I posted about my misfiring a few days ago. well it did it again slightly, I turned off the TC by the dial and then accelerated and it was fine. Turning is on again I slowed down and accelerated again and it started to miss fire.

Ovbiously a problem with the TC.

What do you guys recon? Could it be this dodge soldering on the ABS that I did. But I thought if its on its on and works all the time. COuld it be a bad TC box?

Any one? Even if you dont know for sure, tell me what you think.

 

Stuart

Stuart - this could be a number of things! Have you tried doing the calibration again??? If this doesn't work, try checking those connections to the abs. Suppose it could be a dodgy box but VERY much doubt it

 

Hope this is of some help...

 

CheerZ,

 

Andy

Cheers!

SRRAE

 

When you say it "miss-fires", how much does it misfire ? a LOT?

 

If it does misfire a LOT and it doesn't misfire at all with the system switched off, I reckon this might simply because you haven't got the correct settings for the 3 cut tables. i.e soft-cut table, medium-cut table, hard-cut table.

(See andyp's screenshots in the thread "TC settings"). The bit i'm talking about is the rows of "check-boxes". A 'tick' means a fuel-injector firing, a 'blank' means 'fuel-injector not firing'.

 

ask andyp for more details on how you can check this out and correct as necessary. I would certainly do that before presuming that it's dodgy soldering.

Yes it does it a lot. When I turn if off via the dial it works fine. I ran talemetry via a laptop and it showed me wheel 0 was flucktuating, only getting a signal from the wheel for a fraction of a second. All the other wheels are fine, all showing roughy the same amount of turn, taking into account turning and stuff. But wheel 0 line is going and down on the screen. Mostly there is no signal at all but then it goes up and down.

 

 

Indicative of poor connection or dodgy sensor I reckon. Check your soldering first.

yep if you've taken a look at the trace and it clearly shows that it does souns like a badly soldered joint or an ABS sensor that's not working properly or has a loose connection. Looks like you'll have to check out your soldering to the ABS sensors, and then go from there.

I would start by checking that your system was setup for a 300zx.

 

6 cylinders instead of 4!

Here is my log if anyone wants to look and tell me what they think. Its from using the TC disc from RaceLogic http://www.300zx.co.uk/rides/srrae/stu.log

Thanks for your help guys

 

Stuart

 

 

Stuart

 

Checked out your log file in the TRACLOG software and it DEFINITELY looks like a dodgy ABS sensor on 1 wheel. It seems to work *most* of the time but every now and then it drops out.

In fact on page 58 of the Racelogic manual it's got a picture almost exactly the same as your trace. It says "the above screen shows a sensor dropping out. This could be down to the sensor not being close enough, not at 90 degrees to the pick-up point or the sensor no being mounted securely."

(They were primarily talking about ABS sensors that people may have fitted themselves to non-ABS cars here).

 

So it looks very much like one of your ABS sensors has a loose wire, or the sensor itself has worked loose, or one of your soldered connections is dry-jointed etc.

I would check first of all the soldered connections, re-soldering them if one of them doesn't look good. try to identify which ABS connection it is.

Only move on to looking at the ABS sensor itself if the above doesn't work.

 

cheers

Stu