Sometimes on the freeway, the RPM goes up and down between 3,000 and maybe 2,500. Is it the pistons and cylinders or the timing?
2007-03-20 20:00:33 · 6 answers · asked by dsert_fox 1 in Cars & Transportation ➔ Maintenance & Repairs
what size is the engine ? the 4 cylinders can jump around like a paint mixer and be normal , the V6 will idle a bit weird , the highway reving thing is strange , if it's an automatic is it topped up on fluid ? if your getting a stable vacuum reading your automatic trans. or torque converter could be failing
2007-03-21 04:43:50 · answer #1 · answered by sterling m 6 · 0⤊ 0⤋
Difficult to diagnose from your very brief description, but if the RPM is changing and you are giving it steady throttle I'd check the fuel system for blockages- how's the filter? An ignition problem is unlikely on an 89- it would most likely stop the car altogether.
2007-03-20 20:13:57 · answer #2 · answered by llordlloyd 6 · 0⤊ 0⤋
Trade it in for a 1966 mustang, Youll thank me later.
2007-03-20 20:07:43 · answer #3 · answered by Anonymous · 0⤊ 0⤋
verify your throttle linkage. verify for vacum leaks. would be fairly some issues seeing those vehicles are becoming older. did u pull purely the tranny to alter it or did u take the motor out for another reason? u can e mail me at jump454 at gmail and that i'd be waiting to help ya out
2016-12-15 05:10:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
here's a artical on Ford engines that is interesting. (I found it on ebay motors guides)
2007-03-21 10:10:48 · answer #5 · answered by Anonymous · 0⤊ 0⤋
could be a lot of thing, vacum leak,filter,injectors,if it has a lot of mileage check compression.
2007-03-20 20:52:57 · answer #6 · answered by stangdriverus 2 · 0⤊ 0⤋