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Discussion Starter · #1 ·
Hey everybody. I was hoping if anybody can please give me some useful information/suggestion on these problems that I currently have.

1) AC and Idle:
My neutral idle is about 1grand. When I turn on the AC my idle drops to 400-300. When I drive with the AC on from a stop there's a lag in acceleration. Almost making stall out. Also when I drive with the AC on, if I decelerate quickly; braking or downshifting, my car dies out. Right now i have the o2 sensor turned off. Is this causing the problem?

2) Speedo
My eg was a auto before, and I recently switched out my cluster to a EX one. Everything worked fine, but recently the speedometer is crapping out on me. Sometimes it won't read at all, then jump to 100mph (no matter how fast I'm going...or gear...hell I can be at a stop and it will do that). The cluster worked fine before I switched it out.

Helpful info on my car:
92 civic hatchback
2004 k20a2 swap
Running AEM EMS

Sorry if these are noob questions....
 

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I don't know if the EMS has the ability to compensate for extra load such as the a/c on honda OEM ecu's when the a/c is turned on it will open the IAC 2-5% to allow extra air. it might have an input and have an output but that's about it. Also check to see if your system is not overcharged or has air(did you vacuum system). is your condenser fan turning on when the comp is on? what is the oil level of your a/c too much and too little can cause problems. also is this a/c system retrofitted to R134 and if it was, was it done properly. or is it still r12. I know people will probably say all I do is change the fittings and charge it w/134 and call it a day.
 
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