#1: Erattic idle 2001 GTi - Solved Author: CD-B3, Location: Salisbury / New ForestPosted: Sun Feb 06, 2011 9:40 am ---- The engine used to idle a bit high, and needed a tap on the throttle to get it started. I was told that the idle control valve needed replacing.
So I did and gave it a clean at the same time.
The idle wasn't nearly as bad as it was but it still had a 'surge' every minute or so.
So I changed the full throttle body, TB heater, throttle position sensor, air temp sensor & MAP sensor but it still has the occasional surge in revs.
The revs sometimes stick around 2k RPM but it's quite rare.
It cut out by itself at the end. Last edited by CD-B3 on Mon Feb 21, 2011 5:21 am; edited 4 times in total
#2: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Sun Feb 06, 2011 12:07 pm ---- Anyone?
Would like to get it sorted today really.
#3: Re: Erattic idle 2001 GTi Author: leigh_boy, Location: EastbournePosted: Sun Feb 06, 2011 1:07 pm ---- temp sensor i have had that problem so many times ( euro car parts £25) i need 1 as well for mine.
#4: Re: Erattic idle 2001 GTi Author: mattievrs, Location: LeicesterPosted: Sun Feb 06, 2011 1:15 pm ---- Throttle cable sticking?
#5: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Sun Feb 06, 2011 2:33 pm ----
mattievrs wrote:
Throttle cable sticking?
Nope, it does it when on idle. And at random intervals.
Ed suggested that the intake manifold may have a leak. There is a bit of a hissing.
#6: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Sun Feb 06, 2011 2:46 pm ----
leigh_boy wrote:
temp sensor i have had that problem so many times ( euro car parts £25) i need 1 as well for mine.
Already swapped it.
#7: Re: Erattic idle 2001 GTi Author: leigh_boy, Location: EastbournePosted: Sun Feb 06, 2011 4:27 pm ---- the green plug 1?
other thing it could be and sorry for spelling is Throttle Potentiometers .
are you able to put it on diagnostics?
#8: Re: Erattic idle 2001 GTi Author: mattievrs, Location: LeicesterPosted: Sun Feb 06, 2011 7:05 pm ----
CD-vRS wrote:
mattievrs wrote:
Throttle cable sticking?
Nope, it does it when on idle. And at random intervals.
Ed suggested that the intake manifold may have a leak. There is a bit of a hissing.
i think youve answered your question mate.
#9: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Mon Feb 07, 2011 3:47 am ---- i have this exact problem. and have done the exact same replacements. what sort of a job is removing the inlet manifold to check the gasket?
#10: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Mon Feb 07, 2011 4:13 am ----
Kersh wrote:
i have this exact problem. and have done the exact same replacements. what sort of a job is removing the inlet manifold to check the gasket?
Not all that difficult. Removed the IM from the last 206 I had in for breaking.
I'm going to give it a go tomorrow night. I'll let you know how I get on.
#11: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Mon Feb 07, 2011 4:24 am ---- perfect thanks! ill watch this one closely
#12: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Mon Feb 07, 2011 3:19 pm ----
Was a bit of a pain but got there in the end.
Had to remove the throttle body, wiring housing, fuel rail & injectors.
This is from the 206 I'm breaking, decided to take it off the failed engine before playing with the good one.
I'll swap it to the one on the other 206 tomorrow night and see if that works, the seals look alright on this one.
On the far right in this picture is a tiny bit of silver hose,
You need to unclip it for the intake manifold to come off.
Took me about 45 mins to remove, some bolts are a bit hard to reach.
#13: Re: Erattic idle 2001 GTi Author: leigh_boy, Location: EastbournePosted: Mon Feb 07, 2011 3:25 pm ---- cd-vs , dont suppose you have that bit of hose im after that goes from the head to the throttle body?
#14: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Mon Feb 07, 2011 4:10 pm ----
leigh_boy wrote:
cd-vs , dont suppose you have that bit of hose im after that goes from the head to the throttle body?
The engine breather hose?
No they always break as they get brittle with age.
Part number is 00001192T6 RE-SUCTION PIPE (Engine Breather Hose)
£21.01+ VAT
#15: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Mon Feb 07, 2011 4:38 pm ---- i took mine apart tonight, strangely my seals look ok. but i suppose one of them could have been sucked in or something as 2 of them came off when i removed it so i couldnt see how they were fitted.
it was a bit of a mess however, dirty and grotty so ive given it a good clean and im going to get some new seals and a new throttle body seal tomorrow just to be on the safe side.
one thing that did worry me though. ran my finger aroudn the inside of the manifold and it came out black! is it normal for their to be this amount of grot lining the walls of the manifold?? engines done 65kish..
how did yours do with cleanliness?
#16: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Mon Feb 07, 2011 4:44 pm ---- Its filthy, left it off overnight to clean it tomorrow.
#17: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Mon Feb 07, 2011 4:47 pm ---- how are you planning on doing that?? flushing it or something?
#18: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Mon Feb 07, 2011 4:52 pm ---- Not sure yet, white spirit maybe.
#19: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Mon Feb 07, 2011 5:39 pm ---- lol well let me know what you decide on, i was thinking spraying a s**t load of heavy duty cleaner down it, leaving it for a while then flushing it out, then leaving overnight to dry. god knows whats going to come out..
#20: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Tue Feb 08, 2011 3:57 am ---- looking on google it would seem the best way to do it is leave to soak in a 50/50 mixture of degreaser overnight then use brake cleaner and a brush on a wire to clean the tunnels. then rinse and leave to thoroughly dry.
might paint mine silver or gloss black whilst it off..
#21: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Tue Feb 08, 2011 4:03 am ---- Could always stick a 180 inlet on in its place.
I'll give it a clean later.
#22: Re: Erattic idle 2001 GTi Author: Lee, Location: EnglandPosted: Tue Feb 08, 2011 10:09 am ---- Been serviced regularly?
Not leaking on the inlet manifold is it?
Any fault codes?
Might be the camshaft thats worn??
#23: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Tue Feb 08, 2011 10:28 am ----
Lee wrote:
Been serviced regularly?
Not leaking on the inlet manifold is it?
Any fault codes?
Might be the camshaft thats worn??
Yep, full service history and most done by a dealer.
It's making a slight hiss when you rev it. So I'm swapping the inlet this evening.
I tried starting it at lunchtime and it was pretty reluctant. I'll get a video up later.
Had a scan and came up as a faulty ICV which I've since replaced.
#24: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Wed Feb 09, 2011 3:37 am ---- what happened with this last night after you put it back together? problem solved?
my manifolds currently soaking in degreaser so i can give it a good clean tonight
#25: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 4:06 am ---- Didn't have time to work on the cars last night.
I'm just uploading a video.
I ran the car this morning. It struggled to start but it did, then after 1 min the engine died...
#26: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Wed Feb 09, 2011 4:14 am ---- fair enough, sounds similar to mine but i havent reached that severity yet
btw, ordered new seals etc from peugeot. the throttle body seals only come in packs of five so if you want one ill send it to you for a pound lol
beats having to buy five..
#27: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 4:44 am ---- I'll probably take you up on your offer if I need a new one, but I might swap the entire intake manifold.
The video is still uploading, the one day I forget the lead to my phone...
#28: Re: Erattic idle 2001 GTi Author: Danny., Location: PeterboroughPosted: Wed Feb 09, 2011 5:06 am ---- Just to check... That idle control valve looks old.. Is that the one you replaced it with?
#29: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 5:11 am ----
Danny. wrote:
Just to check... That idle control valve looks old.. Is that the one you replaced it with?
That is the original 2001 ICV, the one I've replaced it with seemed to work fine on a 1999 GTi, gave a it a clean too.
#30: Re: Erattic idle 2001 GTi Author: Danny., Location: PeterboroughPosted: Wed Feb 09, 2011 5:50 am ---- Hmm cause my problem was kinda the same.. And i replaced the ICV with a brand new oen fron Eurocar parts about £50 and worked fien afterwards.... I know my new one had a rubber cap on the end.. does yours?
#31: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 5:51 am ---- Yeah, and a rubber O ring, I don't remember there being one on the old one.
#32: Re: Erattic idle 2001 GTi Author: Danny., Location: PeterboroughPosted: Wed Feb 09, 2011 6:18 am ---- Yea Hmm... strange i cant think of anythign else apart from air intake, or even exhaust blowing?
#33: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 6:25 am ----
Danny. wrote:
Yea Hmm... strange i cant think of anythign else apart from air intake, or even exhaust blowing?
But it wouldn't cause the car to cut out.
#34: Re: Erattic idle 2001 GTi Author: leigh_boy, Location: EastbournePosted: Wed Feb 09, 2011 8:16 am ---- like i sai before sounds to me like Throttle Potentiometers its on the right hand side yellow and white plug, change that if you have a spare and should be sorted
#35: Re: Erattic idle 2001 GTi Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Wed Feb 09, 2011 8:18 am ----
leigh_boy wrote:
like i sai before sounds to me like Throttle Potentiometers its on the right hand side yellow and white plug, change that if you have a spare and should be sorted
he already did, its also called a throttle position sensor
#36: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 8:25 am ---- Yep.
Just been home & got the cable for my phone.
Video is uploading now.
#37: Re: Erattic idle 2001 GTi Author: leigh_boy, Location: EastbournePosted: Wed Feb 09, 2011 8:49 am ---- do you get any popping sounds \ backfires?
#38: Re: Erattic idle 2001 GTi Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 8:51 am ----
#39: Re: Erattic idle 2001 GTi - Now with video Author: leigh_boy, Location: EastbournePosted: Wed Feb 09, 2011 9:14 am ---- seems like once its warmed up and comeing off the choke it dies, best thing to do is get te ecu checked for any stored fault codes. might give u a clue as to whats wrong
#40: Re: Erattic idle 2001 GTi - Now with video Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 9:20 am ----
leigh_boy wrote:
seems like once its warmed up and comeing off the choke it dies, best thing to do is get te ecu checked for any stored fault codes. might give u a clue as to whats wrong
I've got a code reader on its way to me in the post.
I'll get it plugged in.
#41: Re: Erattic idle 2001 GTi - Now with video Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Wed Feb 09, 2011 9:21 am ---- 206's dont have an automatic choke do they?
#42: Re: Erattic idle 2001 GTi - Now with video Author: leigh_boy, Location: EastbournePosted: Wed Feb 09, 2011 9:24 am ---- its injection so ye
the idle control valve will be part of the choke system, the rest is all ecu and injectors
#43: Re: Erattic idle 2001 GTi - Now with video Author: CD-B3, Location: Salisbury / New ForestPosted: Wed Feb 09, 2011 9:25 am ---- Yeah they do Kersh, the first min or so they idle 200RPM higher.
#44: Re: Erattic idle 2001 GTi - Now with video Author: leigh_boy, Location: EastbournePosted: Wed Feb 09, 2011 9:28 am ---- a test u can try is remove the idle controll valve, and leave cove the hole with your finger and sii if yu can get it to idle, or disconnec tthe idle control valve
#45: Re: Erattic idle 2001 GTi - Now with video Author: Edward, Location: In the garagePosted: Wed Feb 09, 2011 4:33 pm ---- Just unplug the idle control valve! Have you tested the fuel pressure?
Oily inlets are normal because the engine vents into the inlet. No point in cleaning it as it will just oil up again.
#46: Re: Erattic idle 2001 GTi - Now with video Author: CD-B3, Location: Salisbury / New ForestPosted: Thu Feb 10, 2011 4:06 am ----
Edward wrote:
Just unplug the idle control valve! Have you tested the fuel pressure?
Oily inlets are normal because the engine vents into the inlet. No point in cleaning it as it will just oil up again.
Thats a good shout.
The fuel pump does sound a bit weak.
I'll see if I can test it this weekend.
#47: Re: Erattic idle 2001 GTi - Now with video Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Thu Feb 10, 2011 4:13 am ---- ive got one for sale if its the right one you need
#48: Re: Erattic idle 2001 GTi - Now with video Author: CD-B3, Location: Salisbury / New ForestPosted: Thu Feb 10, 2011 8:29 am ---- Scanned it for faul codes got:
P0170 - Fuel Trim malfunction (Bank 1)
P0135 - 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0116 - Engine coolant Temp CKT Range/Performance
P0170P - ?
P0135P - ?
P0116P - ?
P0131P - 02 Sensor Circuit Low Volts (Bank 1 Sensor 1)
I'm not sure what the ones with the P at the end mean?
So what's the next step?
#49: Re: Erattic idle 2001 GTi - Fault codes read Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Thu Feb 10, 2011 8:34 am ---- looks like you need a new lambda id say, atleast thats a couple of codes out the way
#50: Re: Erattic idle 2001 GTi - Fault codes read Author: CD-B3, Location: Salisbury / New ForestPosted: Thu Feb 10, 2011 8:50 am ---- What about the 1st & 3rd code?
#51: Re: Erattic idle 2001 GTi - Fault codes read Author: Danny., Location: PeterboroughPosted: Thu Feb 10, 2011 9:25 am ---- Did you say you replaced the Temp Sensor? What about the thermostat?
#52: Re: Erattic idle 2001 GTi - Fault codes read Author: CD-B3, Location: Salisbury / New ForestPosted: Thu Feb 10, 2011 9:36 am ---- Where is the thermostat located?
#53: Re: Erattic idle 2001 GTi - Fault codes read Author: Edward, Location: In the garagePosted: Thu Feb 10, 2011 9:40 am ---- Dodgy thermostat wouldn't cause a fault code to pop up. If it was open the engine just wouldn't warm up so it would be in warm up mode all the time.
#54: Re: Erattic idle 2001 GTi - Fault codes read Author: CD-B3, Location: Salisbury / New ForestPosted: Thu Feb 10, 2011 9:49 am ----
Edward wrote:
Dodgy thermostat wouldn't cause a fault code to pop up. If it was open the engine just wouldn't warm up so it would be in warm up mode all the time.
What do you think the first one is?
Something to do with the fuel pump?
#55: Re: Erattic idle 2001 GTi - Fault codes read Author: Lee, Location: EnglandPosted: Thu Feb 10, 2011 10:17 am ---- Found out for you
The second P in the codes mean they are Pending.
Pending codes are soft codes, they are like a "heads up, something might be wrong" warning.
#56: Re: Erattic idle 2001 GTi - Fault codes read Author: CD-B3, Location: Salisbury / New ForestPosted: Thu Feb 10, 2011 10:20 am ----
Lee wrote:
Found out for you
The second P in the codes mean they are Pending.
Pending codes are soft codes, they are like a "heads up, something might be wrong" warning.
So clearing them should sort it?
(And changing the 02 sensor)
What is "P0170 - Fuel Trim malfunction (Bank 1)" though?
#57: Re: Erattic idle 2001 GTi - Fault codes read Author: Lee, Location: EnglandPosted: Thu Feb 10, 2011 11:35 am ---- Will be something to do with the mixture of the fuel/air, so if you have changed the lambda sensor it could have been taht at fault.
#58: Re: Erattic idle 2001 GTi - Fault codes read Author: CD-B3, Location: Salisbury / New ForestPosted: Thu Feb 10, 2011 11:42 am ----
Lee wrote:
Will be something to do with the mixture of the fuel/air, so if you have changed the lambda sensor it could have been taht at fault.
Just done some Googling
Quote::
Any injection fault that affects the expected amount of fuel used will set a fuel trim code. It literally means that the Lambda probe [exhaust oxygen sensor] is asking for more fuelling adjustment than the ECU has the capacity to alter the pre-set programming. [I.e. It's ability to "trim" the settings.]
I'll change the sensor this evening. Hopefully thats the end of it & I can sell the car!
#59: Re: Erattic idle 2001 GTi - Fault codes read Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Fri Feb 11, 2011 4:00 am ---- put mine back on last night, doesnt really seem to have sorted the problem, i put it back with new seals and stuff so that means that its not an air leak..
does feel a bit smoother but thats probably because i cleared out all the crap.
what code reader was it that you bought chris??
#60: Re: Erattic idle 2001 GTi - Fault codes read Author: CD-B3, Location: Salisbury / New ForestPosted: Fri Feb 11, 2011 4:05 am ---- I'm just borrowing it.
It's an OBDII scanner, I'm pretty sure it's this: cgi.ebay.co.uk/U480-OB...2a050e464e
I tried changing the lambda sensor but its seized, letting it soak in WD40 and I'll have another go this weekend.
#61: Re: Erattic idle 2001 GTi - Fault codes read Author: Kersh, Location: Bridgnorth, Nr WolverhamptonPosted: Fri Feb 11, 2011 4:18 am ---- great, thanks just ordered one.
hopefully it can enlighten me as to whats going on..
#62: Re: Erattic idle 2001 GTi - Fault codes read Author: CD-B3, Location: Salisbury / New ForestPosted: Mon Feb 21, 2011 5:20 am ---- Solved - Replaced the front 02 sensor. All good now!
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