High Revs at Idle, and Revs bounce

[ruaangrobler]

Hey guys. Just bought my 2003 330i, 123000km, 5spd - my first ever BMW (and 2nd car ever)

I have a quick question for you smart guys.

The car idles a bit high. When I stop and put the clutch in, it blurbs to about 1100rpm, and then settles to 1000rpm. Isn't this a bit high?

Also rev related. After hard(ish) driving(not breaking, just full throttle fun), I find the revs tend to 'bounce' when I put the clutch in (or in neutral) when standing still, almost like I'm gently feathering the throttle. Jumps between 1000rpm up to even 1700rpm - foot off the gass, car in neutral, standing still. This worries me a bit - doesn't seem right.

But this aside, the car is phenomenal.

 

[freerider]

As gizmo said, check for leaks on your intake after the MAF. I find that the easiest way to find these is with some carb cleaner, just spray it lightly around the intake while the car is idling, and you will quickly hear if there is a leak, the car will suddenly pickup revs if its sucking the cleaner in somewhere.

 

[ruaangrobler]

Cool, just saw that post after I put the question here. Many thanks, I'll try it as soon as I have a mo.

 

[blaze94]

Check your floor mat. My car was doing this and i realised that my floor mat was partially covering the accelerator pedal. I was letting go of the clutch but my right heel was holding the carpet in place pushing down on the accelerator pedal. Quite embarrasing.

 

[NoFear]

Check your floor mat. My car was doing this and i realised that my floor mat was partially covering the accelerator pedal. I was letting go of the clutch but my right heel was holding the carpet in place pushing down on the accelerator pedal. Quite embarrasing.

Same here, happened to me to! :mmm:

 

[e46jase]

congrats on the 330 ruaan like the boys said whole in intake is very common lower intake boot albow always tears hopefully its that coz its 180 bux from stealership.
@ ironblaz floor mats got me too!!! haha at one stage as i would shift in high revs on putting my clutch in the revs would stay up ther a little too long thought clutch was slipping turned out to be mat hahaha :/

 

[SirSparky]

your icv(idle control valve)could also be dirty and sticking.....try cleaning that aswell if the intake boot doesnt seem to be the problem

 

[clutchplate]

hmm, my car does this sometimes, but I found it just gets a little excited when I stop a certain robots....

---

just slap it slightly on the steering wheel and say.. HEYYYY!, watchit lightey...

 

[freerider]

hmm, my car does this sometimes, but I found it just gets a little excited when I stop a certain robots....

---

just slap it slightly on the steering wheel and say.. HEYYYY!, watchit lightey...

---

And here I thought that you had to plug something in to tjoon your car.

 

[clutchplate]

hahaha ! no, thats how you tjoon a girl...

 

[ruaangrobler]

Thanks oaks, I'll get to that as soon as can and report back.

Can't be my mats - got the car without any(2nd hand dealers - gotta love em). Wanna buy some asap. I'm guessing there are specific e46 individual carpets.

And I'm sure they look reeeaaaal nice.

 

[freerider]

Thanks oaks, I'll get to that as soon as can and report back.

Can't be my mats - got the car without any(2nd hand dealers - gotta love em). Wanna buy some asap. I'm guessing there are specific e46 individual carpets.

And I'm sure they look reeeaaaal nice.

wait until you see the price of those mats from the dealer :spit:

 

[Hellas]

Had some rubber Toyota mats on top of the BMW mats, but that's more of a hassle though so I too it out.

 

[ruaangrobler]

Yeah, I'm sure the price will be Reeeeaaaaal nice too

 

[Jandre]

Thanks oaks, I'll get to that as soon as can and report back.

Can't be my mats - got the car without any(2nd hand dealers - gotta love em). Wanna buy some asap. I'm guessing there are specific e46 individual carpets.

And I'm sure they look reeeaaaal nice.

wait until you see the price of those mats from the dealer :spit:

R1 100,00 per set for a E36.

Bargain if you ask me. NOOOOOTTTTTTTT!!!!

 

[///M_POW]

R1100... u must be joking....

Can only wonder what M Power mats will sell for :shocked:

 

[88RSI]

Most iregular/bad idling problems are caused by air leaks.

 

[Jandre]

R1100... u must be joking....

Can only wonder what M Power mats will sell for :shocked:

No jokes M_POW. Wanted a nice new set for my E36. Went to the agents and that's what he quoted me.

Universal floormat does not work so lekka on the drivers side.

 

[88RSI]

As gizmo said.....

Same Gizmo from DTM days? Is he still on this forum?

 

[Gandalf038]

As gizmo said.....

Same Gizmo from DTM days? Is he still on this forum?

yup.. that's the one!