i recently swapped a jdm h22 red top into my 97 lude. i am having drivablilitly problems now. I am running a conversion harness with the obd1 p13 ecu, no check engine lights. Idles good, but intermittently as i am driving the motor seems to have a sudden loss of power. Kinda like a fuel cut or something, motor is still running but when it does this the motor doesnt seem to accelerate at all, rpms fall, then suddenly power just pops back in. sometimes it will sputter first then does as stated above. When you press then gas while itis doing this you can hear the intake pulling in air but RPMS still fall at wide open throttle, but this is a consistent problem the whole time i am driving.

I checked:
Fuel injector wiring,
TDC, CPK, CYP wiring
fuel pressure
ohmed out the resistor box and injectors injectors are at 3 ohms and resistor box is within honda specs
changed the cap, coil, plugs and wires
checked the voltage to the tps and check the tps signal to the ecu (.5 volts closed/ 4.5 volts wide open)
Changed the map sensor
Checked all vaccum routing

anyone else had this same problem with a JDM h22a red top swap? Google and Honda-tech search turned up nothing.

 

Its kinda like a mixture of everyone elses jdm h22a swap problems?

 

knock sensor? If you can borrow an ecu to datalog, that will quickly show if any sensors are sending wonky values.

 

i acutally have a tuning ecu, but i was trying to get the car running good before i put the p28 in. but thats a good idea, i pop the wideband in tommorrow and check the AFR while its does that. i was thinking that there might be someone on here with the same problem that might have some advice. but jdm h22a's from what been researching always have problems that are kinda like mine.

 

im having a similar problem with my JDM H22 swap.i have a p72 with hondata and when i launch or get on it hard it will flash a cel for 1 sec then go off and it wont leave a solid cel.Today while driving to work it did it but this one was more of a starving gas/sputter type of problem

 

i plugged my chipped p28 in today, diabled the knock sensor, and tried to connect to the ecu to datalogg but crome wouldnt connect.

I change the tps with a known good one, changed the distruibutor and coil to a known good one. change the main fel pump relay but i am still having that temperary loss of power problem. I also checked the sparl plugs and they looked a little black, like its running really rich. so i have this feeling that its spark related.

this is exactly what it is doing, ill be diving no matter what sped or rpm, then all of a sudden motor just losses power but doesnt shut off, just wont honda a rev, rpms will fall about 1000 rpms, then all of a sudden power just jumps right back in. some days it does that really bad some times it doesnt.

i am also connectted the ICM signal wire from the ecu harness directly to the conversion harness, so ill check and see if that might be the problem tommorrow when i drive to work.

kinda weird because i dont have and poblems at idle, the other day when it bogg real bad on me and slowed me down to a stop the car would still idle.

anyone think that it might be a fuel filter problem orthe fuel pump is taking a **** on me?

 

Dammit! I got the same damn problem!!! At least I know I aint crazy lol

 

everyone check there ground wire for there battery,i remember reading a post along time ago and somone had a loose ground.

 

And this fixed the issue?? I figure that if it was a loose ground wire for the battery then the whole damn car would cut out at random times and come back on.... This is some weird *** fuel cut that I run into where the motor just gets stuck at a certain RPM with no power, then all of a sudden goes...

 

could it possibly be the fuel pump? i did a google search and read through some results about fuel pump stopping, the after letting the car sit a little while it working again. i checked my main battery groun already, ground is good.

 

I'm on Honda swap right now and I'm hearing that its a fuel pump issue most of the time..... What kind should we get bro? Its weird though, because it works really well in random times, but about 75% of the time it does that stupid cutting thing....

 

i have a walbro 255 laying around that came out of my turbo accord that ill put into the lude. ill post up a result in a few days.

if you are going to buy a fuel pump i would get a upgraded one cause you might need it.

 

lol funny thing is, my friend just recommended that exact pump that you mentioned... throw er' in an let me know man...

 

Has anyone had any luck tracking down this issue? Ive check all the things as well, switched every part and have figured out its a electrical problem somewhere, computer appears to be fine though, any ideas to what the answer is? I cant seem to find out much other forum topics that are this close to my own problem.

 

my lude just started doing this. once i let it sit over night or for a couple hour i'll go to start it up and the car will just kinda rumble around and have no power for a few minutes. then it will just kinda wake up and work great

 

with my problem, ive also switched computers completely, to check and makesure it wasnt a bad ECU, problem still persists, so what is a sensor on the engine that could send this signal that could cause a fuel cut? fuel filter is new, injectors are cleaned, pump is fine because it handled the h23 with no issues. Also this engine will work fine when the EGR is unplugged ( tho its not the egr thats causing this because it checks out fine on the tester) has ProjectXaccord had any luck figuring it out?

 

I have the same problem, lol
I have a 95 prelude si w/jdm h22a, It does this mostly in hot wether when the engine is really hot and it seems to loose power from 3000 rpm to 4000rpm. Before and after those rpms, it drives fine.

 

well to those who swaped oil pumps to use the crank sensor plug in and obviously if you did that you didnt wire the jdm harness to work you just used ur old one i would say check that crank sensor. my budy had a probe that did this to the exact same sounding issue and we checked everything and changed everything spark related and a tip ended up getting us to look for the crank sensor and we ended finding that the wiring somehow got cut up were it was hanging on by strands of wire. we changed it and his probe has not had a problem sense. oh and it had also never ran a code or anything just as all of yours has not. hope this fixes your problem. as for the people that still have internal coil i dont know wat to suggest sry

 

Same here... but I threw some Gumout fuel cleaner in that bitch and its starting to clean up its act lol