Car is hesitating.....

[Pootiestang]

Hey guys, once again the stang is having problems. I fired her up this morning and all was well. I let her warm up a bit and then proceeded to get on the highway. The car had been idling just fine and there was no problems under normal acceleration. Once I was in 5th gear crusing along the highway at about 65 mph, and tried to accelerate just a bit she started hesistating. But if I backed off and just kept it constant, she would go back to normal. Just meant I couldn't accelerate very quickly if anything. Once I got off the highway about 20 miles later every 5 or so seconds, the car would dip in rpm during idle. I could aslo feel the shifter shacking as if one of the cylinders wasn't firing or something. I checked the wires and everything seemed good so im not sure what it is. Sometimes Ill fire her up and she is a little hesistant at idle, but after warming up she goes back to normal idle.I haven't had anything work done on the car recently so nothing has been fiddled with, altho it was about 20 degrees outside last night if that would effect anything.

Anyone have any ideas? Ill clean the AIC out later today.

 

[2002BLGT]

sounds like a coil or plug might be taking a dump on you

 

[Pootiestang]

Is there any way to tell which one? What are the prices for replacements? I have a new set of plugs I could put in. But never had to replace a coil and have 60k miles on the car.

 

[Stangly w/03 GT]

I HAD A SIMILAR PROBLEM WITH MY CAR HITCHING.
I went to the shop and their computer was indicating RANDOM MISFIRES on cylinders 1, 2, 5, 7 & 8. The mechanic said I'm going to change the plugs first to which I replied HUMM (because I was doubting his plan of attack). Well to my major embarssment he was correct. Tentative I will credit 85% of the hitching problem as gone (the other 15% is still under scrutiny this weekend).

The problem: Plug Fouling with a red tint on them. The red coating is a result of the additives in lower-quality unleaded fuel and will be visible on the plug's ceramic insulation. He also indicated that fuel boosters and over the counter fuel injector can lead to this problem too. He said he has seen this twice in the last month and indicated that the gas additives in the winter months may change. This may not be every ones problem but it easy to pull out one plug and look for a red coating on the ceramic part of the plug. Good luck!

Pull some plugs or replace them and see what happens?

 

[Pootiestang]

Thanks for the reply! Im taking the car in on Tuesday for the 60k mile tune up. I may buy a new set of NGK plugs and have them put them in. I dont have any of my tools on campus.