Re: 85 2m4 engine problem

"Hank" <hank@[EMAIL PROTECTED]
> wrote in message 
news:n3pq93hv7hq2gedg14iqjbl0nus39m48j8@[EMAIL PROTECTED]
> On Tue, 17 Jul 2007 09:03:24 -0700, "Les Benn" <lesbenn@[EMAIL PROTECTED]
>
> wrote:
>
>>
>>"Hank" <hank@[EMAIL PROTECTED]
> wrote in message
>>news:m73o93p8jb7nc7nnq2ujifclflhqb59idd@[EMAIL PROTECTED]
>>> 85 2m4 180K miles runs good cold after it warms up it looses power on
>>> low rpms. The car when i say it looses power it like stumbles or bucks
>>> mainly noticable uhen the rpm's are low like running on the highway
>>> climbing a hill at 60 65 mph it will buck if I down ****ft to 4th
>>> getting rpms up it will climb the hill easier Also when I am first
>>> getting onto the highway it will start to buck if I try to accelerate
>>> to quickly.
>>>
>>> I replaced the O2 sensor as it had a code and I replaced the plugs,
>>> cap & rotor and one plug wire as it was 18K ohms the rest are around
>>> 2K. swaped the MAP sensor and replaced the TPS as well.
>>> I replaced some of the more older looking airline tubes as well.
>>> There are no codes at this point.
>>> Any help would be great as its driving me crazy.
>>> Hank
>>Hank have you changed the fuel filter?
>>
> Yes fuel filter replaced and checked EGR as well ran it tonight it
> runs good when cold but as soon as it get near operating temperature
> it runs crapy again ??
> Thanks
> Hank
Is it just at operating temp or when you are driving down the road and it 
reaches operating temp? What about a vacuum leak? Have you done any checks

to see if you have cracked vacuum lines?