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Troubleshooting: 2000 Accord turbo w/ unstable idle under 3000K

Troubleshooting: 2000 Accord turbo w/ unstable idle under 3000K

 
Old 07-12-2018, 06:45 PM
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Default Troubleshooting: 2000 Accord turbo w/ unstable idle under 3000K

Hello all. I have a 2000 Accord manual with a built motor and a turbo setup. The built motor only has about 3,000 miles on it. I've been experiencing a problem with stutter and bouncing RPMs lately.

There are no issues at idle, but while steadily driving anywhere from 25-45 mph, and mostly in any gear, at around 2800-3000 RPMs, the needle will steadily bounce up and down throughout a 200-300RPM range and the car stutters while doing so. Anything over 3000, there is ZERO issue.

Just to rule them out, the IACV is a converted 2-wire (for OBDI compatibility), the fuel pump is new (a Walbro 255), new ID 1000cc injectors, wires, plugs and a boat load of other performance parts.

I've read a few posts online that point to a distributor issue. Can anyone shed some light on this as to a starting point to diagnose or is this a common problem any of you have experienced?

Last edited by TheShodan; 07-13-2018 at 04:39 AM.
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Old 07-13-2018, 08:45 PM
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Default re: Troubleshooting: 2000 Accord turbo w/ unstable idle under 3000K

Have you had the car tuned? What AFR's are you seeing in that RPM range? Any data logs?

There's a few different things that could cause stutters or jumping in the mid range. Either fuel or ignition related, no way of telling at this point.
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