Recent content by mcc

Sorry for the very late reply. Since posting my Envoy's started having issues with the AC cycling on/off more rapidly than usual, causing rev dips each time. The "shudder" never went away but never got worse. The transmission has a bad history and is slipping more frequently now. It's got at...

This may seem simple, but have you tried setting the temperature to the lowest setting? My Envoy has 3 settings: Fairly cold (60°), A little less cold (61° - 89°), and warm (90°). The recirculate hasn't worked for a few years. You may just have some faulty sensors like I probably do and it's...

Unfortunately, It's going to be a little while before I can take a good look. My apartment lease forbids me from working on my car so it's not as easy as just finding some time to pop the hood. I'd rather not be fined. Maybe I can drive it somewhere more friendly next weekend- until then, it's...

Not yet- I just finished finals week as a senior in Computer Engineering, moved to a new apartment, spent lots of hours shopping for furniture, and am now helping two others move. And I'm starting an internship soon. Hopefully I can take a closer look at the issue this coming week.

Car: Driven rarely. I have some diagnostic tools but buying every possible thing I can get my hands on for every possible situation adds up to $$$. Smartphone: Used to answer time-critical emails that directly effect my education. People routinely send me emails that they want answered within...

The plugs were done by a mechanic. I don't know if they used dielectric grease or not. I added foam under the rubber hood seal last year in an attempt to avoid the drip problem. Nonetheless, I'll take a careful look at it as you describe when I have the time.

Thanks for all of the suggestions so far! It's finals week so I have limited time to troubleshoot for now. I just walked out to the lot and let my Envoy warm up while watching Torque. STFT: Usually in the -4 to +4% range. Extremes were -10% and +9% (but very rare) No current or recorded...

It has ~109k miles on it. Some recent maintenance includes: [Summer 2011] Battery, belt [102.5k] Oil change @ local shop w/ Chevron 5W-30, 2x techron treatments, transmission flush + filter, transfer case fluid, ACDelco 41-103 plugs [103.5k] Cleaned throttle body [104k] Coolant flush, new...

It was thoroughly cleaned about 5.5k miles ago. It wasn't too dirty either. Edit: And yes, I did a relearn after the cleaning.

When idling at operating temperature, my engine intermittently shudders for less than a second with an interval of maybe 10 - 30 seconds. Torque tells me that the RPM drops to ~560 during the shudder then shoots back up to ~630 before instantly leveling back to ~600. The LTFT is about -9 to -11...

That really does seem like a lot. To add another point of data: 3.7k miles after my last oil change, I had to add less than 1/4 of a quart to bring it back up to full. My I6 has ~109k miles on it and it's filled with Pennzoil Ultra. It saw only dino oil previous to the current change as far as I...

No- the capacitor will not pass the DC current from your battery. It creates a way for AC noise to bypass the receptacle. It's essentially a selective way to keep the power from your battery from being shorted while shorting/buffering unwanted noise on the same line,

Wow! I'm always surprised to see and hear about the difficulty of finding non-ethanol fuel outside of Iowa. As far as I know, all stations here have ethanol-free 87. The ethanol content of premium varies per station. A major ethanol producing state, of all places. :confused:

I have the same suspicions- when I travel out-of-state and am forced to buy 87 with ethanol, my throttle response seems to degrade. I always fill up with top tier non-ethanol 87 when I'm in Iowa. I get better economy without ethanol as well- enough to offset the additional expense. 87 w/o...

I chose the larger of the two compatible Fram XGs after doing some research on BITOG. What can I say; it's an oil filter- it seems to be doing its job just fine. Note that these are now sold as Fram Ultra. I wouldn't recommend buying any other grade of Fram filter based on my reading. Better...