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mlobo · 10-08-2004, 01:53 PM

My 91 Civic Si has about 127k miles, and for quite some time it has had an odd hesitation under certain circumstances. It happens on hot days (85 or higher) when I first start it up. It starts and runs fine, as it always has, but for the first few miles, under mild acceleration and steady cruising, it will intermittently hestiate. It happens at even intervals of about 5-7 seconds, and it acts like the throttle is briefly closed - just a quick drop in power - for a brief moment, then back to normal. This will continue for the first five minutes or so, then it runs perfect after that. It does this to a much lesser degree after subsequent startups with the engine still warm, but mostly after the first start of the day when it's hot outside.

I recently replaced the fuel filter (not due to this problem, just because it was time) but the car has been doing this for several summers prior to that. It acts like it might be a fuel supply problem, but I'm guessing it could also be igntion related. It's never enough to cause drivability problems, it's just annoying.

Any idea of a fix?

10-08-2004, 01:53 PM	#1 (permalink)
mlobo Upright	Odd hesitation in Honda Civic My 91 Civic Si has about 127k miles, and for quite some time it has had an odd hesitation under certain circumstances. It happens on hot days (85 or higher) when I first start it up. It starts and runs fine, as it always has, but for the first few miles, under mild acceleration and steady cruising, it will intermittently hestiate. It happens at even intervals of about 5-7 seconds, and it acts like the throttle is briefly closed - just a quick drop in power - for a brief moment, then back to normal. This will continue for the first five minutes or so, then it runs perfect after that. It does this to a much lesser degree after subsequent startups with the engine still warm, but mostly after the first start of the day when it's hot outside. I recently replaced the fuel filter (not due to this problem, just because it was time) but the car has been doing this for several summers prior to that. It acts like it might be a fuel supply problem, but I'm guessing it could also be igntion related. It's never enough to cause drivability problems, it's just annoying. Any idea of a fix?