Ok I decided to turbo my 96 ls. It has been headache after headache after headache. I have encountered so many problems its not funny. This problem I don't even know how to find.

~Back-story~
Parked the car to install the turbo. Installed:
255 fuel pump
550 fuel injectors
cc st2 clutch
hondata
Wideband

After turbo install took car to get exhaust and PCV evac system installed. Loaded basemap on car drove to exhaust shop. Noticed speedo not working all of a sudden.

Car ran fine. would cut off at stops, so set minimum idle to 1000 in hondata to hopefully get it to stay running. Car ignored this setting and continued to stall. Other then that ran fine.

Took car to get tuned, and as soon as dude sat down to start, car started surging idle for the first time. after 10 minutes dude got it to stop saying he adjusted battery voltage setting in hondata?!? Continued to tune car... no issues.

Finished tuning the car, and drove car home. (2.5hrs) Once in a while car would miss a little. also and after playing around a little the surging came back, but only for a few minutes, then it would be good.

Got home, parked car.

Few days later decide before I buy a new VSS, I should swap out the old ecu, and jack the car up and see if maybe the new ECU is the issue (weird that a sensor failed whil the car was sitting getting a turbo installed). Swapped out ECU and still no speedo. Put the HD ECU back in. Also went looking for the miss. Finally found it. It is one of the wires going into the connecter for the brand new fuel injectors. Brand new and already failing (DO NOT BUY DEATSCHWERKS!!!)

Happy that I had found 1 of the problems, I took some pliers and fixed wire. Decided to take a drive. Got in the car, went to the road, and upon pulling out on the main road, I lost all power at ~2k rpm. It was like I turned the key off. After the rpm dropped down, it came back, but as I would give it some gas, it would do it again. I turned around and brought the car back. THIS IS THE FIRST TIME ANYTHING LIKE THIS HAPPENED.

parked the car and shot this video...

https://www.youtube.com/watch?v=BLpcGCP5iuk" target="_blank">https://www.youtube.com/watch?v=BLpcGCP5iuk

keep in mind my foot is never coming off the gas. It seems the the more gas I give it, the further I get before cutoff. Also if there is a load, it doesn't make it this far

Also notice its "coming back on" at 1200 rpm each time...

what is going on here?

 

Um......... Wtf. So your holding your foot down on the throttle and it's revving up and down like that? What map sensor r u running ? Have you confirmed you don't have map and tps plugs crossed ?

 

yea wtf lol

stock map since im not over 10psi

never messed with map or tps plugs

 

What us the map and tps readings when that is happening

 

https://www.youtube.com/watch?v=OdUb9Hcpye8&feature=youtu.be

 

I see map sensor but go to sensors and look at the TPS readings

 

Well I added value, set it tps, and it stayed on 0%.. Unless there's something else I'm supposed to get the value to read then this means a bad tps?

 

I dont see TPS displayed on that video but if your looking at the sensors tab the 5th one down should say TPS and if that stays on zero no matter where you have the throttle then you have a bad tps or wiring issue with the tps and would most certainly cause a weird issue like your having

 

yeah that does seem to be a tps problem

 

Would calibrating my tps mess with my tune?

 

No it won't harm the tune. Try to calibrate it and if still
Not getting proper readings then you need to double check wiring and then if wiring is good you have a bad tps

 

Ok so I decided to replace the tps... Did the calibration so I knew the sender worked. Hooked up a smanager and saw it moving. Finished the install and jumped in the car for a test ride. Soon as I hit the main road, same thing as before. Now smanager was 0..

Remember when I said earlier that I swaped out ecus to test the vss, And it hasn't worked since?? With the car idling, and the throttle open I wiggled the wires going to the adapter for my ecu...

Nothing happened...

I wiggled the wires of the adapter harness in between the 2 clips...

BAM!!! I got readings!

I noticed if I squeezed the oem wire clip to the adapter clip, then readings would stay.

I zipped tied them together, put the kick cover back and took it to 12lbs about 5 times plus I drove to the store to get some air... No more cutting off!!!

Also no more surging idle just yet!

So it looks like my stock tps was causing an idle surge, my adapter harness was keeping the ecu from seeing what little bit of signal my tps was sending, and a new tps, a zip tie, and you f'in awesome azz people and my car has 1 less problem now!!!

Thank you guys so very very much!!!!!

 

congrats! glad you found the issue!