Stuttering slut

Markie · 20th November 2005, 10:32 PM

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All,

Just wondering if anyone knows whats the following may be caused by:

First time for a while the Supra was outside in the front last night.. But the day before I reset the ECU for the cold weather.

Anyways, this morning she started up fine and drove ok for about a mile then started shuddering/jerking.. Put the throttle down a little and after a minute it started to behave ok again - Had a ticking in the back passenger side also.

Got back and the car was left for about 3 hours. Got in her again and the same thing happened, no ticking this time, but the shuddering and jerking was back, but then gone after a minute or so..

Finding it really odd - any ideas please?
Feels like its slightly misfiring now and again also..

Suprash · 21st November 2005, 03:41 AM

I havent a clue what that could be, but then I do know feck all but I know mine sometimes especially when lifting off the excelerator at the point the engine is dead-half warm she jumps slightly if thats a good expression. I presume this is something to do with the automatic choke/idle control adjusting as the egine is getting warm, but yours sounds far worse, more of a jult then a slight jump.......

......sorry nights are boring........

Martin F · 21st November 2005, 07:09 AM

How many hours driving time has there been since you reset the ECU ?

Markie · 21st November 2005, 08:49 PM

About 3 hours and about 200 miles.. She has always been fine before.

Martin F · 21st November 2005, 09:28 PM

In that case sorry not really sure what it may be.

What i would do is go for a drive for about 20mins, trying to vary my driving style (high load in high gear, rev through the range, etc) and see if the ECU has perhaps not learn't things correctly. If this doesn't work then you'll need to start looking at things systematically, plug, hoses, ignition system etc.

When the car was shuddering was it because the revs were too low and it was about to cut out ?

Cuthbert · 21st November 2005, 11:10 PM

If you drive straight from cold the car will will a little lumpy & jerky on light throttle. What mod's do you have?

21st November 2005, 03:41 AM	#2
Suprash Sex, drugs and Hardhouse Jap Spec RZ-S - Manual Join Date: Sep 2003 Location: Basingstoke, Hants. Posts: 1,576	I havent a clue what that could be, but then I do know feck all but I know mine sometimes especially when lifting off the excelerator at the point the engine is dead-half warm she jumps slightly if thats a good expression. I presume this is something to do with the automatic choke/idle control adjusting as the egine is getting warm, but yours sounds far worse, more of a jult then a slight jump....... ......sorry nights are boring........ __________________ Supra TT 6spd Hybrid turbos,full de-cat,HKS Hyper,Blitz Induction kit,Apexi Boost & EGT gauge,Southbend clutch,Lightened flywheel,Goodridge steel brake lines,Walbro pump/FSE & AFR,Racing hart wheels,Blitz skirts and a Bomex front.

21st November 2005, 07:09 AM	#3
Martin F Administrator UK Spec - Manual Join Date: Aug 2003 Location: Essex, UK Posts: 10,226	How many hours driving time has there been since you reset the ECU ? __________________ Martin UK6TT + Bits & Bobs 'Remember folks, the inside lane isn't just for Xmas' MSOC FAQ MSOC Members Discounts MSOC Resources

21st November 2005, 09:28 PM	#5
Martin F Administrator UK Spec - Manual Join Date: Aug 2003 Location: Essex, UK Posts: 10,226	In that case sorry not really sure what it may be. What i would do is go for a drive for about 20mins, trying to vary my driving style (high load in high gear, rev through the range, etc) and see if the ECU has perhaps not learn't things correctly. If this doesn't work then you'll need to start looking at things systematically, plug, hoses, ignition system etc. When the car was shuddering was it because the revs were too low and it was about to cut out ? __________________ Martin UK6TT + Bits & Bobs 'Remember folks, the inside lane isn't just for Xmas' MSOC FAQ MSOC Members Discounts MSOC Resources

21st November 2005, 11:10 PM	#6
Cuthbert Old Timer UK Spec - Auto Join Date: Sep 2004 Location: dorset Posts: 1,880	If you drive straight from cold the car will will a little lumpy & jerky on light throttle. What mod's do you have? __________________ Cuth. "Beer is proof that God loves us & wants us to be happy" - Benjamin Franklin "Badger beer is the best" - God

20th November 2005, 10:32 PM	#1
Markie Junior Member Join Date: Oct 2005 Location: Wales Posts: 12	-------------------------------------------------------------------------------- All, Just wondering if anyone knows whats the following may be caused by: First time for a while the Supra was outside in the front last night.. But the day before I reset the ECU for the cold weather. Anyways, this morning she started up fine and drove ok for about a mile then started shuddering/jerking.. Put the throttle down a little and after a minute it started to behave ok again - Had a ticking in the back passenger side also. Got back and the car was left for about 3 hours. Got in her again and the same thing happened, no ticking this time, but the shuddering and jerking was back, but then gone after a minute or so.. Finding it really odd - any ideas please? Feels like its slightly misfiring now and again also..

21st November 2005, 08:49 PM	#4
Markie Junior Member Join Date: Oct 2005 Location: Wales Posts: 12	About 3 hours and about 200 miles.. She has always been fine before.

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