i have a jdm h22 and it has what seems like the dredded prelude hesitation. but in the last few days, it has gotten worse. from 2-3.4k rpm it is VERY laggy; far worse than the normal hesitation. it is almost impossible to drive between 2.5 and 3k rpm.

i have changed the wires, the plugs to NGK's, the fuel filter, and the 02 sensor.

the hesitation is always there, but it only gets worse some of the time. the lag seems to happen more in the rain or in very hot humid weather. is this associated with the prelude hesitation or is this another problem in itself? i assume that having a short ram intake would make it lag due to heat soak but not to this level.

there is a small connector on the shock tower of the driver's side of the car. there are two wires coming out of each side of this connector, red and i believe yellow/black. i know by switching these wires, it makes the car have the hesitation at different rpms. would this by chance have any affect on the lag?

any suggestions, or ideas greatly appreciated!

 

bump

 

It was the ignitor for my h23. Sometimes problems with it will throw a code but mine didn't. You'll have to bust out the Helms and go throught the flow chart to know for sure.

 

that is what happening to my car as well. the same exact thing like in those rpms it has done it so many times that i dont kno what weather it really does it in mostly hot i kno that. and yeah it like completley stops in those rpms and then it goes back up.

 

i thought it might be the knock sensor like the 4bidden's prelude but why would it get worse some of the time then go back to normal?

anybody else have this problem. anybody else fix it yet?

 

I got the problem, are you still using your stock cat? I think mine is clogged and might be causing problems but i havent gotten a chance to look at it.

 

Mine does the same thing since i put my motor together... At half throttle it i fine but if i am at like 3/4 throttle or above then it will hesitate and bog up until about 3400, but only at high throttle... So it doesn't effect me for racing, it just makes my daily driving stay above 3000 most of the time...

 

yeah, i'm still using my stock cat..the hesitation is only really bad when the car is really warm. (running the car in 80 degree weather for 30 or more minutes straight). this leads me to believe that i must have a bad sensor that has to do with temperature...any ideas on what sensor would be bad without giving a code?

 

yup I had that problem too with my jdm motor, i think i fixed it by putting another fatty ground on the tranny and another one from the wireharness ground point to the negative battery. Codes and responsiveness were alot faster.

Ive never run a cat and it still did this. Actually i just remembered what was wrong with mine, the grounds helped alot but it was the injectors, they were ruined from not running a resistor box

 

I could have possibly gotten some bad injectors because I bought them used... My problem definitely seems fuel related though... I also think that my ECU is chipped with some shitty ebay chip, so that could be a possibility too...

 

When my car had this problem, my distributor was going bad. Specificly the Ignition Control Module. I don't have the problem any more since then.. Start off trying to ground your engine and wiring harness better, that makes a big difference in how smooth it runs. I wouldn't mess with the ignition coil because they normally don't go bad( although i did buy a new one from Advanced Autoparts and replaced my old with the new and took the old back..hehe don't tell!) Check your voltage running to the distributor and the amount of resistance in your plug wires because they may be going bad as well. Hope this helps

 

I still have it also. Worse at times, sometimes it runs like a beast. I've pretty much given up on it but make sure you post back if you find out anything.

 

mine has had alittle bit of lag too but not what u are talking about. i just had a little sputter, someone advised me to advance my timing, check that as well just to knock another check off the list.

 

i advanced my timing to what i believe is close to 4 degress(not really sure) and it ran like crazy in the low rpm but i don't think it's safe to do that. sounds to me like there is no real cure...i'll guess i'll just take one step at a time.

 

I have the same issue as you all have described, worse once the car warms up, only at 3/4 or higher throttle, and only in the low RPM's.

I'm going to try what delKudeVTEC said, the fatty ground cable. Why? I just recently added a by-pass oil filter system, and when my father was helping me, he said "Your ground cable looks like hell, and its going to start giving you problems", and I believe he is right. I'll post back on the results.

 

Do you replace the ground cable with an aftermarket one, or do you just put a regular OEM or autoparts replacement? I didnt know they made aftermarket ground cables for the Lude.

 

You don't need a cable made specifically for a ground cable. Any wire will do.. Just get something that is larger.. Like maybe 5g or larger. Try running a new wire to the tranny, thermostat housing and to the right side of the valve cover. There should be wires there already but maybe they have a short in them...

Also as already said in here it could be your knock sensor... If that goes bad it can start to pull timing causing hesitation as you describe.

It also could be your igniter as also said. A good sign of that is often times your tach will start to screw up. Like it might jump around.

But if it seems to only be happening in rain or moist conditions it could be a hole in the lining of any wire that the moisture is causing it to ground out. Usually that wouldn't be at certain RPM's though...

 

My ground cables are so corroded it's not even funny. For me, it happens in perfectly dry conditions as well, like today, for the first time in weeks in Minnesota, it's not raining. It also is tempermental right when VTEC kicks in some times, which is why I believe this could be the issue. As I stated before, I'll report back soon when I get them replaced on the results.

 

i knocked back my timing about 1 degree or so and i had a ton more low end and high end power..there was no lag at all..it wasn't extremely hot out so i'm not sure if it was the timing or the temperature that made the difference..

as for my grounds: they do suck...some of the are really old. if i had time and patience to replace all those grounds i would but there are a **** load of them and they run everywhere it seems.

 

i have same problem had it since i dropped my motor, my ground does suck i have no cat could be any # of things i will try the ground as well though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94vtecmn &raquo;</TD></TR><TR><TD CLASS="quote">I have the same issue as you all have described, worse once the car warms up, only at 3/4 or higher throttle, and only in the low RPM's.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yOnKiNaToR &raquo;</TD></TR><TR><TD CLASS="quote">from 2-3.4k rpm it is VERY laggy; far worse than the normal hesitation. it is almost impossible to drive between 2.5 and 3k rpm.

i have changed the wires, the plugs to NGK's, the fuel filter, and the 02 sensor.

the hesitation is always there, but it only gets worse some of the time. the lag seems to happen more in the rain or in very hot humid weather. i assume that having a short ram intake would make it lag due to heat soak but not to this level.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yOnKiNaToR &raquo;</TD></TR><TR><TD CLASS="quote">the hesitation is only really bad when the car is really warm. (running the car in 80 degree weather for 30 or more minutes straight). this leads me to believe that i must have a bad sensor that has to do with temperature...any ideas on what sensor would be bad without giving a code?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yOnKiNaToR &raquo;</TD></TR><TR><TD CLASS="quote">i knocked back my timing about 1 degree or so and i had a ton more low end and high end power..there was no lag at all..it wasn't extremely hot out so i'm not sure if it was the timing or the temperature that made the difference.</TD></TR></TABLE>
So is your problem solved since you messed with the timing? Update...


Bump the hell out of this thread....

 

i'm not sure if th problem is still there..i'm in the north east and we haven't had really hot weather in a week or two...i'll find a hot day and run the **** out of the car to see how it behaves...

right now, with the timing set back, it doesn't bog much, but i think it's disguised by poor performance of it running with a richer setting.

when i start the car it almost sounds like it's missing...it don't think it is, but it has a very faint sound of it...i replaced ignition wires and spark plugs so it's not that. i noticed my coil wire touches #1 cylinder wire..would those to spark wires have any interference with each other?

when i get some time i'll at least take all the grounds off and shake them and make sure their connections are good. any results, i'll let ya guys know.

 

Bringing the thread up from the dead:

I have the hesitation problem as well. 2-3k it feels like someone is pulling the car back and once i hit about 3k that "person" lets go.

I have narrowed down the problem to these conditions:

SO far the problem happens usually the day after it rains, or when it starts raining.

My a/f gauge while hesitating would go to rull rich, then lean out back to normal past 3k

to back up the a/f gauge, I went 1 full tank with the hesitation and noted the worst gas mileage i ever had in my h22 civic.

 

I have similar problems with my 94 lude (h22a1) ON OCCASION. Around 2-3k rpm it will bog for a second then jump back to life. Its kinda jars you back when it stops bogging. I get 2 lights (tps and fuel supply system). Not sure if they are related. At higher RPM i dont have any problem with the ghosts. I plan on changing o2 sensor and troubleshooting the code 43 (fuel supply sytem). I will post results when i finish.
I think my lude may just be bi polar.

 

krnbk2...that's EXACTLY my problem on a daily basis. i have that lag all the time no matter what the temperature. i get an occasional "worse" lagging experience that lasts until 3500 rpm on very seldom occasions.

by looking at a lot of prelude dyno sheets, i think it's just how the prelude fuel maps are set up. that is, to run rich from 2-3k. i think the only way to fix it properly would be uberdata/hondata or maybe VAFC would somewhat fix it. either way, it sucks b/c i do most of my driving in between 2-3k and i would like to have more usable torque down low.

anybody have the lag go away after engine tuning?