Rough idle only in cold weather? Please help

[mattt]

Theres only one oil in a Tahoe and that would be Engine Oil. Both of my 2003 Tahoes have an oil cooler and so does my 2005 Yukon Denali.

rockola1971.....any luck on those "engine oil cooler" pics that both your Tahoes have??

 

[mattt]

I guess rockola1971 doesn't have engine oil coolers, and he is just mistaken or confused about what "cooler" he is looking at in the grill, in front of the radiator. I still think the factory installed engine oil cooler was a no go on a Tahoe.

 

[Cattivo]

Not trying to hijack but I'm having similar problems with rough idle and didn't want to start a new thread for basically the same problems. I've replaced all four 02 sensors, removed my k&n cai and replaced with OEM air intake, new maf, new plugs, wires, coils, fuel injectors, fuel pump/filter/regulator etc. all ac delco parts

I went ahead and ordered new knock sensors, harness, permatex rtv silicone, intake manifold/valley cover gaskets, and a new intake manifold...I want to try and replace everything but the intake manifold first to see if that resolves my issues.

The only thing that's got me scratching my head is, after I disconnect the maf sensor plug it runs and idles perfect????? I pulled 5 codes yesterday...any help would be greatly appreciated

 

[95escahoe]

Not trying to hijack but I'm having similar problems with rough idle and didn't want to start a new thread for basically the same problems. I've replaced all four 02 sensors, removed my k&n cai and replaced with OEM air intake, new maf, new plugs, wires, coils, fuel injectors, fuel pump/filter/regulator etc. all ac delco parts

I went ahead and ordered new knock sensors, harness, permatex rtv silicone, intake manifold/valley cover gaskets, and a new intake manifold...I want to try and replace everything but the intake manifold first to see if that resolves my issues.

The only thing that's got me scratching my head is, after I disconnect the maf sensor plug it runs and idles perfect????? I pulled 5 codes yesterday...any help would be greatly appreciated

View attachment 76137

View attachment 76138

View attachment 76139

View attachment 76140

View attachment 76141

Order new intake bolts too the TSB says not to reuse them


Sent from my iPhone using Tapatalk

 

[Cattivo]

Can anyone confirm the torque settings for tightening the knock sensors, is it 15 inch lbs or foot lbs? Also need torque settings for tightening the 10 intake manifold bolts. I've been searching and I keep getting different numbers

 

[95escahoe]

Can anyone confirm the torque settings for tightening the knock sensors, is it 15 inch lbs or foot lbs? Also need torque settings for tightening the 10 intake manifold bolts. I've been searching and I keep getting different numbers

For the intake bolts I found this




Sent from my iPhone using Tapatalk

 

[Cattivo]

For the intake bolts I found this




Sent from my iPhone using Tapatalk

Thanks, looks like I'm going to need to buy an inch lb torque wrench now