I am new to this forum and new to working on Samurai's for the most part. Since I bought my '90 Samurai about 5 years ago, I haven't really had to work on it except for a water pump replacement. However, it recently blew a head gasket -- so what better time to do the 1.6L conversion? I just finished the conversion last weekend. Having just installed the new engine, I wanted to check the idle speeds. Since the day I bought it with the 1.3L, it seems like the FI system idles way too fast when its cold. It will also "lope" a little when it is really cold outside. Just by listening, it sounds like it is running at 1500+ RPM at cold idle. I just bought a diagnostic tach and plan on checking the actual RPM this weekend. Does anyone know what the idle speeds should be? How are they adjusted? Any ideas what is causing the loping?
My '92 idles the same way when it's cold but once it warms up it runs fine. I think the idle should be around 800 rpms. Petroworks has the supplement FSM for the fuel injected Zuks, it may help you out. If you talk with Gary or Rudy they'll probably answer your questions about the idle and how to adjust it.
Same dog bit me. I just got a '93 EFI and I checked the diagnostic codes on the ECM and it said no problems. One flash, pause, then two quick flashes. Every Sammy I've ever driven idles really high on fast idle.
My 91 does the same thing. The looping really isn't normal as it never did it when new. Only after the first 100,000 miles did it begin to act this way. It has been suggested to replace the water temp. sensor (not the sending unit for the temp gauge) and another sensor that I'm completely at a loss to remember, but I did replace whatever it was and still no change. Still have a code 12. It must be possessed by the warm up demons........
All Good Medicine,
Creator, everything we do leaves a track. May our tracks be ones we would want you to see and others to follow......