Top Engine Cleaner

[99silveradoz71]

Need to do the oil change over the weekend.  I have 2 cans of Top Engine cleaner spray to use.  I understand that I should spray this into the throttle body with the intake tube pulled aside slightly and the engine running.  I then let it sit for a while.  Then restart and drive.  I was told that the SES light may come on.  Do I need a tool to get this to go off?  Also, someone mentione disconnecting the MAF sensor(not sure exactly where it is).  How/when would I do that?  Thanks for the assist.

[RyanbabZ71]

if the check engine soon light comes on all you have to do is unplug your battery to reset it and it should go away.  No special tools necessary

[bcfitzsimons]

Siverado-don't disconnect the MAF.  You're engine won't run without it-there won't be any input into the ECM regarding air temp, airflow, etc.  Just remove the air intake tube from the throttle body, and slide it down about a 1/2 inch-just enough so you can see the throttle plate.  If you keep the intake tube flush against the TB, you're engine will still pull enough air through the MAF to keep it from stalling out.  

 

Fitz.

[99silveradoz71]

Actually ran it with the MAF disconnected.  The truck stayed lit and didn't stall.  I also didn't get any codes.  My biggest problem was the fan blowing some of the cleaner around.  I used 2 bottles and probably got the equivalent of 1 into her.  I think the second bottle didn't want to spray due to it being pretty cold outside.

[mnstrmdnss]

actually, the last thing you want to do is disconnect the battery to reset the computer. why? cause for starters, you clear the RAM(data stored over time on how the engine runs) in which if you live in a state that tests emissions, you would fail emissions testing even weeks after disconnecting the battery, instead, pull the ecm 1 fuse with the key on, that kills power to the "check engine" part of the computer, buts keeps power to the Ram side of the computer, plus you wont lose your stations on the radio!

[99silveradoz71]

actually, the last thing you want to do is disconnect the battery to reset the computer. why? cause for starters, you clear the RAM(data stored over time on how the engine runs) in which if you live in a state that tests emissions, you would fail emissions testing even weeks after disconnecting the battery, instead, pull the ecm 1 fuse with the key on, that kills power to the "check engine" part of the computer, buts keeps power to the Ram side of the computer, plus you wont lose your stations on the radio!

Excellent good info.  I did find the fuse map yesterday also.  It's amazing what you find when you turn over the EC cover.  Top Cleaner went well with no problems.  With only 39k on the clock I didn't expect noticeable improvement.  She's gotten Techron in the tank religiously since day 1.

[bcfitzsimons]

So how does that motor run now?  Is there any noticable improvement?  

 

Just a word of advice-I changed out my spark plugs a couple of days after using the cleaner;  you should have seen the crud on them-

And they were the OEM platinum plugs with only 15K miles on them-

 

Fitz.

[CMNTMXR81]

If you disconnect the MAF, the PCM should go into speed density mode.  That's the old way of doing things before MAF's came around.  

 

It allowed the engine to run siffuciently at idle, but I probably wouldn't have driven around town with it like that.