Mechanics

NO SURE WHATS WRONG

2000 Dodge Ram • V8 4WD Automatic • 140,000 miles

Okay I've done prior maintenance on my truck over the last month. I've gave it a tune up, a new radiator, oil change every 3000 miles, new air filter, transmission fluid change, new shocks, drums, shoes, brake pads, and a sealing in the back axle. I will be replacing the cat converter and exhaust for a Magna flow hi flow converter and a flowmaster 50 series. The a/c isn't working and recharging it don't help. The crusis control doesnt work. After all the work I've done to my truck so far and it still acts up. When I start my truck and start driving down the road, it acts like it is loading power and begins to slow down yet the rpm doesn't rise. When I let off the gas and go to accelerate again it seems fine but occasionally back fires. Is this a transmission, exhaust, vacume or a sensor problem? I'm not sure where to look next for this problem
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Falcon19
March 1, 2011.




Check engine light coming on? Has fuel pressure been checked? When it backfires is it through exhaust or intake?
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Docfixit
Mar 1, 2011.
Engine light isn't on and fuel pressure is good back firing seem to come from the intake

Tiny
Falcon19
Mar 1, 2011.
Would need to have a diagnostic scan done see if gives a clue. Many reasons this could be happening scan of all input and output sensors and controls is logical step to take.

Backfiring is often caused by a vacuum leak.

Docfixit
Mar 1, 2011.
Check the tps

Tiny
Mopar4Life98
Mar 26, 2011.

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