Application – 99’SS M6 Convertible.

Mods - Whisper Lid | K&N | SLP LS6 Intake | SLP LT’s | RT Cats | SLP Factory Dual/Dual |
MTI B1 CAM | Comp 918’s | MTI Push Rods | New Oil Pump | LS1 Edit

Summary – Last week I had B1 Cam package, and new oil pump installed, and dyno tuned with LS1 EDIT. Yesterday I .had the Revlimiter bumped from 6500 to 6600 using LS1 edit, and drove the car for about 1 mile. Took of hard from a roll up to about 5500rpm’s and shifted hard. Stop at next light, take off slow and notice the Tach isn’t working, and the car is coughing and sputtering. Drove about 1 mile back to Installer. Turn off car and it won’t start up. Installer runs scanner – No codes only a lot of misfires. Disconnects battery for 5 minutes. Car Starts but runs like Hell.

What could be wrong???

Long version – B1 Cam | 918 Springs | MTI PushRods | New Oil Pump (Insurance) installed last week.

Last week - B1 Cam | 918 Springs | MTI PushRods | New Oil Pump (Insurance) installed

5/09 Thursday - Dyno Tuned using LS1 Edit
Driven 8 miles – Everything seems fine

5/10 Friday – Driven 50 miles - Everything seems fine

5/15 Wednesday – Driven 5 miles
- Went to installer to have a small coolant leak looked at.
- Intaller put new clamps an hoses going to H20 pump

Problem begins here – Ask installer to bump rev limited from 6500 to 6600?

- Installer bump rev limited to 6600.
- Start car up to head back to work. Everything OK
- Drive car for 1 mile turn around and pull it to about 5500rpm, and shift hard. Everything seems OK
- Stop @ light, take off sloe and notice the TACH isn’t working and car is now coughing and sputtering.
- Go back to installer
- Turn off car, Car won’t restart
- Runs the scanner No codes show, only a lot of misfires.
- Disconnect battery for 5 minutes, Starts up but runs like hell –a lot of misses.
- Installer suggests it could be crank or camshaft position sensor, or maybe a broken spring.
- Leave car to go to work.
- Installer removes valve cover to check Valve train – Everything seems normal

5/16 Thursday – Waiting to hear from Installer.

I’ll inform him of these possibilities. I read in another post -

- CKS needs Tech II to relearn. (What is Tech II?) – Team ZR1
- Rewire Crank Sensor, and replace Crank sensor – Pro Stock John
- Several Important wires that run near the #4 and #6 header primaries, - PSJ
- like one of the front 02 wires
- starter wires
- CKP wire.
- CKP Relearn - Vince
- Blown Fuse – Black Magic
- PCM/BAT
- 50 Amp Ignition Fuse
- Short Somewhere?

Thanks,
Bryan

 

Which way did you route the wires when the SLP LT's were installed? Do they run underneath the headers completely? Do they lay on them? The reason I ask is that if the wires are resting against the headers in any way you can either burn the wires or there is also just enough pulling on the crank position sensor connection to not let the connector and sensor contact correctly. Although if you were not getting a connection you would see a crank position sensor code.

I state this problem since I have heard of alot of people burning up and breaking starter/Crank position wires with these headers because of the way they are routed.

 

check ALL the connections it sounds like some wires or connectors came loose.