The dirty coolant is not a good sign , I hope it's not too late to flush and refill with the proper coolant.
The proper stuff is not cheap but a lot less than another engine .
Make sure all the linkages and moving parts in the accelerator are moving as they should . That tiny ballrace in the quadrant slot should turn ,not slide in the slot.
Idle Speed MOT Failure
-
robster01
- Registered User
- Posts: 29
- Joined: Mon Jan 18, 2021 11:47 am
- Has thanked: 3 times
- Been thanked: 1 time
Re: Idle Speed MOT Failure
Emissions test below.
I'll flush and refill with coolant tonight, give it a good drive with some vpower and redex in tomorrow morning then get it in for the retest. Simplest solve is if the CO emissions fall below 0.2% in the first test which we weren't far off
I'll flush and refill with coolant tonight, give it a good drive with some vpower and redex in tomorrow morning then get it in for the retest. Simplest solve is if the CO emissions fall below 0.2% in the first test which we weren't far off
-
Micron
- Site Admin
- Posts: 3332
- Joined: Thu Sep 06, 2018 6:08 pm
- Has thanked: 61 times
- Been thanked: 89 times
Re: Idle Speed MOT Failure
That does point more towards mechanical, rather than anything else, I think as John says, make sure everything is moving freely and a change of fluid should help.
Admin and Owner of this fine club 
-
cpt black
- Tech Rep
- Posts: 2823
- Joined: Fri Sep 07, 2018 8:28 am
- Has thanked: 15 times
- Been thanked: 88 times
Re: Idle Speed MOT Failure
You could have a slightly sticking IAC valve,thats gummed up when you drive the car normally
does it always return to base idle after heavy rev,s when warm,or stay higher,if higher take apart
carefully and clean with carb cleaner beware the small rubber gasket
does it always return to base idle after heavy rev,s when warm,or stay higher,if higher take apart
carefully and clean with carb cleaner beware the small rubber gasket
Who is online
Users browsing this forum: No registered users and 29 guests