With KE-Jet, the electronic-hydraulic actuator (EHA) on the FD doesn't just give the mixture a little bit of trim, like K-Jet with lambda. It provides the enrichment for warm up and acceleration as well. I think 59mA is nearly the max for enrichment. So when you plug it in, it's reducing the control pressure and drivng the mixture to extreme rich.

In the messing around I've done with both flavors of K-Jet since 1999, and reading stuff on web sites, I can't recall a confirmed case of a brain going bad.

One last thing to check. The throttle switch. Make sure it is not plugged in backwards or damage and sending a wide-open signal to the brain.

What mA reading do you get with key on? I believe you should see 25mA. This would be an indicator that the brain is still alive.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe