97civicdx

I constantly get the slow response code on my 97 dx. Its the d-16y7 and it has around 200k miles on it. Fuel injectors are original too. Please do not just reply REPLACE O2 SENSOR................. I have already done this numerous times and code still continues. Is there a check list for finding the cause of this code?

Former User

Check for an exhaust leak.

97civicdx

I have already replaced the entire exhaust system. Newer cat and midpipe and rear muffler.

Former User

Aftermarket exhaust system? The part of the stock exhaust system relevant to P0133 is the header/cat unit.

97civicdx

Entire exhaust, cat too. Its a Bosal replacement unit. Before u fault it for the codes, let me just say that the slow response code was also present in the oe honda cat that was original to the car.

I am believing that the actual fault can lie in a faulty fuel injector or injectors.

97civicdx

Just realized that it tends to happen more when im running with the AC system on.........

97civicdx

RonJ@HT: Do you have a trouble shooting page on the po133 code for a 1997 Honda Civic dx. Its the d-16y7 engine and 5 speed manual trans.

Former User

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97civicdx

Okay, Thanks. Ive already done this many times. The problem is more complex than this flow chart I guess.

Would u happen to have the trouble sheet for testing fuel injectors. both Resistance readings test levels and

Former User

The text below from the diagram suggests that you should look for a poor electrical connection in the O2 sensor connector or the ECU connector.