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thanks jrichker.. O2 sensors are brand new. do you happen to have a detailed vacuum diagram for the 89 5.0? and fyi, smog pump and everything associated with it are deleted. also, I replaced 55mm TB with 70 from 93 cobra, and used my existing MAF sensor.. not getting trouble code for...

89 mustang lx 5.0 I know this topic is often covered, but this is quite different than from the problems that I've been reading for the past 2 hours. My turn signals went out once before for some odd reason, I fixed them, dont remember how, I think I put in a new connection for hazard switch,a...

unfortunately, this is absolutely the most confusing test I have ever read and performed. no results. I got 5 volts when I tested the egr sensor. and what does the map/bap sensor on the firewall have to do with this test?

Im getting code 31 evp pfe below circuit. engine seems to run good just not at its best. been a while since car had an engine in it. newer engine and car has been revived. many new parts. havent put many miles on it yet still needs alignment and smog after I get it running perfect. I drive it...

my turn singals dont work either. I heard the ignition switch on the controls turn signals and many other things including blower motor, and its well known for going bad. can anyone confirm this?

Hello all. new guy here. Im getting similar code 31 instead. engine seems to run good just not at its best. been a while since car had an engine in it. newer engine and car has been revived. many new parts. havent put many miles on it yet still needs alignment and smog after I get it running...