Hello,


first cool this is here.


Well to the problem.


I have searched "WEB" also asked a few people.


THe mountianeer 98 seams to run great , well every once in awhile coming to a stop it dies. it also sometimes while going about hwy speeds then it will miss. it gives me a code once in a while, i think it was 420 something, about cat issue bank one. have no idea what bank one is. lol


Any help would be great. I am leaning toward afuel pump problembut dont know if there is any other control for fuel control.


Thank you in advance.

is your mountaineer a v-6 or a v-8





as for thep0420 code it does mean the cat convertor is not working properly

oops forgot v-6.


man thats bad, now which side is bank one?


Thank you in advance.

The stalling is a possible intake manifold gasket the v-6's have an issue with that. Or it could be a Idle Air Control valve.





Ill work on finding out which side is bank 1 i believe 1 is always on the left but want to make sure.Edited by: MercAdvisor

CoolI might actually be getting somewhere or at least a direction.


I think the Idle Air Control Valve would be easier to change will try it first. lol


I can change that right, like any other sensor?


I will do a test on the intake, hopefully its not it. but its probably cheaper.GRIN


Thank you again.


I really appreciate the help.

bank 1 is the left side.. the idle air control valve is like any other sensor and on some cars is super easy to change.

Thanx,


I will mess with these and post my results. GRIN


Thank you again.

This sounds like the problem I'm having with my 2002 Mountaineer, V-6. Has my model been noted with this problem?

Never got back smileys/smiley19.gif

Hello,


Well I am a little late but finally did get back to the Merc. issue.


Well I took atorch and found no leaks, so assumed it was the IAC.


So today i went out lookingand only could find a V8 one.


Well


V6 = $100+


V8 = $50+


Looked at two and the only problem was the wire came out the back on V8 one. put gasket "came in box" on then tightened down.


Well everywhere I drove it today before, it would die. "Hence why I had to get er done. .lol "


Now it runs better and does not die yet.


So I think we got it. GRIN


Thanx Much.

JUST FOR FUTURE REF BANK 1 IS ON PASS SIDE AND THERE IS ABULLETIN TO REPROHRAM PCMFOR FALSE CAT MONITOR CODES