I did my routine mtce on my 2000 V6 SC'd Runner this past weekend. I have not really done any service or cleaning since EC4RJ04 and found some disturbing things.
First, water almost found it's way into my throttle-body after my blasting through one of the water crossings (I know it is not wise to do but in my situation at that time I had no choice). When I pulled the air filter it was caked with dirt, silt, and dried-on mud. When I looked to see if the intake needed cleaning, I found that mud and water made it way up into my intake tube, past the MAF and just into the opening of the throttle body. I took the entire intake out, airbox and all, and first cleaned out the throttle body with sensor-safe throttle body cleaner. Then I removed the MAF from the housing and cleaned the entire airbox and intake tube in mild detergent and hot water. Everything was flushed out with hot rinse water and let dry. I cleaned out the MAF (recently installed new 3 months ago) and re-assembled everything. Then I took my rig on a test drive down the local highway 65-70 mph. All seemed fine until I found the need the next morning to accelerate into traffic and upon pressing the pedal to the floor to accelerate my truck starts to choke out around 3700 rpm and will not go past 75mph ... period. It actually feels like it is being choked of all power instead of pulling steady to redline like it normally did. Almost like it is straining to rev up to redline as if something is holding it back.
Is it possible that when I cleaned the intake that I dislodged some crap in the throttle body and it is plugging up some internal orifice in the throttle body??? I plugged in my Scantool and no codes and of course no MIL either. The MAF appears to be registering the temp and airflow correctly as close as I can tell. Until I performed the cleaning, I did not have this acceleration problem. Even though the air filter and box were plugged up with dirt and other crap it still seemed to run fine. I also checked all the hoses and all check in good consition with no cracks or leaks. I plan on pulling the intake off again this weekend and will try to reclean the throttle body again to see if that helps. Is it also possible that loading the throttle body full of cleaner that it may have damaged an O2 sensor ?
Any suggestions ??? Thanks in advance ... Gadget, if your out there ..
Ricochet
