swathdiver
Full Access Member
Get the idle squared away and that will probably alleviate the transmission symptoms unless it damages something.
Check for vacuum leaks and clean the throttle body properly and take it from there.
2004 Tahoe 5.3 1000rpm idle and harsh 1st to 2nd
- Thread starter Clarko88
- Start date
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Get the idle squared away and that will probably alleviate the transmission symptoms unless it damages something.
Check for vacuum leaks and clean the throttle body properly and take it from there.
iamdub
Full Access Member
Vacuum leak? Dirty/sticking throttle? Dirty MAF sensor?
*Edit
Simultaneous posts, James
*Edit
Simultaneous posts, James
Scottydoggs
Full Access Member
def start with a tb cleaning and check for vac leaks. vac leaks can cause a hard shift as well as a dirty maf sensor. you can clean it, only use maf cleaner tho.
you can clean the tb on the truck still, but all the carbon build up is on the back side that you cant see from looking it, so its best to remove it and clean it real good.
you can clean the tb on the truck still, but all the carbon build up is on the back side that you cant see from looking it, so its best to remove it and clean it real good.
iamdub
Full Access Member
I say to remove the intake manifold and clean EVERYTHING. The gunk in the TB is one thing, but all that oil and crud inside the manifold needs to come out, too. I used a few cans of Super Tech brake cleaner and cheapest bottle brushes Walmart had in the baby supplies section to clean the runners and insides of my brother's intake manifold when de-sludging his engine. Installation of a catch can is highly recommended to slow down the sludge from building up again.
hate when that happens
you may have to shotgun it and replace maf, tb, intake gasket and while your in there do the knock sensors (go oem on the sensors & harness and silicone them in) fel-pro makes a metalized intake gasket. Sometimes that's just what it takes and if your feeling froggy do the plugs/wires and maybe coil packs also then your good for long while.
