Wont Start. Need help!!

TurboGt · Post by **TurboGt** » Sat Feb 18, 2006 3:22 pm

I am running MS-II on a V3 board, megatune 2.25, and 2.34 code. It is in a 1987 Ponitac Fiero. The car ran great befor I choped the wiring harness, so I know all of the components are good and working. When I start cranking the car starts for a second and then dies, if I hold the throttle down to 100% and then let off the car will start, sputter for a few second then dies.

I noticed that I am not getting any rpm signal while cranking or when the car runs (if you can call it that). I have read and reread the HEI 8 pin setup and double checked my wiring. I have the purple wire with the white trace going to pin# 24 and the white wire going to pin#36. As of right now I do not have the tan wire hooked to anything because when it was conected the car would just crank and not even try to start.

Here is a datalog I took

Bernard Fife · Post by **Bernard Fife** » Sat Feb 18, 2006 6:44 pm

TurboGt,

You aren't getting an rpm signal, so you need to figure out why. Did you get an rpm signal when testing on the stim? Did you set up for a Hall sensor (not the VR) when you built the MegaSquirt, and put in all the correct jumpers?

Also check that the module is getting 12 Volts (on the + terminal)

There's more here: http://www.megasquirt.info/ms2/GM_7pinHEI.htm

Lance.

TurboGt · Post by **TurboGt** » Sat Feb 18, 2006 7:35 pm

Lance thanks for the suggestions but I got it figured out. I was looking over my board and was reading step 50 again and found that I left out the jumper for D1. The car starts now but the idle air control valve is not working. I will start looking into that tomorrow.

Bernard Fife · Post by **Bernard Fife** » Sun Feb 19, 2006 6:45 am

found that I left out the jumper for D1

TurboGt,

Yeah, it's usually something like that! I'm glad you found and fixed it!

Lance.