Is there a difference between and yellow plug and grey plug 02 sensor? If so what problems could occur if you switch?
O2 sensor
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No, only year used. Yellow plug 86-88 grey plug 89-91. All plugs will be one color or the other depending on yr.
Them, and I'm not sure they are interchangeable (i.e. if they will plug in). Not like you couldn't change the plug though...
They clip in and my car runs but its very lean now and I didn't know it that was the cause of it. I have a yellow one coming to see if anything changes tho.