Emissions problems - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

RK4332 · 09-07-2006, 17:47

I have a 1992 MGM. I took it in for emissions test saturday, and it failed. I found a vaccuum leak in the PCV line. Fixed that, and passed, but only by 1/10 of a point. High HC. After the e-check, i cleared the computer, and drove it until the check engine light came back on. The codes i got were 542, (Fuel pump circuit open), and 332, (Insufficient EGR flow). I think i can probably figure out the 332, but the 542 is kinda bothering me. The car runs fine most of the time, but sometimes it wants to stall when idling. Any help on any of these 2 issues would be appreciated.

amo4387622 · 09-08-2006, 07:43

well if the car wants to stall while idleing than that is your IAC vavle. As for the fuel pump not sure.

88grandmarq · 09-09-2006, 19:27

check your fuel pressure, the pump may be weak and the verge of failure.

RK4332 · 09-09-2006, 19:29

Hmmmmm, My fuel pump is kinda loud. I'll check that.

88grandmarq · 09-09-2006, 19:47

Clean the hot wire on your MAF sensor, that should help.

on the EGR, most likely the EGR channels in the lower intake are gunked up, also check the EGR supply tube, those cars are notorious for breaking the tube.