Hey guys. I'm needing some help with a couple of my problems. I have 91 CRX HF with a B16. Now here's my problem.

While I'm crusing my engine kinda surges. Not really bad, but enough for me to feel it. I also notice on my A/F gauge that it goes really lean, then it will go rich, and I can feel the car jerk slightly. It won't do it when I'm at FOT, and I don't have any CEL codes.
What could this be????

 

I think it could be your TPS.....

 

i say it is deff a senser try the tps

 

 

you are having o2 sensor issues. You have one of two problems.

1) your second o2 sensor wire is not making contact at the ecu. jam it in there.

2) your o2 sensors are reversed. switch them (no don't take them out and switch them...just swap the two wires...it is easiest at the ecu.


try these things....if its not these then i don't know.

 

Thanks for the help guys. I'll have to check these things out.

 

QUOTE]I think it could be your TPS.....[/QUOTE]

wat's the tps sensor? where is it located?[

 

On the back of your throttle body, connected to the throttle cable. It's the 3-wire sensor that tells the ECU how much gas you're giving it (Throttle Position Sensor)

 

you'd be throwing a code 7 if your TPS was fucked.....

 

It's not your TPS.

You're O2's are BACKWARDS. Just take wires that come from the sensors off the manifold and cut and splice them as to switch the signals.. If you don't understand IM me. You should understand if you got this far by yourself

 

if its obd0, which it prolly is, its NOT the 02s

 

what exactly rules the 02 sensors out ?

if he has the two sensor wires connected to one sensor, or the sensors reversed that could cause the engine to run incredibly rich or incredibly lean causing a bogging\hesitation.

i say check the o2 sensors

 

Ok I will check the O2 sensors and make sure they are connect good on the ecu, and also reverse them to see how it acts.
Thanks for the help guys.

 

it is the o2 sensors.. guaranteed.

switch them on the ecu Pins c8 and c16
no cutting and splicing needed.


good luck.

 

you sir are a dumbass..

 

Hey guys, how do I move the pins on the ECU? Don't you need a special tool for that?
Thanks.

 

i just cut the wires about 2 inches from the plug that goes into the ecu and then spliced em. just make sure you cover them up good with electrical tape.

 

WTF????? What is then? If your so sure! I'm going with the rest of the general public O2 sensors are either reversed or you have them both spliced into only 1 terminal. People need to realize that most of their 1st gen b16 hesitation problems are solved by correcting installation (human) error.

 

Ok guys, how do I determine which is the primary sensor and the secondary one??
I see them both on the exhaust manifold, but which is which??

 

to remove the pins.. take the C connector off the ecu.. insert a needle in the hole between the wires.. on the opposite side of the wires

Hold the connector so you look straight at it with the wires on the other side.. and you will see 2 rows of holes where the pins are and the a row of smaller holes between them

insert a pin in the small hole, pointing it slightly towards the pin you wish to remove.. do this while pulling the wire you want to remove. should come out really easy, if not keep pokin around.. you will get it

 

You guys were right!!!
The O2 sensors were backwards. I re-wired them and now it runs great. My A/F gauge even works better because it's reading the Primary sensor and not the secondary like I had it before.
Thanks for all the help!!

 

Good stuff

let us know if your gas mileage imporves any

 

Alright.... Somebody call Betty Ford...

The first step is to admit that you HAVE a problem

If it's obd0 LIKE MOST SWAPS OF THIS TYPE....... Then IT'S MOST LIKELY THE O2'S!!

 

if its obd0, which it prolly is, its NOT the 02s
--------------------------------------------------------------------------------

"Alright.... Somebody call Betty Ford...

The first step is to admit that you HAVE a problem

If it's obd0 LIKE MOST SWAPS OF THIS TYPE....... Then IT'S MOST LIKELY THE O2'S!! "

LOL. gotta love it when rookies join the conversation

 

do you have any pics of what to splice? i already used the carb cleaner and it didn't work, i only see one o2 sensor on my car and it's on the bottom half of the dc headers. pics would help alot! i gotta get my fix it ticket fixed and surging bet. 1500rpms and 3500rpms in front of a cop isn't good.