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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 10-07-2004, 11:26 AM
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Hmmm, a while back I complained about my car when you pull away - it was doing it at the start of the journey but now she is doing it all the time

The symptoms are that when you pull away in first gear she doesnt pull away smoothly - the engine feels restricted and although she kangaroos it doesnt feel like the clutch is slipping - it feels like she is going to stall then whoomph then stall then whoomph - anyway you put her in 2nd gear and she feels fine again

I definitely cant give her any gas in 1st gear without this happening

This is a 94 318is manual btw - is it the clutch or engine management or a mechanical fault with the engine

It seems that this has happened since I had a chip fitted - although because I had the chip fitted I did drive her a little harder than normal in my quest to beat everything on the road!

I have since replaced the chip with the original but it is still doing it

Any ideas?

Thanks a kajillion in advance

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#2 (permalink) Old 10-07-2004, 02:03 PM
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I don't want to insult your driving techniqes. However, are you giving enough gas when letting off the clutch in first gear? Keep in mind the 318 doesn't have much low end torque, you would need to give it more gas than usual and actually "slip" the clutch purposely to give it a smooth start. If you just dropped the clutch, the car would stall. On a 318, even if you tried to do a peel out, you would have to slip the clutch, dumping the clutch would only make the car stall. Anyways, I upgraded to the M3 clutch for this reason, I hate how much the stock clutches slip and overheat.

If that isn't the case, you should check your spark plugs and replace them if necessary. You could be getting some misfire. Check ignition coils and ignition wires as well for tears or corosion.

If you say it only happens in first gear, I can't come up with anything else. It could be your driving habbits. Get someone else who has driven manual for a long time and see if they have that problem too. Does your idle bounce up and down a lot? A faulty alternator could also cause bad idle and sometimes even poor accleration.

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#3 (permalink) Old 10-08-2004, 04:43 AM
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Thanks Bry,

In answer to your questions...I have had the car since March! I have an advanced driving license in the UK and can drive my ass off! I've never had this problem before - it's definitely not operator error - no offence taken!!

Feathering the clutch does help but this is needed way too much and at too high revs - when I start off in first the car starts jumping at 2000 rpm - if I push any harder it gets worse - if I feather the clutch I have to feather it all the way up the gear - so what I have to do is pull off in first and then one second later I have to put it straight into 2nd gear

Is this a better explanation?

Normally with clutch slippage you get some slip in other gears - this is definitely only first gear

Could the chip I put in have affected the ECU - when I rang the guy who sent it to me he said it sounded like the car is in "limp mode" but what is limp mode and how does it affect the car?

Thanks J

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#4 (permalink) Old 10-08-2004, 04:44 AM
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Oh, and my idle is rock solid at 800 rpm - never even wiggles

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#5 (permalink) Old 10-08-2004, 10:35 AM
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Quote:
Originally posted by BLACKBMW@Oct 8 2004, 02:43 AM
Thanks Bry,

In answer to your questions...I have had the car since March! I have an advanced driving license in the UK and can drive my ass off! I've never had this problem before - it's definitely not operator error - no offence taken!!

Feathering the clutch does help but this is needed way too much and at too high revs - when I start off in first the car starts jumping at 2000 rpm - if I push any harder it gets worse - if I feather the clutch I have to feather it all the way up the gear - so what I have to do is pull off in first and then one second later I have to put it straight into 2nd gear

Is this a better explanation?

Normally with clutch slippage you get some slip in other gears - this is definitely only first gear

Could the chip I put in have affected the ECU - when I rang the guy who sent it to me he said it sounded like the car is in "limp mode" but what is limp mode and how does it affect the car?

Thanks J

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Limp mode is basically the computers fail safe mode. It will keep running this way until a problem is fixed such as something that would cause a "check engine" light. When my computer is in limp mode, the fuel mixture usually burns very rich. What brand of chip did you put into your car? It's not difficult to swap chips. If you still have your stock chip, just pop it back into your computer and see if that fixes the problem.

Is your check engine light on? Either way, you should check for loose or punctured vaccum hoses, faulty oxygen sensors or damaged ignition parts. When you rev up in neutral, do the RPM's come back down smoothly?

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#6 (permalink) Old 10-08-2004, 11:33 AM
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Hi thanks Bry for your help and replies

Yes I put the original chip back in and it continues to do this

I noticed when the performance chip (dinan copy) went in that in neutral the revs would drop back smoothly until about 1400 rpm when it would stop slightly and then return all the way normally...

I am sure it is still doing this but I will check later

Also, I dont have any check lights - only an oil service light - but I have checked the levels and these seem fine and surely the oil wouldnt affect only first gear?

Does this narrow it down?

hmmm

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#7 (permalink) Old 10-12-2004, 08:36 AM
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bumpity

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#8 (permalink) Old 10-12-2004, 11:00 AM
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You know what? Your problem is sounding more & more like mine now... used

I went for a drive at lunch time & it was fine, felt like it was struggling a little bit at one point but I think that could have been my paranoia as i was looking for any tiny thing that could be wrong.

The only thing I can think of that could be causing it is my own driving - I gave it a bit of a thrashing on Sunday night, down to Dover & back home (150miles) mostly at 100mph... but then if that was the problem surely I would have had a jumpy start on Monday morning, not Tuesday morning.

Fuck man, I dunno used

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#9 (permalink) Old 10-12-2004, 11:07 AM
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Someone mentioned in your post about it being the same hill - this is weird because when I leave my car park space at work I have to use an exit ramp which is a steep incline - my car definitely does it worst here - then it is bad for the next few 1st gear changes then it seems ok!

Somebody hellllllllp!!!

J...

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#10 (permalink) Old 10-13-2004, 10:45 AM
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I'm convinced now that its not the clutch as it doesnt feel like slip at all - it feels like the engine is being starved of fuel or air (or both) - I had a Fiat years ago that had clutch slip and this is completely different

I have now checked all the hoses etc and cleaned out the throttle body - I will have a look at the air filter at the weekend - could this need replacing?

Actually now that I think about it I dont think the ramp is the problem - I think that giving it more gas to get up the ramp is the problem

She just hates any gas in 1st gear it seems - any solutions or has anyone other than eboy solved/had this problem?

This is a biyatch - especially when some turd wants to race you at the lights!

Tx

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#11 (permalink) Old 10-14-2004, 08:45 AM
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bumpity

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#12 (permalink) Old 10-14-2004, 09:27 AM
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I've driven really carefully over the last few days (even though some twat crashed into me!) and now I'm no longer having the problem.
Don't know if that's connected at all - blackbmw are you still driving lack you stole it?

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#13 (permalink) Old 10-14-2004, 11:13 AM
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Quote:
Originally posted by BLACKBMW@Oct 13 2004, 08:45 AM
I'm convinced now that its not the clutch as it doesnt feel like slip at all - it feels like the engine is being starved of fuel or air (or both) - I had a Fiat years ago that had clutch slip and this is completely different

I have now checked all the hoses etc and cleaned out the throttle body - I will have a look at the air filter at the weekend - could this need replacing?

Actually now that I think about it I dont think the ramp is the problem - I think that giving it more gas to get up the ramp is the problem

She just hates any gas in 1st gear it seems - any solutions or has anyone other than eboy solved/had this problem?

This is a biyatch - especially when some turd wants to race you at the lights!

Tx

J...
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Whats up dude.. I have not been on the board for a while been really busy with work and such. I agree, does not sound like clutch, however as a general rule first gear is very telling of problems, and while the problem doesn't really go away, it does often get masked by higher RPM, inertia, and the fact that the highest load is experineced getting the car to start moving. Proof of this is your ramp issue, and even greater load from a dead stop.

now did you reset your computer? disconnect your battery to clear codes? Possibly shock your ECM with static when you changed your chip?

Once you rule out ECM... now you need to look at your plugs and see if they are fouled. better yet pull one or tweo now and see if they are either wet or blackedned with carbon, indicating a too rich mixtue which could be caused by your ECM being in limp home mode as someone else mentioned.

Ping me privately if you dont solve the problem, as i really dont have the time to devote to this forum that I had before.

Good luck
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#14 (permalink) Old 10-14-2004, 12:16 PM
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s'up nyc -long time!

"now did you reset your computer? disconnect your battery to clear codes? Possibly shock your ECM with static when you changed your chip?"

1) when you say reset your computer do you do this by disconnecting the battery?

2) if yes to the above how long do you disconnect for - I was told that when I changed my chips about to disco for 10 mins then put in chip then idle the car for ten minutes - is that correct

3) i grounded myself when i changed the chip and nothing else seems to be affected at all - in fact she is running perfectly apart from this initial problem - pulls as hard as ever!

4) if the plugs are showing a rich mixture then what can I do - change the plugs but what to do to remedy the limp mode thang?

tx

J...

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#15 (permalink) Old 10-14-2004, 12:17 PM
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Did you remove the extra negative battery terminal infront of where the ECU goes before you installed? If not did the ECU bump it on it's way in or out?
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