Revving at own will ????

[peteT5]

After a dead battery issue and my clocks all sowing on me! She has decided to start revving her self randomly on tick over also fan switching it self on on start up?? Could this be down to the fact that I haven't replaced the clocks yet? Oh and just to make matters little worse not boosting at 1 bar decided to hold out at 0.7 ish! And ideas peeps?

[Dangerous Dave]

Have you checked all the intake piping for leaks?

Also there could be a problem with the Idle Control Valve sticking open (causing the revving)

And what's wrong with the clocks?

[peteT5]

Have you checked all the intake piping for leaks?

Also there could be a problem with the Idle Control Valve sticking open (causing the revving)

And what's wrong with the clocks?

What's the best way to check for leaks? Ive looked at the pipes and there is no visual breaks etc.

Were do I locate idol control valve and what's best poss remedy?

Clocks are caput! Checked all fuses, relays and ignition, all appear to be fine so think I just need to replace them??

[Mongo]

Check your vac aswel my tree split and that happend to me!
For boost leak either go to your local roling road place and they do a dye test for leaks if not block up your airfilter with a aerosol can or somthing make sure its tight loads of jubilee clips!!!!! Also block off dump valve to and using a compressor fill your boost pipes with the psi your running. Spray soapy water and check for bubbles if its major you will hear it.

[Dan850r]

Youll have a leak out of the hole at the bottom of the intercooler, its meant to be there

[Mongo]

[QUOTE=Dan850r;458785]Youll have a leak out of the hole at the bottom of the intercooler, its meant

O yes block that too lol

[AndysR]

If the fan is cutting in on start up I'd say that the ecu is going to fail safe due a fault somewhere. I wouldn't mind betting it's an intermittent fault which is causing your intermittent reving too.. Is the battery in good condition and well charged? It maybe something simple like a poor earth to the battery or the battery/alternator is no good.

[Shadow]

i had a similar problem with my car and it turned out to be the coolant temp sensor.

[peteT5]

Cheers peeps for all your replys gona go through them this week and will let ya know of any remedy

[peteT5]

Just to add to injury :( when I start car up for first time in the day it's spluttering also if you try to accelerate it's like car gets starved of fuel or something and revs drop causing car to almost cut out? This lasts for approximately 5 minutes then runs fine also fault in engine electronic system light has came on any ideas ?

[peteT5]

i had a similar problem with my car and it turned out to be the coolant temp sensor.

Changed thermo T**T along with temp sensor about to top up coolant along with a brew and a quick prayer in the hope that we get a good result of no fan and random revving! Hope he's looking down on the beast today ;)

[peteT5]

I believe that to be a RESULT!! :D :D however fault light still on any ideas on getting rid of this or will it go off itself mmm?

[glock19]

The DTC is recorded into the ECM. You'll need to remove ECM (or battery) for maybe an hour to clear it. If the car's in the shop, you can always erase it with a Scan Tool

About your clock, maybe some connectors behind the intruments are broken or dislodged. You'll need to open the top of the dash to check.

[jayeastanglia]

i had a similar problem with my car and it turned out to be the coolant temp sensor.

where is the temp sensor on the 850 t5? and where is the fan switch? as my fan runs all the time and for about a minute once ignition is switched off

[peteT5]

where is the temp sensor on the 850 t5? and where is the fan switch? as my fan runs all the time and for about a minute once ignition is switched off

That's sounds same problem I had sometimes the fan coming on at start to! The temp sensor is located underneath thermostat housing hence why I changed both thermostat and sensor. In my eyes saves a job in future. Resulting in no fan and running sweet again :D

[peteT5]

The DTC is recorded into the ECM. You'll need to remove ECM (or battery) for maybe an hour to clear it. If the car's in the shop, you can always erase it with a Scan Tool

About your clock, maybe some connectors behind the intruments are broken or dislodged. You'll need to open the top of the dash to check.

Yea think ill disconnect battery for a while. The clocks them selves were actually broken so replaced them. This now clocks working, this pointed out to me that the temp sensor, with the gauge randomly changing along with fan on start up was faulty. Now all changed running sweet :D

[jayeastanglia]

That's sounds same problem I had sometimes the fan coming on at start to! The temp sensor is located underneath thermostat housing hence why I changed both thermostat and sensor. In my eyes saves a job in future. Resulting in no fan and running sweet again :D

Dont suppose u know the oem part number as my localish parts place say theres 2 on there system..

[t5_monkey]

Mine revs on its own everytime a BMW comes within 20 yards...

[peteT5]

Dont suppose u know the oem part number as my localish parts place say theres 2 on there system..

The place I got parts from went off registration however number I had and gave them took them to same part which was 9186486.

[peteT5]

Mine revs on its own everytime a BMW comes within 20 yards...

Strange that I loose total control of my sense's and right foot when my car's automated idiot in BMW sensor kicks in too :) lol

[t5_monkey]

Have you noticed BMW drivers are getting more sensible nowadays ? I've noticed that...

[peteT5]

Yea think ill disconnect battery for a while. The clocks them selves were actually broken so replaced them. This now clocks working, this pointed out to me that the temp sensor, with the gauge randomly changing along with fan on start up was faulty. Now all changed running sweet :D

Happy days went to my car this evening and by surprise without even disconnecting battery the ECU has noticed fault has been rectified and removed warning light happy days :)

[Kingsford G]

Have you noticed BMW drivers are getting more sensible nowadays ? I've noticed that...

Not really.What happened?Do BMW`s come wiv an indicator switch as a basic feature now?lol

[merc85]

Have you noticed BMW drivers are getting more sensible nowadays ? I've noticed that...

Yep thats cus all the c***s drive audi's

[Kingsford G]

Yep thats cus all the c***s drive audi's

U picking on my audis again lol