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Has anybody had the following problems? I have a 96 Honda Civic EX eng/ LX body; it keeps giving me a P0171 (Lean Burn) cel. I have changed the O2 sensor, MAP sensor, IACV, replaced the intake manifold gasket, checked fuel filter & checked for other vacuum leaks.
Can't figure it out, I am stuck. Does any body have any suggestions or ideas?
I am changing out the fuel regulator today (I hope). Thanks for the help.

 
Rep Power: 811

check for proper fuel pressure. if good, check injectors for clogging.

 
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Well i have changed my injectors & the fuel reg and it is still throwing the p0171 lean burn code. Does anyone have any other ideas?

 
Rep Power: 331

any exhaust leaks?

 
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To be honest, the exhaust sound like junk. The muffler is rattling. I checked the exhaust manifold in the beginning of all this (6 months ago). On top of all that my belts are squecking. I will check the exhaust for leaks first. Any other ideas?

 
Rep Power: 331

If the exhaust is leaking near an o2 sensor, you'll throw a lean code because the sensors are getting false readings.