Please help with high and low rpm miss (Columbus Ohio)
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Please help with high and low rpm miss (Columbus Ohio)
The car is a 1991 Civic with a DOHC ZC with a Greddy Kit running about 7psi.
It started out missing at low rpm on pull aways from a dead stop. This went on for a while, but it felt like the usual ZC low RPM miss. It kept getting worse and worse until it got to the point where if you were pulling away, the car would fall on its face and almost stall, then suddenly take off. Now when I get in to the throttle hard, the car misses and surges really really bad at about 4500 rpm up to about 6000 and then starts pulling fine again. I haven't changed anything recently. It does it no matter if it is floored (closed loop) or partial throttle. There are no codes on the ECU. Plugs look pretty good.
My initial thoughts are on one of the following things....
O2 sensor.
TPS sensor.
Distributor... probably cam angle sensor.
Anyone have any ideas?? I'm really in a bind because the Summitt import drags are Saturday and I want to go win some money. I think I might be able to line up an O2 and a throttle body off of an Si. If anyone in Columbus Ohio can hook me up with a distributor for a good price or lend it to me for trouble shooting, I sure would appreciate it. Fuel seems to be getting there fine. This seems to be a spark related issue.
Can anyone thing of anything I'm missing?
Thanks all.
*** Note: I searched and read a bunch of topics, but I'm hoping for some individual assistance.
It started out missing at low rpm on pull aways from a dead stop. This went on for a while, but it felt like the usual ZC low RPM miss. It kept getting worse and worse until it got to the point where if you were pulling away, the car would fall on its face and almost stall, then suddenly take off. Now when I get in to the throttle hard, the car misses and surges really really bad at about 4500 rpm up to about 6000 and then starts pulling fine again. I haven't changed anything recently. It does it no matter if it is floored (closed loop) or partial throttle. There are no codes on the ECU. Plugs look pretty good.
My initial thoughts are on one of the following things....
O2 sensor.
TPS sensor.
Distributor... probably cam angle sensor.
Anyone have any ideas?? I'm really in a bind because the Summitt import drags are Saturday and I want to go win some money. I think I might be able to line up an O2 and a throttle body off of an Si. If anyone in Columbus Ohio can hook me up with a distributor for a good price or lend it to me for trouble shooting, I sure would appreciate it. Fuel seems to be getting there fine. This seems to be a spark related issue.
Can anyone thing of anything I'm missing?
Thanks all.
*** Note: I searched and read a bunch of topics, but I'm hoping for some individual assistance.
Thread Starter
Member
Joined: Dec 2001
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Re: Please help with high and low rpm miss (therealciviczc)
It is now throwing a code 1... probably only due to the miss dumping but loads of fuel through the exhaust.
I replaced the ignitor and coil. That didn't help.
I replaced the ignitor and coil. That didn't help.
Thread Starter
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Joined: Dec 2001
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Re: Please help with high and low rpm miss (therealciviczc)
Ok... I see no one is interested, but I have more details and hopefully the day crowd will respond.
The car misses like its on the rev limiter any time it is under a heavy load of any kind at any rpm. It totally falls on its face. It literally sounds just like the rev limiter. The timing hasn't been changed and it ran fine for the last year until a few days ago.
Any suggestions?!?!
Thanks
The car misses like its on the rev limiter any time it is under a heavy load of any kind at any rpm. It totally falls on its face. It literally sounds just like the rev limiter. The timing hasn't been changed and it ran fine for the last year until a few days ago.
Any suggestions?!?!
Thanks
Honda-Tech Member
Joined: Jul 2001
Posts: 1,944
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From: ny/me, usa
Re: Please help with high and low rpm miss (therealciviczc)
FUEL FILTER
classic example of fuel filter error
Thing is clogged up like a ****
02 sensor will not make car lag BTW i dont even have an 02 sensor working on my obd1 b18b
classic example of fuel filter error
Thing is clogged up like a ****
02 sensor will not make car lag BTW i dont even have an 02 sensor working on my obd1 b18b
Honda-Tech Member
Joined: Apr 2001
Posts: 1,081
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From: Sp00ling, USA
Re: Please help with high and low rpm miss (therealciviczc)
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