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ALS clutch cut issue

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hardcorandy

10+ Year Contributor
174
1
Oct 22, 2010
Brandamore, Pennsylvania
So i wired the clutch cut in my 90 a few months back. Everything was dialed in and worked great. As of last week my car has started sending itself into anti-lag in every gear at 4800 rpm. I logged what was going on and all the sudden the clutch switch goes from 1 to 0 mid pull at 4800to 5300 then back to 1. Something isnt right.

I made sure the switch is adjusted. Ill check the ground but im gonna turn off the NLTS/ALS for the time being i guess. Any input?
 
You're confusing NLTS for ALS, ALS doesn't need any extra wiring for it to work but NLTS does.

That being said, does your foot happen to be resting on the clutch pedal? When I first installed mine my first track experience was terrible. Even though the clutch was disengaged and I was WOT I'd rest my foot on the clutch pedal and it was just enough to engage NLTS. I never could get my heavy ass left foot off the pedal going down the track so I ended up wiring my NLTS to my clutch starter switch which is at the bottom of the pedal throw. Doing this ENSURES that I'm trying to actually shift when NLTS is activated.

Recommend you do the same, then invert the signal through Link under "Misc" tab.

:dsm:
 
I had inverted the signal and all that. I disabled the switch and the problem is still there. So I was totally wrong on what the problem is. I dont log my wideband but while the car is breaking up in the 300 rpm range, i get a lean spike of 12.9 then drops back to 10.7-10.9. Here is a log. What do i need to do to fix this thread? LOL Thanks. Again the problem is every gear, same rpm
 

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I see nothing wrong with that log, nothing indicates that ALS/NLTS is being activated between 4.8k - 5.3k. It looks like a nice clean pull all the way to 6k when you depressed the clutch after letting off the throttle.

:dsm:
 
It feels like its dropping a cylinder at 4300. Itll backfire and then take the hell off. I dont get it. I put a fresh set of plugs in it and the problem when away for a day then came back. I use BR7ES's gapped .022

In the log, do you see where maf raw drops off from 1700 to 1400hz in the pull?


*EDIT* Turns out my injector clip has been coming loose. Was just weird how it was every gear same rpm. Sounded like it wanted to antilag.
 
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