flashing check engine light

[Cobrajet]

I thought those codes looked familar...

I had the same codes a few months ago, but a steady CEL. It would always come back on a certain hill on the way to work. The fix was to replace the MAF, clean EGR, throttle body and fuel injectors. I would suggest cleaning your MAF before doing anything else. I always carry my code scanner to clear the occassional O2 sensor lights, but this one kept returning. Haven't had another CEL since.

[JGeorge264]

Today we put in a brand new MAF ($125 from the local Isuzu dealer), crossed our fingers and started him up. Started right up, idled much smoother - woohooooooo then ^(&^&&%*^ as soon as it warmed up the rpms started surging, check engine light on and flashing.. Grrrrrrrrr... Its not surging alot, but up and down between 700 and probably 1500. We took some starter fluid and sprayed it all around looking for vacuum leaks - nothing. Pulled the coils and plugs and the #2 that the code says was misfiring appeared to be burning the best although the top of the plug seemed to be oxidized. The plug itself was a milk chocolate brown. The rest of the plugs were on the light tan to almost white side.
It starts right up, no foot on the pedal and it doesn't appear to choke out or die. Just runs real rough. In the last two years I've replaced the intake manifold gasket, new egr, new idol control valve, new timing belt, plugs, water pump, had injecters cleaned and motor vacced to clean out the carbon etc. and probably a few things I've forgotten.
I'm sitting close to 138000 miles. The misfire is whats got us stumped at this point. I'm wondering if replacing the coil pack would help? Or the O2 sensors?
Thanks for help and the place to whine. As soon as I get this all figured out and paid for I'll be kicking some more $ to the site. I'm sure you guys have saved me a ton already.

[IndianaVX]

i will try to find where i was reading what im going to say to you......
anyone feel free to correct me........anyway, the flashing cel light is flashing because of the misfire. it is flashing while it counts the number of misfires??? again, i have to find this info again. but i am pretty darn sure that the two go together, the misfire and the flashn cel.

[etlsport]

i think the flashing cel is more of a "hey guys lunch is comin back up!" where as a steady CEL is like "ooooooh i dont feel so good"... .at least thats how it was on my last odbII car

[JGeorge264]

It appears we have resolved the issues... I'm taking back all the foul language and bad things I said while trying to figure out the problem. I love my vx again.
We installed new spark plugs today and 2 new O2 sensors. Not really sure which one cured the misfire cel but at this point I don't care, its fixed! Went ahead with the new sensors since my milage is getting up there and its the same two that have been throwing codes off and on for the last couple years.
I was pretty nervous when I started it up the first time, held my breath til it was warmed up and NO CHECK ENGINE LIGHT.. Yeahhhhh.. took it for a spin and was extremely happy with the new found power. When I give it pedal it wants to go again.

thanks again LDub for the extra help.. its very much appreciated!

Jody