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HondaPlatinum, A Technician
Category: Honda
Satisfied Customers: 11333
Experience:  13 year honda platinum level
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92 accord 15mph 1868rpm co 14.4 02 .3 bc 95ppm co .91no 2012

Customer Question

92 accord 15mph 1868rpm co 14.4 02 .3 bc 95ppm co .91no 2012 25mph 1902 rpm co 14.5 02 .2 bc 72 co .88 no 1736 when passage clear and working valves adjusted tune specs good 02 sensor working when warming from cold start rpm fluctuates from(###) ###-####slowly drops to normal when warmed up cat 6 mo. Old new af plugs
Submitted: 3 months ago.
Category: Honda
Expert:  acura mstr replied 3 months ago.

If you open the EGR Valve with a vacuum pump does the engine stall? Do you know if the head has been surfaced? As far as the IDLE hunting when cold check the cold start valve, There is a seat under the end plate (2screws) that can back out and cause this . Remove the cover and use a small set of snap ring pliers to twist it .