealant??

Because the stepper is behind the plentium and hard to see /// Use a torch and a shaving mirror to see the stepper unit ... Make sure that all hoses are connected and that you have no vacuum leaks

Also ... you do have the air filter all connected & sealed up as it should be??

Mike

Originally Posted by mike 90 RR

Why did you take it off tho?? ... was it because you have idle fluctuation's that you were trying to sort out??

When you undid the 3 hex bolts ... to remove the stepper ... you did not remove the top of the plentium?? ... just removed it in situ??

Check this ... The stepper unit has a rubber 1/8 vacuum hose that connects to it ... Did you put this back on?? (as this is easy to forget to do)

You removed the gasket & installed a new one ... used Holimar 3 as a gasket sealant??

Because the stepper is behind the plentium and hard to see /// Use a torch and a shaving mirror to see the stepper unit ... Make sure that all hoses are connected and that you have no vacuum leaks

Also ... you do have the air filter all connected & sealed up as it should be??

Mike

sorry mike but i think you are talking about something else,its called a air bypass valve which has a plug on it with wires, it broke when i unscrewed it so i got a new one i had to undo those hex bolts to get the broken bypass valve out, i put the new one in and used gasket sealant and all hoses on thanks luke.. 93 range rover

Originally Posted by discowhite

what happens when you put the old IAC valve back in?

have you re set the throttle plate settings with the new IAC?

cheers phil

yes phil i can not put the old valve back in because it snapped the thred so its dead but i have not set the throttle plates to the new valve, dont no how to do this thanks luke.