when the engine is cold it moves through the rpm range smooth didn't murder it but once it's warmed up it does not rev smoothly past 3k from 1-3k smooth but after that doesn't want to go I've replaced o2 sensor, coolant temp sensor and it remains the same need some help please

 

1-Punctuation. Capitalization. Use it
2-Is it throwing a CEL?

 

TPS, Limp mode.. more possibilities

But do what grumblemarc said, get those codes.

 

No CEL, I removed the throttle body and cleaned up everything but I was called out for work so tomorrow I'll update

 

Did it run fine before then suddenly run like crap? Was the condition sudden or did it happen gradually?

You may have crud in the fuel tank. It just might be that after running for awhile enough of the sludge gets sucked into the sock that it is starving for fuel. Shut the engine off and the crud settles back to the bottom of the tank.

Another possibility is ignition components that break down with the heat of the engine. When cold, they work well enough. Once warmed up, spark scatter from Hades. Check cap, rotor, wires, and even the pick-up in the distributor (they often act up only when warm).

Mike

 

Installed the throttle body same sad story, going to try a different distributor tomorrow

 

TPS

 

bad fuel tank

 

Download, or better yet buy the workshop manual for your engine. Look through it and read all you can about the engine, check out the troubleshooting trees, and try to isolate it that way, but the easy way is to google the issue, keep scouring honda tech for a similar issue. Personally I would start with the manual, start with air induction/fuel system/sensors, etc. Troubleshooting tree gives you step by step instruction on what to do till you find the magic fix.

 

Swap ur tps and map sensor plugs around and it should fix the problem. I have cars come in to my shop a lot where some other shop "fixed" the car but had these 2 plugs mixed up

 

I replaced the distributor and the hesitation throughout the rpm range is history, but after replacing the dizzy the CEL came on haven't checked the code as yet but I'll update when I do. THANKS

 

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Check the ign. coil. Look for blued metal indicating overheating. A damaged coil yields high resistance, so under demand it will perform especially crappy