Recent content by gladesteen

You are not at this point yet... But for the sake of argument, this Owner of a 2002 Trailblazer shows How to R&R the Full Set of the Multec II EFIs (not an easy task and a Real Shame that he only replaced ONE) and he describes the Engine Performance differences he experiences after doing so...

MRRSM, the recent instance where i had the flashing SES light was after several Months of stuttering / stumbling issues. I think it finally got to the point where the Cat was completely clogged up. It actually sounded like I was driving with half a muffler. Was so loud and ridiculous. When I had...

Just checked and the Torque app had a nice big update to it. Honestly I havent used it in years, but I will check both out. As far as my troubleshooting, its not the spark its the fuel either by the Coil or Injector. IMO

Thank you ! They have much better ratings vs Torque. I'm going to install it and play around tomorrow. Might not be driving. Its supposed to be Ice/Sleet/Snow here in NH tomorrow.

Thanks TJBaker57, just to be sure you're talking about the Car Scanner ELM OBD2 app. Is that correct ?

Ok, and that is why I did not like the Torque Pro. It was hard to nail down REAL TIME stuff. Maybe I can just see it happen when the stumble occurs to pinpoint the issue down to the cylinder, but who knows. I'm going to see what the OBDlink adapter and APP shows me. It's crazy what you can do to...

I'm wondering if its a bad injector ? Has 211K miles on it. Could be a suspect.

MRRSM, it does Exactly feel like that, but i ruled out transmission issues because there were times where I swapped out the plugs/coils and the shudder/stumble went away. Also, and maybe im not right here, but would the trans not shifting from 3-4 cause massive fuel dumps into the Cat where it...

How complicated is it to add the "PID" for this ? From your screenshot Cyl #5 was having some issues. This would help me a LOT to trace this down i think.

What APP is this ?

Is that through OBD2 port monitoring via an App ? I have the OBDlink App and a special OBD2 port connector for my 2020 M550. It allows me to code different things into the car. Pretty neat. I will try it on the Bravada and see what options are available.

Picked up the new plugs and installed today. Also cleaned the TB. It was not even that dirty. The old plugs had no tip damage this time. She idles better and smoother throttle (probably the TB), but the cruise control stumble is still there. I also tried the starter fluid trick. Nothing...

It was random. I am picking up the new plugs this afternoon and will tackle this either tomorrow or thursday. Will take a few pics to show the new/old plugs differences.

Owe you a beer Moose if this solves this (sounds legit). THANK YOU !!! And Merry Christmas to you and yours. I will post results. Picking up 'legit' $8.99 41-103 "REAL" iridiums either tomorrow or Wed.....i get 10% off for Military, so that will help !

Thank you MRRSM, I will try the starter fluid trick, but Moose just sent me the "fake" Iridium from Amazon link. And indeed those are the exact ones ive been using 3x over the past 3 yrs. I wonder, and hope, this is the issue. It seems logical as the tips were frying within 1 year.