just swapped in a jdm b16a, brand new plugs, new distributor...fuel filter fairly new...motor slighty bucks at highway speeds, i still have yet to fabricate a bung for the 2nd O2 sensor, so its not connected...is that my culprit? or additionally, could it be my injectors?

 

i have the same problem i swap a B16 engine on my crx it was fine but out of nowhere started whit that problem, i changed the spark plugs whit the cables, the distribuitor, the fuel filter, the oxigen sensor and some other little things and i still got the same problem (no check engine light though) but it runs fine on higher RPM's the problem is from 1000 rpm's to 3000 rpm's and the more i step on the gas the more hesitation i get, i dont know what else to do but its getting worse and worse!!

 

wtf thats weird...I get the same **** but in my sohc zc. It hesitates between idle and 3000rpms. It never did it after a couple months

 

Check your fuel injectors.

 

there are many people on here that has that problem. a lot of different suggestions and stuff but still, it doesn't solve the problem.. i've searched for about a week and all i found was; fuel filter/pump, dizzy, plugs, wires, grounds, bad ecu. the list goes on so yeah.. i really hope there is a solution to this problem cus it's hella annoying when you're stuck on a hill and this kicks in randomly. like today i was delivering food near duncan/diamond heights ( gay steep hills ), a dude was backing up out of his driveway and started a long line on the hill. next thing you know, i stalled and almost got rear ended by an S4. but yeah, take my advice, don't drive up a hill bro!

 

Hahahaha especially when you about to race someone from a 5mph roll. My **** started hesitating real bad but lucky it stopped doin it when I was about to floor it.

 

foreals bruh
maybe TPS but not really really sure. i'm only saying this cus tps sensor clip broke off but still has the three pins sticking out. so still usuable but not sure if thats the problem.. i'll let you guys know

 

i had the same prob on my sohc d15 crx. i ran some cheap fuel injector cleaner through it and it cleared it right up. its worth a try at worse you will lose 3 dollars

 

This is my second used throttle body so it could be that too.
umm I run 92 octane and I always put in fuel additives when I fill up to clean the injectors or what not. I might replace my injectors too then

 

same problem here b16a only at 3000 in first gear.It doesnt do it all the time. I suspect O2 im only running 1. Keep this updated i would like to knw what fixes it for you.

 

but if its the injectors how come it runs good at higher RPM's? something else that i notice is when im neutral and i give it gas it looks good but as soon as i put the 1st gear and trying to take off thats when the problem begins

 

that sucks man. . . i was on the freeway on the third lane doing like 70mph when my car turn off by it self, lucky there wasn't a lot of traffic so i bearly got off the freeway and this is the second time i blow my distribuitor because of this hesitation problem so now i dont really wanna move my rex cuz i dont wanna blow another distribuitor

 

my car will hesitate when i shift gears...i shift to 2nd and hit the gas, car bogs and then it'll catch and go. and the same from 2nd to 3rd. 3rd to 4th and 4th to 5th never happens. i think my problem is tps. this doesnt happen everytime i drive, but if it does happen and my check engine light comes on, it will drive fine the rest of the time. not trying to hijack, but maybe your car is doing the same and its ur tps. the second o2 sensor might be it too. is your car obd-0 or obd-1?

 

this sucks *****.
reptile, who is that on your avatar? method man or ice cube?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jamison1486 &raquo;</TD></TR><TR><TD CLASS="quote">my car will hesitate when i shift gears...i shift to 2nd and hit the gas, car bogs and then it'll catch and go. and the same from 2nd to 3rd. 3rd to 4th and 4th to 5th never happens. i think my problem is tps. this doesnt happen everytime i drive, but if it does happen and my check engine light comes on, it will drive fine the rest of the time. not trying to hijack, but maybe your car is doing the same and its ur tps. the second o2 sensor might be it too. is your car obd-0 or obd-1?</TD></TR></TABLE>

I have OBD-1, i also play whit the tps but i didnt make no difference and i dont have a check engine light since i change the oxigen sensor

 

it could be the tps. if it is kept at a cerain spot for a while a flat spot could be worn into the poteniometer. since it sends a constant voltage signal to the ecu, if there is a flat spot it will buck for a second then it will run right again when it catches a voltage signal again. if you guys having a problem with this have a dmm you should check the signal wire coming from your tps. if it drops to zero all of a sudden, its your tps.

 

thanks oldskoolef

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by es.roadster &raquo;</TD></TR><TR><TD CLASS="quote">this sucks *****.
reptile, who is that on your avatar? method man or ice cube?</TD></TR></TABLE>
method man but i like ice cube too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0ldsk00lef &raquo;</TD></TR><TR><TD CLASS="quote">it could be the tps. if it is kept at a cerain spot for a while a flat spot could be worn into the poteniometer. since it sends a constant voltage signal to the ecu, if there is a flat spot it will buck for a second then it will run right again when it catches a voltage signal again. if you guys having a problem with this have a dmm you should check the signal wire coming from your tps. if it drops to zero all of a sudden, its your tps.</TD></TR></TABLE> quick question, how can i check the voltage from the TPS? should i start the car and give it gas while im checking the voltage? just to make sure

 

no. your should check the tps with the key on engine off because you have to move the throttle open slowly to see if there is a flat spot. if you do it with the engine running you might hit the limiter. if you have a meter put the black lead on a good ground and the red one on i belive is the red wire with a blue stripe.

 

i just change the TPS and it make a lot of difference it feels way better still hesitate a little but not that much

 

I cant even change out my tps

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jonny Rocket &raquo;</TD></TR><TR><TD CLASS="quote">I cant even change out my tps </TD></TR></TABLE>

this is how i did it since it doesnt have a head, grab a flat screwdriver and put in on the edge of the screw and just hit it in order for you to get it loose, it shouldn't be too tight, once you take out the screw go to the store like OSH or Home Depot and get the same screw but whit head, and you will be able to regulate the TPS anytime or even change it, if it doesnt work - i hope that works good luck!!

 

I had hesitation issues with my GSR swap, then when I went to a LS/Vtec the problem persisted.

88 CRX DX with 98GSR then LS/Vtec running a chipped P28ECU

My hesitation was at highway speeds the worst, and very very light crusing throttle at about 30+ MPH, also had some weird hesitation/break-up around 3K sometimes

Here is everything I tried till I resolved the problem.

Sea-Foam(fixed for maybe a few miles...MAYBE)
Fuel filter, fuel lines, Plugs, Wires, Dizzy, (Cap, Rotor)Yes even after the new dizzy!
Fuel Pressure regulator (Slightly better)
New Resistor box
Fuel injector seal kit for each injector (Made it 200 times worse!)

SOLUTION

Changed all my injectors and it runs flawlessly now.

I was fighting changing them due to the cost, but changing eveything else first cost me more in the long run.