ECU FAILED

How to make it go fast

Moderators: Greenleaf, KTA, BC847, Richie O

ECU FAILED

Postby danc » Wed Jul 30, 2014 3:59 pm

MY ecu is not sending votage to the trans and the speedo keeps dropping out. Anyone one know where i can find an ecu for sale or have mine rebuilt. I miss my overdrive. Thanks
1993 club cab 2wd, auto,s300,5x14s,BHAF,powertrax,denny t, Carter 100gph,specrite tc, built 518,tampered pump,and a new headliner.
danc
fuel screw!!!!
 
Posts: 29
Joined: Wed Nov 24, 2010 4:16 pm

Re: ECU FAILED

Postby Philip » Sat Aug 09, 2014 5:40 am

The PCM does not supply voltage for the speedo. It receives the same signal from the VSS that the speedo head does. The PCM then uses that signal for CC and OD usage. Your problem is before the PCM. Check wiring and connections first. Check for voltage at the VSS plug. Check the wiring back up to the speedo head with a meter to determine if you have a problem in the wire. The VSS input to the PCM is threw pin #7.
93 W350 Club/cab w/duals, buckets & console, B&W flatbed, G56, 6 spd, 3:07 rears, gages, HX40/16, 4" exhaust, 6X.018 sticks, rear air ride suspension
User avatar
Philip
14mm rotor
 
Posts: 1954
Joined: Mon Jan 08, 2007 10:50 am
Location: Indiana


Return to The good stuff

Who is online

Users browsing this forum: No registered users and 12 guests