95 Protege 1.5 severe hesitation

Mazda Forum Mazda Classifieds Photo Gallery Member List Search Contact Us Sponsors
Models Mazda News Mazda Recalls TSBs Timeslips Register Login

95 Protege 1.5 severe hesitation

Printable Version

Mazda >> Mazda Vehicles >> Mazda Protege >> 95 Protege 1.5 severe hesitation

Page: [1]

Message

<< Older Topic Newer Topic >>

95 Protege 1.5 severe hesitation - 4/29/2008 4:54:17 PM

Kevin B

Posts: 2
Joined: 4/8/2008
Status: offline

I need some major help. I'll start at the beginning.

Last November My idle was up arround 2000 RPM, Surging to 2500. I did some research and found out that the idle control valve could be plugged. I took it off and the water jacket was plugged. Cleaned it out and put it back together. The idle went back down to 800 RPM where it was supose to be. The car developed a severe hesitation during acceleration. At the same time I worked on the idle control valve, I replaced the plugs, wires, cap, and rotor. Thinking I might have put bad parts in I put the old ones back in one at a time. The car ran worse. The next thing that happened was a check engine light and codes indicating #2 cylinder misfire. Gas milage dropped from 33 to 26 MPG. Replaced the injectors and milage went back up. Still have severe hesitation, car shudders if you try to go up any small incline. Need to feather the gas to get the car to go, but it idles beautifully. Also cleaned a plugged EGR valve Vaccum line, and the MAF sensor. I cannot find any vaccum leaks any where, I sprayed carb cleaner arround all the lines and the engine never faultered. Got a new set of check engine codes that are now calling out a #1 cylinder misfire. Seems to missfire less between 2200 and 3000 RPM in 4th or 5th gear on the highway.

I know this is a lot of information but I figured I would give you as much info as I could. I"m out of ideas.

Kevin