greatone61 said:
Cool lemme know what you think when you install it, I have yet to install mine.
Just finished the install.
The stat change was a pain in arse... remove your air intake system - it made for much easier job (sorta..).
Drain your radiator down using the drain plug with hose attached to it.. I drained about 2 gallons or so... (located lower right hand side of radiator if viewing from front), just connect drain hose, and turn knob about 1 turn.. it will stop.. dont force it! Remember to close close the drain cock.
Remove the stock upper radiator hose, 2 pairs of vice grips needed to remove those damn clamps they use...
I used a T-30 Torks head with extension to remove the bolts on the stat, except for the upper right right one (one with battery ground), that was I think a 11mm deep well...?? cant remember.
The lower left bolt was a pain.. but with Torks and extension and some light, it was not horrible as I expected.
Remove stat cover, be careful not to dump it, otherwise coolant will be all over your engine compartment, dump into bucket you drain radiator into, careful not to lose the housing o-ring, remove stock stat, rinse housing and install the 170 unit, bold back on.
I found it easier to reinstall the left bold first while putting the housing back on..
Just snug down the rest of the bolts, so as to not flex the housing, think of it as a wheel... use a star pattern!
Put upper radiator hose back on housing, and fill with water about about 75%, then re-attach to radiator.. using same method as before to remove it. Those clamps are a pain in the ass.
Did you remember to close the drain cock...!!
Re-fill your radiator with removed coolant... about 50% will fit back in radiator, dump rest in overflow tank.
Dont forget to put radiator cap on... I did this.. and had coolant all over floor... :withstupid: after I started it..
Let run for about 15-20 minutes to come up to operating temps, check fluid levels, etc..
I babyfooted it to gas station, because I had 89 oct in tank.. and filled it up.. with 91, noticed a little bit of detonation.. but it seems to be getting less and less... think that ECM is now learning the motor. But will keep and eye on it.
Thats all...
I did notice a SOTP performance gain... faster revving, chirps tires in 1, 2nd, and Drive. Firmer shifting, etc..
Seems to operate maybe about 5 degrees cooler.
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There are 3 connectors, with small clips on them pull them out with your finger, and sqeeze the bottom side and pull the plugs out. I labled mine before I removed them.. Top, Mid, Bot. Just in case.
Use a 8mm socket to remove computer, reinstall new ECM, and put bolts back in.
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Start truck,
To install ECM, use a 8mm socket to remove ECM.