I have a 1995 integra that was originally non-vtec, I had it swapped less than a month ago with a 98-spec jdm B18c itr motor and Lsd trans. Jays racing intake, smsp header, magnaflow 2.5 in and out cat, and a GReddy Evo2 exhaust. It also has a p28 ecu tuned with crome.

I noticed while driving, it sometimes wants to jerk? as if you were quickly tapping the gas pedal.

I checked the cap and rotor button, and it was also converted to external coil so I checked the voltage and everything was in almost perfect condition. I changed the spark plugs with NGK oem V-Power plugs. (.44gap)

I thought it might be out of time, so I had it checked and it was also perfect.

I have a (CEL) code 41, O2 sensor causing it to run a little rich.

I have no idea what it could be. Someone said it could be the clutch slipping? Also heard it could be the O2 sensor?

I would appreciate any and all advice, so thanks in advance.

 

only thing i can say is get your clutch and tranny checked out

 

do you notice your rpm fluctuating?

 

When you added that external coil did you remove the stock coil from the dist. or are you running both at the same time? If so, you may have done some frying and the jerk you are feeling is a short in the system where you power supply is interrupted.

 

not to scare you but, i had a similar problem on my teg...s1 trannny. It ended up being that the pin that hold the differential together was sheered a little bit or something and so i had the same symptoms as you. I kept driving it and the differential blew apart one day and completely screwed up my tranny. So you might want to get that checked somehow. cheers

 

yeah

 

Im not sure I didn't check, I hope the shop that did it removed it.

 

That sucks! I hope thats not what is wrong. If it is how do you fix it?

 

I'm not suggesting that this is your problem, but I can't relate your symptoms to anything else I have ever experienced other than common tuneup issues.

To rule out the clutch assembly...

Get in fifth gear at the lowest possible RPM the car will run at. Probably somewhere around 40ish. Then as your moving along, floor it. If the RPM's go up and your speed does not, your clutch is slipping. You'll feel it.

 

Ok I tried it and no slipping. It just gained speed.