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power issues

Discussion in 'GM Powertrain' started by MTM, Jul 12, 2011.

  1. MTM

    MTM Rockstar ROTM Winner 100 Posts

    I have a 99 2500 4x4 with 102,000 miles.I am having problem wih getting my full power.I cant even burnout or anything.I can floor it and it chokes down really bad.I'm very easy on my truck and never turn over about 2,500 rpms.So if anyone has any suggestions let me know

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    You have a 3/4 Ton 4wd Truck that has 102K miles on it....and you mentioned above that you Floor it and it Chokes Down Really Bad......Yet you stated that your Very Easy on your Truck and Never over about 2,500 RPM's??.....

    What Engine....Gears.....Size Rims/Tires do you have on the truck Now??.....and what kind of maintenance have you done to the New Plugs/Wires....Filter's Air/Fuel??......and do you have any Performance Mods installed on the Truck.....CAI....Headers etc....
  3. MTM

    MTM Rockstar ROTM Winner 100 Posts

    well i drive it easy and im saying i floor it,like i get on the highway and it boggs down so i give it more to see if it clears up but just boggs down.have no aftermarket air filter no power mods.has a 5.7 run regular fuel has a 2'' lift with 33'' dyna pro mt's.3:73 gears.have regular maintance on the truck
  4. stephan

    stephan Rockstar 4 Years 5000 Posts

    When you're trying to burn out, are you power braking it?
  5. MTM

    MTM Rockstar ROTM Winner 100 Posts

    well like im not trying to smoke em im just sayin i cant even break them loose.i dont burn out in my trucks especially on $1,000 tires
  6. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Well the big question is the check engine light on??? if so what codes.. also when was the last time you did a tune up? (plugs wires cap rotor?) and what type of plugs are you running in the engine?
  7. MTM

    MTM Rockstar ROTM Winner 100 Posts

    well i just got the truck not to long ago think november so really havent done any of the plugs and things you mentioned.theres no light.thought it might be my timing but that would have thrown a code if it was,its really wierd how it runs it will run perfect of you accelerate easy but if you try to give it a decent amoutn of throttle like passing or getting on the highway it boggs down you can back out of it and get back in it and it will not sure what to think
  8. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Take a look into the intake, and see if you smell raw gas.... if you do then chances are your Fuel Pressure Regulator is shot. Also if you havent done a tune up then it is deifnately time. and put in a good set of AC plugs. since the need for good plugs and actually a new cap and rotor will cause the symptoms that you are talking about. Also while you are doing the tune up i would take the time to remove the throttle body and clean it up really good with throttle body cleaner.
  9. MTM

    MTM Rockstar ROTM Winner 100 Posts

    ok well that sounds like a good start.i know that i put AC Delco plugs in my other truck when i did the cap and rotor and it made a huge difference in performance.well wouldnt the fuel pressure regulater cause it to have a change in fuel pressure?In my other truck which is a 96 i had to change that regulator b/c it ran terrible.
  10. MTM

    MTM Rockstar ROTM Winner 100 Posts

    figured out my problem I had a blown intake gasket also replaced cab and rotor and plugs.fixed the problem it's all good now.Thanks for all the advise

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