Engine Performance problem
2002 Dodge Neon 4 cyl Two Wheel Drive Automatic 130000 miles
Symptoms: Car bogs (If I could call it something) down when I floor the accelerator to merge into the freeway or pass.
Troubleshooting: Replaced Spark Plugs, Wires, Coil, TPS, MAP, had injectors professionally cleaned, had pressure pump and regulator checked, no egr that I know and no leaks in the manifold that I could find. The engine has 180 lbs on 3 cylinders and 200 on one. I had the transmission oil emptied including converter and filter replaced. Did find the hose going from intake manifold to Brake booster insanely loose. Looked like it expanded or like there was something between the intake manifold spicket and the hose. Because the hose hole was way larger than the manifold spicket it was attached to. I placed a hose clamp on it and tightened very tight. The improvement was significant but the acceleration lag is still there. Mileage is very poor when I try and accelerate gives me 22 mpg. A great leap from 36 mpg when accelerate slowly. Please help me the mistery is killing me.
Sunday, January 4th, 2009 AT 7:20 PM