i have a 95 cx hatch with a d15b7. so i rebuilt it and it has all new parts. i had a issue with absolute pressure sensor but i found out i had to run wires myself. it was driving great but out of no where, i was at the light it started not accelerating after 1500 or sorpms it kinda lugs and hesitates and it backfires . it did it yesterday on my way to the store and i turned around and after about 1/2 mile it just went back to normal. today it started to do it when when i was doing like 45mph and i let off the gas and then it just went away right away. my mechanic freind never heard of anything like that.oh yeah and there is no check engine light.any help would be great

thanks

 

Check whether the engine timing is set to specification.

 

TIMING IS DEAD ON.. AND IT HAS NEW TIMING BELT AND TENTIONER... LIKE I SAISD THE CAR HAS BEEN DRIVING FINE FOR A FEW WEEKS. JUST GOT DONE WITH INTITIAL 500 MILE (NO HIGHWAY)BABY THE CAR BREAK IN AND AM IN THE MIDDLE OF MY LAST BREAKIN 500 WHEN I CAN TAKE THE HIGHWAY BUT STILL NEED TO TAKE IT EASY SO THE NEW RINGS SEAT PROPERLY. ALSO NEW PISTONS, NEW SKUNK2 EXHAUST VALVES AND NEW OEM INTAKE VALVES( SKUNK2 INTAKE VALVES WERE TO LONG). BUT IT JUST DID IT ONCE OUT OF THE BLUE AND I THINK IT WAS ABOUT TO EARLIER TODAY. BUT IT DRIVES PERFECT OTHERWISE.

 

Sounds like an intermittent misfiring issue. It may be worth looking at the plugs, wires, and distributor.

 

it has brand new (about 1 month old): ngk iridiums, oem wires, clear distibutor cap and rotor

 

You seem to have eliminated the obvious.

Partially clogged fuel filter?

Possible problems with the EGR system?

 

feul filter is only 1 month old

 

check if the throttle body is clogged or not

 

NOPE CLEANED IT WHEN I REBUILT IT.

BUT YESTERDAY MY CHECK ENGINE LIGHT CAME ON ON MY WAY HOME FROM WORK... CODE 10, I BELIEVE ABSOLUTE PRESSURE SENSOR. IS THAT THE ONE ON THE INTAKE OR THE ONE ON THE FIREWALL NEXT TO THE FUEL FILTER.WHEN I SWAPED WIRE HARNESSES A WEEK OR SO AGO (B7ECU WAS LOOKING FOR A 4WIRE O2 SENSOR CX HARNESS HAS 1WIRE SO I SWAPED THEM). THE SENSOR ON THE FIREWALL HAD NO WIRE ON THE HARNESS I LOOKED AND LOOKED. IT WAS THROWING A CEL CODE10FINALLY I FIGURED IT OUT THE DX HAS THAT WIRE COMING OFF THE HARNESS THAT GOES INTO THE CAB OF THE CAR SO I CUT THE HARNESS OFF MY OLD CIVIC AND ATTATCHED IT TO THE CORASPONDING WIRES ON THE NEW CIVIC AND ATTACHED THE PLUG TO THE SENSOR. ALL WAS FINE NO CEL. NOW THAT CODE IS BACK BUT THE PART STORE SHOWS THE SENSOR ON THE INTAKE NOT THE ONE ON THE FIREWALL??? BUT BEFORE WHEN IT THREW THAT CODE IT WAS BECAUSE THE ONE ON THE FIREWALL WAS NOT HOOKED UP....WHATS UP WITH THAT HELP PLEASE SENSORS ARENT CHEAP

 

Code 10 indicates a problem with the intake air temperature sensor: