[IMG][/IMG][:@] Im at a loss here!!! I did a full tune up, fluids, filters, plugs and plug wires, and it is still sluggish. Its relly bad when its hot out too, i cant even drive up the smallest of hills when its hot out, but when its fair or just warm out it runs ok but not as much power s it should. I dont really have any engine mods done to it besides intake and exhaust. The rest of the truck is completely aftermarket but it sucks cause its nice looking but it has lost alot of power and have no idea what the hell the problem is!!! SOME ONE PLEASE HELP!!!

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1. Engine size?
2. Transmission type?
3. Type of intake modification(s)?
4. Do you have one of those "COLD AIR INTAKES" that actually sucks hot "UNDERTHE HOOD" air and actually causes a loss of power?
5. What type of exhaust modification(s)?
6. When did your problem start (after ant type of modification)?

 

2.3L w/stock tranny it does have a cold air intake but i built a air dam on the passenger side where the stock one was so it actually has cold air being forced to it. the exhaust is a cat back flowmaster. these problems just started a few months back long after any mods where done. And it only happens when its hot out

 

You may have a bad/failingACT (Air Charge Temperature) Sensor. This in conjuction with the MAF sensor will tell the computer how long the fuel injection pulse width should be. The ACT sensor also tells the computer how far to advance or retart the timing. If the ACT is telling the computer that the incoming air is hot, then the computer is going to retard the timing causing power loss.