Cold Start High Revs Exige S - LotusTalk

dawind · 03-02-2008, 12:59 AM

Starting my Exige from a cold start it starts instantly but revs to 3000rpm without any throttle input. This can't be good for the engine. Dealer reprogramed but no change in starting. Any suggestions?

Thanks

JuBond · 03-02-2008, 01:20 AM

What year is your Exige S? Any other problems that you know of, even stuff the dealer (or you) have already fixed?

dawind · 03-02-2008, 08:48 PM

2007 NO OTHER PROBLEMS.

charliex · 03-02-2008, 10:16 PM

vacuum leak, bad maf, etc. there are a few threads on it, try looking for "high idle"

dawind · 03-03-2008, 05:32 PM

Charlie

If it was a manifold/vacuum leak wouldn't I have probs at other times? I only have a prob when starting the car cold. No problem when warm, although would be less worisome with the car warm anyway. I did not see similar probs in when searched "high idle"
Thanks for your input.

David

charliex · 03-03-2008, 05:35 PM

Did you have the latest flash installed by the dealer?

A decent sized leak will cause noticeable issues everywhere.

My S stumbles a bit on very cold starts, its emissions related.

pete k · 03-03-2008, 06:53 PM

My S revs up when cold also. I just thought it was normal. After about 10 seconds it comes back to normal.

dawind · 03-05-2008, 11:29 PM

Reving to 3k when stone cold can't be good for the motor. No oil circulating yet

Ken Wright · 03-06-2008, 06:04 AM

Mine does exactly the same thing and has since it was new. Happens when less than about 40 F.

I've turned the car on and let the fuel pump come up to pressure and left it there for several seconds before punching the button and this seems to decrease the RPM it goes to.

I've been told that this is for emissions. I agree that it is certainly not good for the motor.

big_peaches · 03-06-2008, 12:10 PM

Mine does it too.

Nugget9k · 03-06-2008, 01:02 PM

I haven't started mine up in months, but I don't think my 2007 S has ever revved up to 3k on a cold start. I will keep an eye on it when I get it out in a month. I can't wait!!!!

Svetlankas Toy · 03-09-2008, 10:39 AM

Mine does it as well...2007 Exige S.

I have a tendency to run the ignition on, wait a few sec's for the fuel pump et al to come on...then bump it....

Revs over 1K at start...and fluctuates a bit..but, have not hit the 3k mark yet....

Still seems a bit high, and knowing Lotus factory....it will take a dealer trip or two to work out....(oh joy!)

2007 Aspen White Exige S (this time around!)

big_peaches · 03-09-2008, 01:43 PM

think al try this........once its warm it has no problem....never goes past 1k

robains · 03-17-2008, 04:33 PM

Yep, my 2007 Exige S does this also and I'm not using the Stock ECU, I've got the FF EFI power package setup.

I've been told this is normal, I've been this is NOT normal. It doesn't always do it either. Sometimes it's 1500-2000, sometimes it's 3000, sometimes it's 1000. If this were a vacuum leak it would be consistantly doing the same thing every time. So I don't think it is vacuum related.

I believe the only significant input going to my stand alone EFI is the throttle position -- FF/Casey feel free to correct me.

From the rumor mill, the fly by wire throttle unit used in the Lotus (or at least in the '07 Exige) is not of very good quality -- I can't confirm nor deny this as I just don't know. But during my dyno tuning the throttle position indicator was fluctuating pretty significantly with NO one in the car. I believe Casey tried to compensate for this fluctuation -- not exactly sure how.

It will be interesting to see if the '08's have the same problem -- anyone called a Lotus dealer to get part numbers of the throttle units for '07 and '08 Exige S?

shay2nak · 03-17-2008, 10:55 PM

never noticed. I think mines always at 1k (gotham). Sometimes I'll rev it at a red light to 3k for a short time.

big_peaches · 03-21-2008, 02:23 PM

Quote:

Originally Posted by robains

Yep, my 2007 Exige S does this also and I'm not using the Stock ECU, I've got the FF EFI power package setup.

I've been told this is normal, I've been this is NOT normal. It doesn't always do it either. Sometimes it's 1500-2000, sometimes it's 3000, sometimes it's 1000. If this were a vacuum leak it would be consistantly doing the same thing every time. So I don't think it is vacuum related.

I believe the only significant input going to my stand alone EFI is the throttle position -- FF/Casey feel free to correct me.

From the rumor mill, the fly by wire throttle unit used in the Lotus (or at least in the '07 Exige) is not of very good quality -- I can't confirm nor deny this as I just don't know. But during my dyno tuning the throttle position indicator was fluctuating pretty significantly with NO one in the car. I believe Casey tried to compensate for this fluctuation -- not exactly sure how.

It will be interesting to see if the '08's have the same problem -- anyone called a Lotus dealer to get part numbers of the throttle units for '07 and '08 Exige S?

Had you read my post directly above you, you will have noticed that i have an 08 and have the same problem.....

LBC111 · 03-21-2008, 03:31 PM

Hmmm.. Mine seems to vary quite a bit also.

EpRAnGia · 03-21-2008, 03:37 PM

I have a '08 S240 and it idles ~1k until it warms up and goes down to ~800ish. However, when I drive the car in a traffic and have to push the clutch in to stop at low speed on 1st gear, the engine revs itself to 1500~2000rpm with no gas input... is this normal?
Also, the car dies on stop sometimes; it idles roughly and shuts off without any reason ... after driving for a while its doing it less but it still does.
Do I need a reflash from the dealer?... or is there one for S240?

robains · 03-21-2008, 10:32 PM

Ugh, looks like Lotus need to address this in a big way.

And please nor more BS about the type of fuel used, etc. etc. Lets get the to the real reason this is happening and IF a solution is doable.

I still maintain it is the throttle sensor or something related that is causing this problem.

EpRAnGia · 03-22-2008, 06:47 AM

Quote:

Originally Posted by robains

Ugh, looks like Lotus need to address this in a big way.

And please nor more BS about the type of fuel used, etc. etc. Lets get the to the real reason this is happening and IF a solution is doable.

I still maintain it is the throttle sensor or something related that is causing this problem.

Would keep calling them about the problem make them to address it?

03-02-2008, 12:59 AM	#1 (permalink)
dawind Registered User Join Date: Nov 2006 Location: Los Gatos,Ca Posts: 18	Cold Start High Revs Exige S Starting my Exige from a cold start it starts instantly but revs to 3000rpm without any throttle input. This can't be good for the engine. Dealer reprogramed but no change in starting. Any suggestions? Thanks

03-02-2008, 08:48 PM	#3 (permalink)
dawind Registered User Join Date: Nov 2006 Location: Los Gatos,Ca Posts: 18	2007 NO OTHER ISSUES 2007 NO OTHER PROBLEMS.

03-02-2008, 10:16 PM	#4 (permalink)
charliex disproving HD MTBF daily Join Date: Feb 2005 Location: Las Vegas , NV Posts: 8,290	vacuum leak, bad maf, etc. there are a few threads on it, try looking for "high idle" __________________ Black Exige S - http://goth.am 265 Mule / Elan M100 ECU Tuning, http://www.elisetalk.com/forums/showthread.php?t=39660 Arguing with an engineer is like wrestling with a pig in mud. After a while, you realise the pig is enjoying it.

03-03-2008, 05:32 PM	#5 (permalink)
dawind Registered User Join Date: Nov 2006 Location: Los Gatos,Ca Posts: 18	Hight rev with cold start Charlie If it was a manifold/vacuum leak wouldn't I have probs at other times? I only have a prob when starting the car cold. No problem when warm, although would be less worisome with the car warm anyway. I did not see similar probs in when searched "high idle" Thanks for your input. David

03-03-2008, 05:35 PM	#6 (permalink)
charliex disproving HD MTBF daily Join Date: Feb 2005 Location: Las Vegas , NV Posts: 8,290	Did you have the latest flash installed by the dealer? A decent sized leak will cause noticeable issues everywhere. My S stumbles a bit on very cold starts, its emissions related. __________________ Black Exige S - http://goth.am 265 Mule / Elan M100 ECU Tuning, http://www.elisetalk.com/forums/showthread.php?t=39660 Arguing with an engineer is like wrestling with a pig in mud. After a while, you realise the pig is enjoying it.

03-02-2008, 01:20 AM	#2 (permalink)
JuBond Registered User Join Date: Apr 2007 Posts: 18	What year is your Exige S? Any other problems that you know of, even stuff the dealer (or you) have already fixed?

03-03-2008, 06:53 PM	#7 (permalink)
pete k Registered User Join Date: Jul 2005 Location: San Diego Posts: 595	My S revs up when cold also. I just thought it was normal. After about 10 seconds it comes back to normal.

03-05-2008, 11:29 PM	#8 (permalink)
dawind Registered User Join Date: Nov 2006 Location: Los Gatos,Ca Posts: 18	cold sart rev Reving to 3k when stone cold can't be good for the motor. No oil circulating yet

03-06-2008, 06:04 AM	#9 (permalink)
Ken Wright Registered User Join Date: Jul 2006 Posts: 417	Mine does exactly the same thing and has since it was new. Happens when less than about 40 F. I've turned the car on and let the fuel pump come up to pressure and left it there for several seconds before punching the button and this seems to decrease the RPM it goes to. I've been told that this is for emissions. I agree that it is certainly not good for the motor. __________________ All torque, no traction...Exige S. Real sports cars don't have A/C!

03-06-2008, 12:10 PM	#10 (permalink)
big_peaches Registered User Join Date: Dec 2007 Location: County Durham, England Posts: 76	Mine does it too. __________________ MY08 INTERCOOLED EXIGE S IN STARLIGHT BLACK WITH TOURING PACK A/C AND T/C

03-06-2008, 01:02 PM	#11 (permalink)
Nugget9k Computer Dude Join Date: Jun 2006 Location: Paxinos, Pa Posts: 357	I haven't started mine up in months, but I don't think my 2007 S has ever revved up to 3k on a cold start. I will keep an eye on it when I get it out in a month. I can't wait!!!! __________________ 2007 Exige S - Laser Blue

03-09-2008, 10:39 AM	#12 (permalink)
Svetlankas Toy Registered User Join Date: Nov 2005 Location: San Francisco, CA USA Posts: 56	Mine does it as well...2007 Exige S. I have a tendency to run the ignition on, wait a few sec's for the fuel pump et al to come on...then bump it.... Revs over 1K at start...and fluctuates a bit..but, have not hit the 3k mark yet.... Still seems a bit high, and knowing Lotus factory....it will take a dealer trip or two to work out....(oh joy!) 2007 Aspen White Exige S (this time around!) __________________ Fly Fast, Fly low, and keep the ECM turned up to 11!

03-09-2008, 01:43 PM	#13 (permalink)
big_peaches Registered User Join Date: Dec 2007 Location: County Durham, England Posts: 76	think al try this........once its warm it has no problem....never goes past 1k __________________ MY08 INTERCOOLED EXIGE S IN STARLIGHT BLACK WITH TOURING PACK A/C AND T/C

03-17-2008, 04:33 PM	#14 (permalink)
robains 2007 Exige S Join Date: Jul 2007 Location: CA, Bay Area Posts: 816	Yep, my 2007 Exige S does this also and I'm not using the Stock ECU, I've got the FF EFI power package setup. I've been told this is normal, I've been this is NOT normal. It doesn't always do it either. Sometimes it's 1500-2000, sometimes it's 3000, sometimes it's 1000. If this were a vacuum leak it would be consistantly doing the same thing every time. So I don't think it is vacuum related. I believe the only significant input going to my stand alone EFI is the throttle position -- FF/Casey feel free to correct me. From the rumor mill, the fly by wire throttle unit used in the Lotus (or at least in the '07 Exige) is not of very good quality -- I can't confirm nor deny this as I just don't know. But during my dyno tuning the throttle position indicator was fluctuating pretty significantly with NO one in the car. I believe Casey tried to compensate for this fluctuation -- not exactly sure how. It will be interesting to see if the '08's have the same problem -- anyone called a Lotus dealer to get part numbers of the throttle units for '07 and '08 Exige S?

03-17-2008, 10:55 PM	#15 (permalink)
shay2nak GGM ENFORCER Join Date: Dec 2003 Location: Land of da 1000 Oaks, CA Posts: 12,750	never noticed. I think mines always at 1k (gotham). Sometimes I'll rev it at a red light to 3k for a short time. __________________ save ~10 lbs gain 1 hp EQ: Y=(190X) / (1984-X) where Y is (HP) and X is (lbs) '07 GG EXIGE S * MY CAR ** VIDEO CLIPS! '08 ACURA TSX 6-speed http://www.makeNYNYagain.com

03-21-2008, 03:31 PM	#17 (permalink)
LBC111 Dan D Join Date: Aug 2005 Location: Long Beach, CA Posts: 1,303	Hmmm.. Mine seems to vary quite a bit also. __________________ 07 Exige S: GG, Track Pack, V1, RV Camera, S111 CF roof and splitter, 4.5-lb Voltphreaks battery, 10-lb Von Hep Exhaust, Green filter, 265 crank hp +/-, Volk TE 37 Wheels, RTDbrace, Scroth 6-point ASM harnesses, W2A IC to come??, 1965 lbs total weight (est) 05 Elise: Storm Titanium, Sport, Touring, Stage II (SOLD) (May '05 - Sept '06)

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03-21-2008, 03:37 PM	#18 (permalink)
EpRAnGia Registered User Join Date: Feb 2005 Posts: 203	I have a '08 S240 and it idles ~1k until it warms up and goes down to ~800ish. However, when I drive the car in a traffic and have to push the clutch in to stop at low speed on 1st gear, the engine revs itself to 1500~2000rpm with no gas input... is this normal? Also, the car dies on stop sometimes; it idles roughly and shuts off without any reason ... after driving for a while its doing it less but it still does. Do I need a reflash from the dealer?... or is there one for S240?

03-21-2008, 10:32 PM	#19 (permalink)
robains 2007 Exige S Join Date: Jul 2007 Location: CA, Bay Area Posts: 816	Ugh, looks like Lotus need to address this in a big way. And please nor more BS about the type of fuel used, etc. etc. Lets get the to the real reason this is happening and IF a solution is doable. I still maintain it is the throttle sensor or something related that is causing this problem.