Thread: 90 300sl Hard to start when temperature is 50 or bellow
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Old 11-18-2007, 05:09 PM
aam aam is offline
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Join Date: Sep 2006
Location: California
Posts: 115
Quote:
Originally Posted by Blablabloom View Post
I am rooky here and need some help. My 90 300sl is hard to start when parked overnight and temperature is bellow 50 degrees. It take me a few minutes to finally get it to iddle at very low rpm. If i press more gas it stalls. I have to let it warm up for a few minutes before i can drive it.
I have a non original o2 sensor on the car that I am replacing with an OEM in the next couple of days. will that make any difference? what ese to check?, temperature sensor? cold start injector? or pther?
Pls help...weather is getting colder and it is a real problem...

Thanks
Blablabloom
90 300sl
Check first for vacuum leaks.
2) Clean with carburetor cleaner the electronic idle speed control valve.
To test it pull the connector out, your rpm should jump to about 1500rpm.
If not thats your problem
I don't think is your sensor.
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