Date registered: Sep 2016
Vehicle: 94 mercedes benz E320 sedan, 95 MB E320 wagon
Location: Astoria Oregon, USA
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
M104 injection system troubleshooting, ASR
So Thanks for the forum! Seeing lots of great tips here..
Ive had two E320 Mercedes, one 94 sedan and now a 95 wagon with 200K but sounds very tight..Just got the bugs out of the transmission and cured a bad smoking issue which was the vacuum modulator valve leaking into the intake manifold! It needed a head gasket so I pulled the head and had it overhauled..badly needed but the bottom end was beautiful..still had the crosshatch and using NO oil..And got the AC working perfectly complete with cooling fans cycling on beautifully..
THEN I had an issue with the injection system just dropping out..Starts great, zoom to 1200 rpm then drops to 1100 and when it settles down to the nice 650 rpm..instead of picking up the formerly nice idle it just dies with a hum from the fuel pump showing its still powered..
Ive checked everything and rechecked..changed the MAF and ECT sensor and was about to pull the throttle position sensor and ...also checked the purge valve and the EGR valve by blocking the tube to eliminate vacuum leaks..Removed the ETA and had a look inside--beautiful! and has all the upgraded wiring and the ETA is from 04-09, german OEM..from the previous owner..And I get codes for EVERYTHING..Pin 14 DTC is saying the CC/ICU is bad and codes for a dozen issues..starter lockout and saftey switches..and wondering if I could have degraded wiring to the transmission causing safety shut down..
The car starts an
Love the car and its 100% except for this issue and Id love any tips from all the pros!
I mostly read posts and never comment, hope I did this right.. runs nicely about 0ne minute from cold, then starts and runs only seconds..then repeats after its cold again..
Its been suggested the ETA coil which heats up is opening and killing the throttle by shorting it out at the potentiometer..