1999 Civic Si Throw CEL

[Turbodude06]

do what i always did on my mustang. put a piece of electiral tape over my check engine light and go when its near dark outside

^That wouldn't work if it was OBD1 or 2.... OBD2 it would still read it, and OBD1 they have to see it come on and then click off.... And u would probably still fail the sniffer.....

smalls what. he will fail right off the bat if he takes the test with a obd1 ecu.



ok whats your current fuel pressure

^ yep the obd1 ecu will not read for the emissions..............................

I have a 1999 Civic Si Throwing a CEL.

Car was boosted before, and Now back to stock.

But its a LS/VTEC now.

B18A1 Bottom end with Crower Rods, and CP 9:1 Compression.
B16a2 Original head, With dual valve springs and retainers.
Header, Hi-flow cat, and Magnaflow B pipe with Twinloop Axleback
Walboro 255lph still in the car. Stock P2T 99-00 Si ECU.
Stock intake box with MAF Sensor stuck in.


Its throwing a CODE P0170

Fuel System too Lean Bank 1.

I have a Brand new Distributor (so new cap new rotor buttom)
New Spark plugs and Wires.

I just did a Valve Adjustment today, Water pump and Timing belt.

How could I check to see if theres a Vaccume leak?

How could i check if the MAF Sensor that goes to the Intake is Faulty?

And is there a Way to Check if the O2 sensor is still good?

Please let me know. Im tired of driving on Tag Applied for Tag.

Theres one of ur problems.... Get an 02 non fowler or a normal cat...... I would go with the non-fowler, I used them twice on civics, one with a test pipe, and the other with a high flow cat..... Both passed emissions......