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1987 Mazda RX7 Idle tuning

Tiny
RWOLFERA
  • MEMBER
  • 1987 MAZDA RX7
Engine Performance problem
1987 Mazda RX7 Two Wheel Drive Manual 20000 miles

I own an '87 Mazda RX-7, with 124,200 miles on the body and 20,000 on the engine, since the overhaul I performed. I recently had the A/C replaced with a stock Mazda unit and it was recharged and such. It works great and I can't complain about the A/C's performance, but it has now lowered my idle by roughly 250rpm and it noticeably affects performance depending on whether it's on or not. Is there a way to tune the idle to be higher? I want to raise my default idle from its current 1000rpm to 1125rpm or 1250rpm so that I don't stall the car out when the A/C is running.
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Saturday, August 9th, 2008 AT 1:45 PM

2 Replies

Tiny
A240SX
  • MEMBER
  • 27 POSTS
The idle for your car should be around 750 RPM. Why would you want it so high?
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Monday, August 11th, 2008 AT 9:02 AM
Tiny
RWOLFERA
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  • 2 POSTS
It has to do with the new gear ratio I have. I switched to a 4.3 for better acceleration and it has to be slightly higher to jump off idle a little better. I have tuned the idle to a healthy 850 and can run it fine, it's just a bit sluggish considering the new installation.
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Thursday, August 14th, 2008 AT 1:28 PM

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