saxo 1.1i revs idle on 5000 rpm!!! [Archive] - Saxperience

stehno

3rd March 2012, 17:34

Hi, my cars driveing me mad, swapped batterie after it went flat, recharged bat and now revs shoot up to 5000 rpm when i turn the key, changed icv, throttle sensor, lambda ,temp coolent sensor, still no change, throttle cable ok , can see no leaks anywhere, realy am fed up with it, just want to no if anyone has had the same and fixed it.

adamspencer

3rd March 2012, 19:34

year is your car? You said 'throttle cable' but more modern(er) saxos have throttle position sensor

Bhamjez

3rd March 2012, 19:45

I have same prob with my 1.4 done a temp fix by blocking the top half of throttle body with red gasket seal my car stays steady at 1000rpm from what i've read u also need to consider the crankshaft sensor and the map sensor and also the throttle position sensor hope this helps and good luck

t-dogg

3rd March 2012, 19:57

check the inlet many, i had the same problem with mine, apart mine reved up to 7000. Inlet manifold might be a bit loose or try the seals round it.

adamspencer

3rd March 2012, 20:11

yeah anything that will let extra air into the inlets in summary could cause this

stehno

3rd March 2012, 20:58

thanks for all advice, ive got 2 throttle bodys that i try on it, both do the same, my cars a 2003 desire.

stehno

3rd March 2012, 21:00

hi mate had the inlet manifold off to fit a new cat the other day , when lambda sensor snapped off , all manifold is nice and tight.

t-dogg

3rd March 2012, 21:06

the inlet manifold is behind the engine block, the part is around icv

http://i1101.photobucket.com/albums/g428/rallysaxo/488ea1a8.jpg

stehno

3rd March 2012, 21:27

are they easy to get off mate? and many thanks for your help.

emmeff

3rd March 2012, 22:18

Stehno. Check/change the crank sensor. No idea where it is on a mk2 though. I have a mk1.

Also reset the ICV after removing the battery or ECU. Turn the ignition to the red lights 6 times and start on the seventh. Should reset the ICV position.

Might work.

porkie77

11th March 2012, 17:19

Cuzza12345

12th March 2012, 05:29

Make sure no air is trapped in your cooling system which can cause high revs, irratic idling can be cause by so much stuff its a case of trial and error dude I had this with my car and eventually just replaced everything at the same time lol

Cuzza12345

12th March 2012, 05:30

Check for air leaks across the inlet mani and see that your throttle cable isn't too tight causing your idle valve to stick open, have you changed your idle control?

jakesc

12th March 2012, 08:41

u said you have a new battery? might sound stupid but check that the positive and negative have good secure contact to the terminals. my car was idling like yours and turns out the negative was a tad loose. got a new clamp for the terminal and that sorted it. I know it sounds bizarre but it sorted it, my friend had the same issue on his vts, tried the same as me and sorted! worth a try even though it sounds stupid haha

jayline

12th March 2012, 08:50

i had this problem when i bought mine and found out some one had re positioned the throttle cable by unpinning it and moving it a few slots! just have a good look at everything and see if anything looks out of place or wrong :)

Mochachino

12th March 2012, 08:53

year is your car? You said 'throttle cable' but more modern(er) saxos have throttle position sensor

So how do you think the throttle pedal moves the butterfly in the throttle body? Yes he will have a throttle cable, all saxos do.

hi mate had the inlet manifold off to fit a new cat the other day , when lambda sensor snapped off , all manifold is nice and tight.

Why did you remove the inlet manifold to put a cat on? You mean the exhaust manifold? Check the connections on the LAMBDA then.

hi mate just something that might help if battery been off ecu could have reset itself so now doesnt know the value of full throttle and idle throttle try turning on ignition put your foot flat to the floor on the throttle then take your foot off then turn ignition off . then turn ignition back on and start car
this is how you make the ecu understand the values off full and idle throttle

just a guess but may help

Incorrect, that is a load of nonsense.

u said you have a new battery? might sound stupid but check that the positive and negative have good secure contact to the terminals. my car was idling like yours and turns out the negative was a tad loose. got a new clamp for the terminal and that sorted it. I know it sounds bizarre but it sorted it, my friend had the same issue on his vts, tried the same as me and sorted! worth a try even though it sounds stupid haha

One of the better answers in this thread.

Check earths too. Also check with a multimeter the connections to confirm there are no breaks in the wire.

Sensors to check: MAP, LAMBDA, Coolant temp,throttle position. Crank position that someone mentioned before would prevent the car from starting or give it a false red limiter at any rpm. It would effect the idle.

porkie77

12th March 2012, 09:59

Quote:
Originally Posted by porkie77
hi mate just something that might help if battery been off ecu could have reset itself so now doesnt know the value of full throttle and idle throttle try turning on ignition put your foot flat to the floor on the throttle then take your foot off then turn ignition off . then turn ignition back on and start car
this is how you make the ecu understand the values off full and idle throttle

just a guess but may help

Incorrect, that is a load of nonsense.

not nonsense at !!!!!!!all just had this problem on my saxo barrey went flat and had to be replaced doing this made the ecu reset itself when i started it idle was all over the place revving to 3000 and holding there then dropping and going up again done what i said to do and cured it straight away .......

SOME PEOPLE THINK THEY KNOW EVERYTHING !!!
but hey anything is worth a try what i said to do is free plus only takes all of 30 seconds to do !!

DONT KNOCK IT TIL YOU TRIED IT .......LOL

Mochachino

12th March 2012, 10:09

not nonsense at !!!!!!!all just had this problem on my saxo barrey went flat and had to be replaced doing this made the ecu reset itself when i started it idle was all over the place revving to 3000 and holding there then dropping and going up again done what i said to do and cured it straight away .......

SOME PEOPLE THINK THEY KNOW EVERYTHING !!!
but hey anything is worth a try what i said to do is free plus only takes all of 30 seconds to do !!

DONT KNOCK IT TIL YOU TRIED IT .......LOL

More likely a coincidence. Its a fact what you said doesn't work as it just doesn't, its like telling the OP to tap the ECU 5 times and it will start working. The saxo ECU is far from as sophisticated as that.

What the OP could try is unplugging the battery as this clears any error logs and may help. So unplug it for 15 minutes or overnight and then reconnect and try again - this isnt nonsense and is in fact a fact :y:

porkie77

12th March 2012, 10:18

More likely a coincidence. Its a fact what you said doesn't work as it just doesn't, its like telling the OP to tap the ECU 5 times and it will start working. The saxo ECU is far from as sophisticated as that.

What the OP could try is unplugging the battery as this clears any error logs and may help. So unplug it for 15 minutes or overnight and then reconnect and try again - this isnt nonsense and is in fact a fact :y:

FACT LOL

i done it yesterday on my saxo after being told to by a mechanic who works for citreon and it worked perfectly so gotta be said IT DOES WORK !!!
SORRY MATE YOU CAN STATE FACT AS MUCH AS YOU LIKE
but it works as i done it yesterday i aint posting it as something i have never done and just heard that it works ..
i have actually done it and it works !!!
so only trying to help OP
and it is free to do and like i said only takes 30 secs so whats the harm in trying ????

but hey wanna knock it maybe you can try it if you ever get the fault and see if it works ????

Mochachino

12th March 2012, 10:21

FACT LOL

i done it yesterday on my saxo after being told to by a mechanic who works for citreon and it worked perfectly so gotta be said IT DOES WORK !!!
SORRY MATE YOU CAN STATE FACT AS MUCH AS YOU LIKE
but it works as i done it yesterday i aint posting it as something i have never done and just heard that it works ..
i have actually done it and it works !!!
so only trying to help OP
and it is free to do and like i said only takes 30 secs so whats the harm in trying ????

but hey wanna knock it maybe you can try it if you ever get the fault and see if it works ????

I don't have a saxo anymore. Reverse to rewind your milage mate :y:

Mochachino

12th March 2012, 10:29

And fyi:

During idling, the ECU sets the idle speed to cater for high-drain applications (air conditioning, electrical components) by increasing the idle speed by allowing air to bypass the throttle regardless of the throttle’s position. The idle control valve (ICV), aka idle air control valve or stepper motor, allows air into the inlet manifold to speedup the idle and to help with smooth deceleration.

porkie77

12th March 2012, 10:55

And fyi:

WHATEVER MATE !!!!

i thought forums were for helping people out ??????
I JOINED THIS SITE TO GET HELP AND HELP OTHERS IF I COULD .....
but with people like you on here why would people bother ???
i tell a poster of my experience and how i cured it and all you wanna do is shoot me down !!!!!
sorry mate but you DONT KNOW EVERYTHING !!!!!
YOU HAVE NEVER TRIED IT .... I HAVE !!!!!
so sorry your logic is DODGY at best ...

all i wanted to do was offer another option for OP to try at no cost to himself as seems he has tried plenty at cost already

so sorry thats it has offended you that i am trying to help someone out
but i am sure that this is what the forum is for .......

Mochachino

12th March 2012, 10:59

porkie77

12th March 2012, 11:13

[QUOTE=Mochachino;5858128]Think you need to calm down mate, I was explaining how your method does not work, don't need to take it to heart.

The forum is full of members with experience and also members with lack of experience, ones with more experience correct the ones with less experience and know how.

It isnt my fault that you think the ECU forgets how the car works if you unplug it, why would the ECU forget the throttle position in particular and nothing else?

The triple plug ECUs when remapped can forget that map although not that common.

Anyway, Ive just taken the battery out of my laptop and I need to spin the hard drive round so it knows how fast to spin it. brb.[/QUOTEI

I AINT ONE WITH A PROB .....
MAKES ME LAUGH THAT YOU WANNA SHOOT SOMEONE DOWN JUST BECAUSE
IT IS SOMETHING THAT YOU DIDNT KNOW ...
BUT HEY LIKE I CARE REALLY IT FIXED MY CAR

lol at the little jokes seriously mate you need to grow up ....
nice to see you "experienced" site users welcomin the new users !!!!!
good way to get new members

Mochachino

12th March 2012, 11:18

Think you need to calm down mate, I was explaining how your method does not work, don't need to take it to heart.

The forum is full of members with experience and also members with lack of experience, ones with more experience correct the ones with less experience and know how.

It isnt my fault that you think the ECU forgets how the car works if you unplug it, why would the ECU forget the throttle position in particular and nothing else?

The triple plug ECUs when remapped can forget that map although not that common.

Anyway, Ive just taken the battery out of my laptop and I need to spin the hard drive round so it knows how fast to spin it. brb.

I AINT ONE WITH A PROB .....
MAKES ME LAUGH THAT YOU WANNA SHOOT SOMEONE DOWN JUST BECAUSE
IT IS SOMETHING THAT YOU DIDNT KNOW ...
BUT HEY LIKE I CARE REALLY IT FIXED MY CAR

lol at the little jokes seriously mate you need to grow up ....
nice to see you "experienced" site users welcomin the new users !!!!!
good way to get new members

I haven't got a problem either as I just explained to you that I was correcting you. Judging from the attitude you are giving over the internet and the capital letters it would suggest you have got a problem.

Im not welcoming you neither am i not making you welcome. If you cant take being corrected then I think you should grow up.

If you are going to react like this every time you are being corrected then you wont last long. ANYWAY HERE IS MY CAPITAL LETTER CONTRIBUTION.

EDIT: Il remove all the advice ive given as apparently im not welcoming noobs by giving them correct info.

porkie77

12th March 2012, 11:42

lol at it all mate your correcting me on something you have never done ...
funny how people who havent tried it will knock it

and i am sure your correcting me based on your years of dealership training at citreon ?

just want to take this opportuinity to apologise to OP
for this thread becoming what is has

sorry mate

was just ofering a consideration as i had very similar problem and fixed it this way

but i would say it is worth a try as you got nothing to lose apart from 30 seconds of your time if it works all good if not hope you find the problem soon

blacksaxodevil

12th March 2012, 12:36

hi mate just something that might help if battery been off ecu could have reset itself so now doesnt know the value of full throttle and idle throttle try turning on ignition put your foot flat to the floor on the throttle then take your foot off then turn ignition off . then turn ignition back on and start car
this is how you make the ecu understand the values off full and idle throttle

just a guess but may help

funny this worked on my car aswell, and also i used to work for citroen. so you are correct in saying this but it doesnt solve every issue its just trial and error, sometimes it will solv it sometimes it wont.

porkie77

12th March 2012, 13:23

funny this worked on my car aswell, and also i used to work for citroen. so you are correct in saying this but it doesnt solve every issue its just trial and error, sometimes it will solv it sometimes it wont.

hi mate yeah agree totally was just offering an option to try as can see from posters earlier posts that he has tried plenty of stuff so far so just thought it might be worth a try

know it wont work on every car but as its free mite aswell give it a go

mcjacko1987

13th March 2012, 09:54

did you find out what it was mate? did engine conversion over weekend and mines doing the same. struggles slightly on startup then when it does revs its nuts off to 6k. mines a mk2 vtr mind but same symptoms. batteries been off all week. the loom (engine and interior)and ecu are off a different car than the engine. so maybe my ecu doesnt know that tps setting. im going to try these ideas that have been mentioned. we checked for air leaks on mine but there is none.
my mate has a 106gti so we unplugged his tps and his decided to rev itself but up2 2500rpm. so with one thats reading wrong (like my vtr one) maybe thats why its revving fully. i'll let you know if i find the fault

minyus

15th October 2017, 14:49

hi mate just something that might help if battery been off ecu could have reset itself so now doesnt know the value of full throttle and idle throttle try turning on ignition put your foot flat to the floor on the throttle then take your foot off then turn ignition off . then turn ignition back on and start car
this is how you make the ecu understand the values off full and idle throttle

just a guess but may help

Hi,
Beleive or not this solution is working :) I had 3500rpms at idle then it lowered to 2000. Tried this trick and it is around 900 again :)
Thanks a lot...

crpt2008

30th March 2018, 09:32

Hi all
Almost all modern cars have some type of "re-initialization" process.
It differs from model to model and between brands.
Usually to be done after battery disconnection or replacement of parts involved, a good example is ICV (idle control valve) or TPS (throttle position sensor).

Please remember this engines came in several different "flavors", from carburetor to monopoint, multipoint. Same for ignition system and with or without cat... and all these system came also from different manufacturers.
So a LOT of variants. With a lot of small details particular to some versions.

Transcript of PSA procedure for Magneti Marelli G6. Can also apply to some other versions:
B - RECALAGE DU MOTEUR PAS A PAS (ICV)
Couper le contact (pendant 10 secondes).
Mettre le contact (pendants 3 secondes).
Sans accélérer, démarrer le moteur et le laisser tourner au ralenti.
C - AUTO-ADAPTIVITE DE LA RICHESSE (Mix)
Moteur chaud, température d’eau supérieure à 60°C.
Effectuer un roulage minimum de 15 minutes en utilisant les différents
régimes moteur et en particulier :
· 2500 - 3500 tr/mn,
· régime de ralenti,
· pleine charge (pendant 2 secondes)

As another example in my Mercedes if the battery is disconnected. Following system MUST be re-initialized. Radio/code, electric windows and ABS/ESP. Very simple procedure also, but has to be done.