Quote:
Originally Posted by Blablabloom
Thanks for the input Chuck and all of you guys too, FYI I have already replaced the O2 sensor a couple of weeks ago and that improved it a bit then. What kind of voltage should I get at the ICV valve? 12v constant or????
I think I am dealing with 2 different issues here. The thermostat is not going to prevent the car from starting, it should still start ok without it. What spark plugs are best for the 90 300sl? good old normal Bosch or can I use the bosch platinum + 2 that are in "fashion" now? I am also going to check/replace if needed the distrib. cap, rotor and plugs. and a new fuel filter. what do you think guys????? what is the best way to check the cold start injector to see if it is working? taking it out of the side of the distributor and see if it squirt while cranking or is there a safer way since we are dealing with fuel and electricity here???
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Your problem is the ICV.
Your Rpm didn't change.
Repair/replace.
1) Clean it, and push or twist.
2) 12 volts with key on # two.
3) If you want to test it, don't power it longer then one second
Don't burn it.
Should hear a clicking noise.
4) Install new thermostat.
5) Plugs, normal Bosch, replace every year.
Plug sticks to the head / damage the threads, expensive repair.
Platinum's they don't like contaminants.
On old engine don't last long.
6) I would not touch the cold start valve yet.
Regards,
aam.