91 integra LS, runs rich but only has 19lbs of fuel pressure at idle. kinda seems to bog out if i stomp it. and im getting like 190 miles to a tank! used to throw a fuel supply code and then just stopped throwing it. new o2 sensor, fuel filter, plugs, wires, dizzy cap, and rotor button. someone help?!

 

take injectors out and clean them?...or go to a junk yard and get a cheap set to try?

 

MAP sensor!

 

hhhmm...i didnt think that would throw a fuel supply code though

 

seafoam it and see what happens after that.

 

check your injector if they are dirty, seafoam the car and change your oil is a must..and use a good brand of gas, i use shell or 76 and i get over 300 miles on my integra 80-90 on freeway...and when i use cheap gas(only did this once when i got my car) i only get 250-265.

 

never tried that seafoam stuff. but i know doing a basic tune up works like a charm some times. and once a month i run a bottle of fuel treatment. its only like 2 something for 3 bottles of it at walmart.

 

well Greg at Go-autoworks.com works at the shop next to my friends shop. he threw me a MAP sensor and right off the bat my idle smoothed out and it feels like i got a little more power. i seafoam it twice a year, change the oil every 1500 miles, only use Liberty 93 octane gas, and use Lucas fuel treatment every three or four fillups. but yea so far the map sensor fixed the problem. i still hope it fixes the gas milage issue! ill keep it updated.

 

#43 can be caused by, incorrect mechanical timing, a bad injector, bad fuel, bad 02 sensor, bad FPR, MAP sensor.

Have you ever had the timing belt changed? If so I would check the mark to make sure the engine is in time. My girls 91 GS Teg was having the same problem and I did all the stuff you did plus changed the injectors. Turned out to be off a tooth in mechanical timing.

I would also check resistance of the O2 sensor wiring from the connector at the sensor to the ECU connector!
Thats the toughest code to diagnose!

 

well now my idle is bein wierd! timing is spot on, ive checked it like 284756394x. but ya about my idle, its all fine till i let off the gas and depress the clutch, the rpms drop to damn near 400 and then go back to 800. why does it drop then return to normal like that?