Fuel injection problem

Nov 08, 2005 1 Replies
1996 Mazda 626 ES 2.5L auto.

I replaced the starter, which entailed disconnecting the throttle body and stuff around it like fuel lines, coolant lines, accelerator cable, etc. When I got everything back together, the starter worked but the vehicle will not idle and runs very rich. I pulled the codes and I got:



P0100 - MAF circuit malfunction P0110 - IAT circuit P0125 - "Excessive time to enter closed loop fuel control". PO135 - O2 sensor heater circuit malfunction P0300 (Or PO303) - Random misfire detected on cylinder 3 - I replaced that spark plug and cleaned up the oil in its cavity so I don't think it's an issue anymore) P1170 - Heater O2 sensor (Front RH (Inversion))


Any idea what any of this means? The car runs horrible, does not idle (goes anywhere from 0 to 2000 rpms) and gets less than 20mpg on highway instead of close to 30mpg.



I pulled the MAF sensor and looked at it, although not sure what I was supposed to look at.



My guess is that somewhere there is a multipin connector which carries signals both from the MAF and the O2 sensor and maybe some other things, and you knocked this connector loose while working.

--scott

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