Hello everybody,
I have one small and one big problem with my Nissan Sunny 1988 1.6.
1.) the small problem: When I start the engine, it runs at 1400 to 1500 rpm idle because of the cold-start injection system. But it takes way too long to get back to normal idle at about 900 rpm. I guess the problem is the thermo-sensor which reads the temperature of the engine block. Is my guess right? What else could it be?2.) the bigger problem: When driving at about 35-40 mph when I want to accelerate and push the throttle too fast the engine "coughs", jerks and slows down. On the other hand when I accelerate and slowly push the throttle pedal it accelerates fluently. What could be the problem? Where should I start?
3.) Not a problem, but... does anyone have a map of the engine? I mean some directions how to find all those sensors... (like for example the cold-start-engine-temperature sensor)I already did all the diagnostics available in this type of E.C.U. (I. to IV.) with these results: Mode I: the green LED would blink very slowly, and I don't know if it made it the 5 flashes / 10 seconds. It could also be 3 or 4 flashes /
10 secs. Mode II: Sometimes it showed that the mixture is too rich (only green LED lit) and sometimes that the mix is fine (both LEDs lit) Mode III: no error code. Only 44 meaning that everything is OK. (But I might have erased some codes, because I disconnected the E.C.U. from power to get it out from under the passenger seat. After driving for about 30 minutes, no new error appeared.) Mode IV: TPS = OK, Starter = OK, Speed sensor = OK Mode V: Everything OK. No LED flashing for about a minute. (didn't watch the entire 5 minutes)Thank you for your responses in advance.
Ondrej