nicknack25

Just swapped a 01 gsr in my crx. Before the gsr i had a ls motor. The ls motor ran fine, no problems what so ever. I converted everything to 0bd1 in the gsr.

Mods: obd1 virgin p72, aem intake, oem header with a obd1 cat. The gsr runs perfectly fine until after i get on the throttle and into vtec. Engine was nice and hot when i got on it, then i felt the hesitation. In all gears, low rpms.

Ex: im in third gear accelerating slowly, i feel power then a sudden drop of power, then a few sec later i feel the power again. And as i am doing this, i kept the throttle in one position i didn't decelerate or accelerate after i felt the sudden drop in power.

Swapped over the throttle body (jdm b18b1 with adjustable tps) to the gsr intake manifold. I'm using different injectors but from another 93 ls integra (obd0) with the injector resistor i was using before.

New spark plugs, wires, dizzy cap and rotor. Timing is set to 16 btdc. Tps read .47 at closed and 4.54 at WOT.

Only thing i can think of is dirty injectors but i cleaned them before i installed them.

Any more ideas?

HondaPartsHero

You don't need the injector resistor box with obd1 injectors. What distributor are you using? Have you checked ignition timing?

nicknack25

Sorry I meant to say obd0. I corrected it. But I'm using the oem obd2b (2001) distributor. And yes I checked ignition timing

vtaker

This is a gremlin in all GSRs. It happens to my bone stock 95 every once and a while. I personally think it's in the fuel system (call it a hunch) :D

Try doing the fuel filter.

nicknack25

I wouldn't think it would be my fuel filter though because i was using the same one from my ls motor. But i'll try and test it. I also kinda have a feeling it might be my fuel pump. Just a hunch as well. Still using my oem crx fuel pump. never been changed.

Kamikaze

iTrader: (1)

I'm not sure if you have the same o2 sensor, but when I did a swap, this was what the problem was.

nicknack25

Yeah I'm using the same 4 wire o2 sensor. I'll swap that out and see if that was the problem.

nicknack25

Morning bump.

I found out that the hesitation occurs when the engine is really hot. I was driving on the freeway for almost an hour, then randomly, i just felt the motor hesitating when i was trying to accelerate. (i was in traffic).

speedjunkie_g35

Distributor going bad possibly. I had mine feel like it would miss just a hair to where I noticed a loss in power. Swapped my distributor and never had the problem again!

DC Dan

I had to replace the crank position sensor on our B18C1 when I had a similar problem. Try a dizzy first from a friend that you know has no problems.

Arman.Baker

I swapped b16a in my da integra.having the same problem.its hesitate when its hot.I also having this same noise in the video here.do you have these sounds?

nicknack25

It's pretty hard to tell what sounds you are talking about. Was it that loud clunking when you were looking at the dizzy? Other than that it sounded pretty normal to me..

nicknack25

Alright, just for closure, because there are so many threads on "gsr hesitation" without the solution to most of em, I found my problem (for now). So today i finally got to work on my car, i figure i swap out my o2 sensor and re-check my timing.

Not sure how this happened but my timing was off about a tooth or so. But, i haven't adjusted it yet. I swapped out my o2 sensor for another one and so far, no hesitation. Since the hesitation only occurred when my engine was hot, maybe my o2 sensor wasn't reading the temp right or something idk. I got a pic of how my old o2 looked like, but i forgot to take one of the one i put in.

I was running a ls 4 wire obd1 o2 sensor and i swapped it for a gsr 4 wire obd2b o2 sensor. Not sure if they are different in anyway, but i just thought i should get that out there. And yes my timing is still off at this point, but im trying to figure out if it was just the o2 that caused the hesitation. I'll let you guys know if the hesitation comes back.

Thanks everyone for the help!

Arman.Baker

The sound only appears when its warm.When I start in the morning,there was no sound.gradually engine heat up n sound appears.

nicknack25

Alright well last night the hesitation came back. My engine was warming up but not at normal operating temp. But the hesitation was always there even when my engine got up to normal operating temp.

I noticed that when i gas it partially, it hesitates. But if i gas it more than half open throttle then it goes away. Sounds like a faulty TPS sensor to me.. Can anyone confirm?

But i am going to fix my timing on friday, so i'll update you guys soon.

nicknack25

Hmm can you describe the sound?

nicknack25

Alright, i fixed my timing on thursday and i've been driving since and never felt the hesitation again. Thanks again for all the help. Hope this helps someone in the future.

nicknack25

Back at it again.. Alright so i accidentally put regular gas instead of premium the day it came back, not sure if thats a factor in this hesitation problem. Anyways, I've been driving just regularly and hard for a week and i've never felt the hesitation until yesterday. It only happens when the engine is really hot and only after i punch the gas hard.

I was on the freeway in 4th and i punched it full throttle up till around 4 or 5k on the rpms and after that it would just hesitate under around 3k. Even when i got off the freeway it would hesitate. Pretty bad too. There was very little power when i would try and accelerate

Someone help!

nicknack25

Any ideas anyone?

i'm gonna change my fuel filter soon and see if that was the problem.

Edmota

Did you ever try the dizzy?

el crapitan

measure one of the injectors resistance. if you get roughly 3 ohms, then you're good. keep the resistor box. if you get roughly 12 ohms, tha's likely your problem. ditch the resistor box and rewire for high impedance injectors

93 should be high impedance. no box used.

other than that, check for codes. always check for codes first. there's no point in wasting a minute going in one direction, when a stored code will send you in the right direction

nicknack25

I've tested the coil and it was good. Haven't tested the ICM yet though.

nicknack25

Nice i'll test this tomorrow. Do i just test the resistance on the injector harness or the actual injector?

DazeMS

confused.. you said you have everything wired for obd1.. so are you using jumper harnesses for the Dizzy and ECU or what?

el crapitan

test resistance at the injector