reduced engine power with new throttle body
08-07-2009, 12:59 AM
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reduced engine power with new throttle body Just need a little insight on TPS and mass air flow working together. My 06' truck goes to reduced engine power after a few seconds. I made sure that both tps switches and both pedal position sensors match voltage.They have the same when I first turn the key on and then after 10 to 15 seconds it kicks off of what I assume is high speed and the blade closes a little more and no longer have the same voltage which is about how long it takes for the reduced engine power to kick inn. I was also wondering because of all the engine mods if now the MAF sees alot more air at a given throttle position causing my problem. I'm going to put the stock TB on tommorow and get all the voltage readings to compare. The engine has cnc ported Dart heads that flow 329@.600in./246@.600ex., comp cams rockers,pushrods,custom grind cam, 10.75to1 compression,edelbrock pro flow manifold with a 92mm throttle body, Fast injectors,fuel rails and pump kit, long tube headers and 3in. stainless ex. to the tips, 3000 TCI stall and 4.88 gears with 35in tires. I have smaller and larger TB once I get it on the dyno. Thanks and sorry for the long post.
08-07-2009, 12:26 PM
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With key on, engine off with the hood open does the tac module hum/whine? If the stocker works fine and you have the wine,(on the larger TB) possible bad tac module.
08-07-2009, 07:56 PM
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It is working fine and I was thinking that was going to be a problem. No one around here has a good rep at programming and tuning. This FAST programmer the customer has doesn't do much, maybe ok for mild mods. Looks like I need another toy. What do you guys recommend for a programmer with all the bells and whistles but user friendly. We won't do alot of this but it has to be right. Thanks
