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Odd Idle Running When Hot #1622084
20/06/2018 10:26
20/06/2018 10:26
Joined: Apr 2015
Posts: 507
Sunny Ayrshire
ScouseCoupe Offline OP
Club member 1433
ScouseCoupe  Offline OP
Club member 1433
Enjoying the ride

Joined: Apr 2015
Posts: 507
Sunny Ayrshire
My 20VT has this odd and annoying running at idle issue. When engine is warm and hot an at idle, its creeps up to 1200rpm, some times when I blip the throttle is retracts to 750 -800 rpm, then goes up again when I get to the next junction etc for example.

What I have done so far :

Checked the Coils = OK
Recent replacement NGK plugs = OK
Replaced the ICV with the Kia 0K9A220660A Bosch equivalent 0280140553 = OK
MAF I think works OK
Throttle Body cleaned last year = OK

When engine is cold the auto choke works fine and settles to 700 - 750rpm.

Anything I am missing or should I check.?


1999 Speed Red 20VT ( Standard & Stock )
Re: Odd Idle Running When Hot [Re: ScouseCoupe] #1622129
20/06/2018 19:07
20/06/2018 19:07
Joined: Oct 2009
Posts: 1,175
Sheffield
X19_pilot Offline
Club member 1155
X19_pilot  Offline
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Posts: 1,175
Sheffield
I am having a similar issue although engine temp does not seem to be my issue.
I undid the MAF connection earlier whilst the engine was running at high rpm and the revs settled down to normal, so I am going to replace the MAF tomorrow if I can get a part locally.

Re: Odd Idle Running When Hot [Re: X19_pilot] #1622172
21/06/2018 10:04
21/06/2018 10:04
Joined: Apr 2015
Posts: 507
Sunny Ayrshire
ScouseCoupe Offline OP
Club member 1433
ScouseCoupe  Offline OP
Club member 1433
Enjoying the ride

Joined: Apr 2015
Posts: 507
Sunny Ayrshire
Originally Posted By X19_pilot
I am having a similar issue although engine temp does not seem to be my issue.
I undid the MAF connection earlier whilst the engine was running at high rpm and the revs settled down to normal, so I am going to replace the MAF tomorrow if I can get a part locally.


Good point on the MAF. Shall disconnect and see if this helps.


1999 Speed Red 20VT ( Standard & Stock )
Re: Odd Idle Running When Hot [Re: ScouseCoupe] #1622367
27/06/2018 18:26
27/06/2018 18:26
Joined: Oct 2009
Posts: 1,175
Sheffield
X19_pilot Offline
Club member 1155
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Sheffield
Did you manage to fix it? I cured mine by cleaning the throttle position sensor, locatoed just behind the ICV. yipee

Re: Odd Idle Running When Hot [Re: X19_pilot] #1622416
29/06/2018 09:37
29/06/2018 09:37
Joined: Apr 2015
Posts: 507
Sunny Ayrshire
ScouseCoupe Offline OP
Club member 1433
ScouseCoupe  Offline OP
Club member 1433
Enjoying the ride

Joined: Apr 2015
Posts: 507
Sunny Ayrshire
Originally Posted By X19_pilot
Did you manage to fix it? I cured mine by cleaning the throttle position sensor, locatoed just behind the ICV. yipee


Nope. Could you post a picture of the throttle position sensor you cleaned?


1999 Speed Red 20VT ( Standard & Stock )
Re: Odd Idle Running When Hot [Re: ScouseCoupe] #1622417
29/06/2018 09:49
29/06/2018 09:49
Joined: May 2011
Posts: 1,957
Caston, Norfolk
BBR Offline
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BBR  Offline
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Joined: May 2011
Posts: 1,957
Caston, Norfolk
In this picture from my 16vna - look to the top right section(insert) - you can see the same Throttle position sensor sitting directly in front of the power steering reservoir (placed behind, what be on your 20vt, the ICV sitting on top)

It has three poles on the connector visible.

click to enlarge

Ignore the other three sections as they differ from the 20vt quite a lot

Last edited by BBR; 29/06/2018 09:49.

16v (Blitz)
Re: Odd Idle Running When Hot [Re: ScouseCoupe] #1622423
29/06/2018 10:19
29/06/2018 10:19
Joined: Apr 2015
Posts: 507
Sunny Ayrshire
ScouseCoupe Offline OP
Club member 1433
ScouseCoupe  Offline OP
Club member 1433
Enjoying the ride

Joined: Apr 2015
Posts: 507
Sunny Ayrshire
Originally Posted By ScouseCoupe
Originally Posted By X19_pilot
Did you manage to fix it? I cured mine by cleaning the throttle position sensor, locatoed just behind the ICV. yipee


Nope. Could you post a picture of the throttle position sensor you cleaned?


Forget that. Found it.


1999 Speed Red 20VT ( Standard & Stock )
Re: Odd Idle Running When Hot [Re: BBR] #1622424
29/06/2018 10:22
29/06/2018 10:22
Joined: Apr 2015
Posts: 507
Sunny Ayrshire
ScouseCoupe Offline OP
Club member 1433
ScouseCoupe  Offline OP
Club member 1433
Enjoying the ride

Joined: Apr 2015
Posts: 507
Sunny Ayrshire
Originally Posted By BBR
In this picture from my 16vna - look to the top right section(insert) - you can see the same Throttle position sensor sitting directly in front of the power steering reservoir (placed behind, what be on your 20vt, the ICV sitting on top)

It has three poles on the connector visible.

click to enlarge

Ignore the other three sections as they differ from the 20vt quite a lot


Thanks BBR. Will take a look at mine.


1999 Speed Red 20VT ( Standard & Stock )
Re: Odd Idle Running When Hot [Re: ScouseCoupe] #1622436
29/06/2018 12:50
29/06/2018 12:50
Joined: Apr 2015
Posts: 507
Sunny Ayrshire
ScouseCoupe Offline OP
Club member 1433
ScouseCoupe  Offline OP
Club member 1433
Enjoying the ride

Joined: Apr 2015
Posts: 507
Sunny Ayrshire
Removed the TPS. One of the 4mm Torx pan head screws was a bugger to safely remove. The flat underside of the TPS was very dirty. The green sealing oil ring is semi hard. The shaft, brass bush and aluminium areas were degreased and cleaned. Other than working or not post clean, i have ordered a new bosch TPS ( Bosch Part Number 0280122001 ) for £27 delivered and some new torx 4mm in stainless steel as the top screw was fairly wasted in the torx slot.

So i will know from Wed next week if this has solved my problem.


1999 Speed Red 20VT ( Standard & Stock )
Re: Odd Idle Running When Hot [Re: ScouseCoupe] #1623656
06/08/2018 10:53
06/08/2018 10:53
Joined: Apr 2015
Posts: 507
Sunny Ayrshire
ScouseCoupe Offline OP
Club member 1433
ScouseCoupe  Offline OP
Club member 1433
Enjoying the ride

Joined: Apr 2015
Posts: 507
Sunny Ayrshire
The new Bosch TPS resolved my idle problems. Many thanks to X19-Pilot and BBR with your help.


1999 Speed Red 20VT ( Standard & Stock )
Re: Odd Idle Running When Hot [Re: ScouseCoupe] #1623662
06/08/2018 12:16
06/08/2018 12:16
Joined: May 2011
Posts: 1,957
Caston, Norfolk
BBR Offline
Membership secretary
BBR  Offline
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My life on the forum

Joined: May 2011
Posts: 1,957
Caston, Norfolk
Originally Posted By ScouseCoupe
The new Bosch TPS resolved my idle problems. Many thanks to X19-Pilot and BBR with your help.

Yay - nice job


16v (Blitz)

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