StangTangGT

you replace the o2 sensors? sounds like maybe a vacuum leak, did you try spraying some carb cleaner through the vacuum lines to find a leak?

StangTangGT

you know you have cap locks on right?

87 hatch

I LIKE WRITING IN CAPS. ANYWAY, I HAVE CHANGED ALL THE VACUUM LINES AND THERE IS NO LEAKS I HAVE NOT REPLACE THE O2 SENSORS JUST BECAUSE THE CAR RUNS FINE AND THEY ARE EXPENSIVE. DO THOSE REALY CAUSE THIS KIND OF PROB?

WHAT ABOUT MY SMOG PUMP? I THINK THAT THING IS TOASTED. LAST TIME I HAD THE BELT OFF I TURNED THE PULLY AND IT SOUND LIKE METAL TO METAL. I THINK I WILL BUY A BELT TO SKIP THAT PULLEY.

StangTangGT

definitely could be, o2 sensors measure air fuel mix in exhaust and if they are bad it could/should throw the reading off causing it to not run right. but just pull one out and you can tell if it needs replacing. you still have the stock catalytic convertors? they could be bad, then that will mess with the smog pump which will mess with the engine.

vfast

I believe the computer in hunting so to speak..does this car still have the S/D computer?

fordguy17

mines making noise too. it won't screw anything up will it? (gaskets, o-rings etc)

silver91gt

I ran mine for a year like that and the other day, I go to fire it up, and it sounded like the belt was slipping on a seized pulley, and when I revved it there was stuff flying out of the front.
so I got a new pump.

changing the fluid and flushing it out will help too, this is one fluid that no-one thinks of changing. if its low, just put more in, thats how I used to do it
mine also had tranny fluid in it as well as power steering fluid.