Date registered: Jul 2016
Vehicle: 1989 260E
Location: Granby, CT
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
3.2L into 260E wiring questions
A little background...
I have been on a race team with 5 other guys and we drive a 1989 260E. Recently, we decided on removing the 2.6L engine and installing a 3.2L engine from a late 1993 300CE for a bit more grunt down the straight-aways.
Here's my problem...the wiring has been a nightmare. I removed the ECM(two plug setup), E-Gas module and associated wiring harnesses from the 300CE and installed them into the 260. The E-Gas module is hooked up but there are a number of small plugs on the drivers side that I am unable to find a home for. The fuel system primes for 2 seconds when you flick the key and I get fuel pressure so i'm assuming the E-Gas computer is satisfied.
My problem is that I can't get spark or the injectors to fire. Everything seems to be satisfied from a voltage standpoint, but maybe not?? I have the wiring diagrams from this website which have been a tremendous help but i'm getting desperate as we have a race in only 2 weeks.
Questions I have...
1. What pin on the ECM (low number plug side) needs 12V?
2. What can be bypassed/grounded/tied to 12V to satisfy the ecm and allow the car to start?
I have unplugged the anti-theft computer, grounded pin 9 on the ECM an reconfigured plug "X26" on the 260 to accommodate the 300 setup.
The transmission is an automatic that's going to be shifted manually so most electronic transmission controls have been removed.
Any help would be great!