Wednesday, May 12, 2010 - 06:12 pm, by: Scott Voravongsa(Grindin8o8)
Okay so I'm thinking about replacing my ecu on my 93 sc400. My part number is 89661 24230. Is this the only ecu part number that is compatible with the 93 sc400? or is there other part numbers/ecu that are compatible??
My problems/symptoms-
1. On cold start ups, rpm bounces between 1000-2000 or idles high. sometimes the idle drops as the car warms up sometimes it doesn't. When the idle does drop, it drops slowly to zero and then stalls(happened a lot to me). 2. Very strong fuel smell on start ups and when car is running 3. car stalls, only starts up if I keep my foot on the pedal, once released it stalls every time. 4. check engine light stays on when the car is running, and when I try to pull the codes, nothing shows. 5. when driving 40mph+, car jerks when I let off the gas pedal. 6. when coming to a stop car jerks
I replaced my spark plugs, spark plug wire, maf sensor, idle air control valve, and cleaned the throttle body but still didn't fix my problem.
So can anyone help me out?? anyone experience the same symptoms or replace their ecu before??
Wednesday, May 12, 2010 - 07:43 pm, by: Scott Voravongsa(Grindin8o8)
james-it only stalls when the car warms up and the rpm's slowly drop till it stalls. after starting it up after the stall, it'll only start up if i gas it.
Peter Nitschke Junk Filterer South Australia UZZ30 UZZ31
Wednesday, May 12, 2010 - 07:54 pm, by: Peter Nitschke(Pen)
Scott, it might be a combination of problems. The RPM bounce on cold start, could well be a dodgy Idle Air Control Valve. It's not difficult to get at, then replace the bearings.
Is the fuel smell under the bonnet or from the exhaust?
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