How to Diagnose problems

[greenlinc]

I have a question for you guys, yesterday my car chugged (hesitated) a little bit when I was leaving work(this happened pulling out of the lot when I hit the gas (1/4 throttle or so), the car had been running about 5 minutes. I noticed on the way home and now on the drive back to work the car seems to run OK at part throttle and idle but when I get on it like to get on the freeway I have NO POWER, and it feels like it may be running rough or missing when I get over about 3k rpm's. How would I start narrowing down what the problem might be. I searched through a bunch of threads and see all kinds of different things it might be. My car: 170k, fuel filter changed last year, chip, plugs and wires about 15000 miles ago. ANy suggestions would be appreciated.

 

[kustomizingkid]

I would 1st get the fuel pressure tested...

 

[MarkVIIIS]

If the engine lights on go to autozone and see what codes are on it. You should check to see if you got a vacuum leak somewhere, maybe your pcv valve hoses or something.

 

[greenlinc]

I forgot to put in it has not thrown a CEL either

 

[billcu]

I would try removing the chip and see if the problem is still there. That would eliminate the chip or the contacts to it being the problem.

 

[Jeffintampa]

When it is chunking try to keep it chunking you may get a code light, Mine chunked I had to change my wires, even tho I had put new wires on before.

 

[greenlinc]

Well Bill I tried your suggestion first (cause it was the easiest), and the car runs fine now. I must have had a bad connection. I will try cleaning everything and re-installing soon. Thanks for all the suggestions!