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xt6 engine problems


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im planning to drive over to montana at the end of the month, and cant seem to pinpoint this problem. always runs good cold, and when its warm it'll occasionally run like spoob(sputtering, no accel), but if i floor it for a second its back to running normal. i've clean the maf and replace the air filter, it tested "good" according to the fsm test procedure, same with tps, except i have no shime so i cant do that one part of the test. coolant temp sensor also test's good. no cel's at all.  also ive recently replace all the plugs, plug wires, cap and rotor, and cleaned the bypass-air-control(its tested good too). I'm not really sure where to go, and it seems thats tps's are 300+ and new maf are 400+(rebuilt are 95, but the company has a reputation for poor quality and im not into that) so i cant just buy the parts and replace one at a time till its fixed.

any help is greatly appreciated

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