I never post here, because I'm a ninja with the search button, and I'm a mechanic/tuner by trade, except this time I'm stumped, and everyone I ask had no actual experience with swapping non sportshift autos into 2002.5 and up cars equipped with it.
My problem started with a noise under deceleration only, a buzzing/knocking that went only with the speed of the wheel, not the engine, and even when I put the car into neutral at any speed. I put the car off the lift and ran it in drive, and the knocking could be heard clearly in the case just above the diff, but was quiet under cruise or acceleration. No clues as to what was causing it, maybe a bearing was out, maybe a spider gear or the carrier was busted, all I know is that there are some small metal flakes and some fingernail clipping sized pieces of metal in the pan. So I'm calling this trans busted, even if I fix it, that s*** in probably floating around the valve body, pump, everywhere in there.
Searching on this forum, I have yet to get a clear answer as to whether or not ANY FN4A-EL trans will do, some say yes, some say no, there's nobody I can find that had ACTUALLY tried it. I talked to a friend at Mazda and he have me some insight but it still isn't an actual yes or no.
According to Mazda, the part numbers are close, but one digit off from each other, between a transmission with sport mode, and the one without, but this is where it gets tricky. Both complete transmissions are the same exact price. All the internal parts, from the valve body to the wiring harness, and to an extent, the ENGINE HARNESS, are the same part numbers between a 2003 protege5 and a 2001 protege sedan, the only place they differ is the shifterlinkage in the car, but the CABLE going to the linkage is even the same on both. So he looked up a transmission for a 2002 sedan, and sure enough, the part number for a SPORTSHIFT transmission pops up, in fact, it's the 2003 transmission that pops up for ALL protege models, it superseded the older NON sport shift transmissions. So the question is, if a sport shift transmission can go in a non sport shift car, one would think they should be backward compatible. But whatIu would really like, is for someone with some automatic experience to step up with some insight. I'm not a dummy, I'm just not wanting to waste money, this is my wife's daily, if it was MINE, I'd do a V6 swap, but she's not interested hahahaha.
My problem started with a noise under deceleration only, a buzzing/knocking that went only with the speed of the wheel, not the engine, and even when I put the car into neutral at any speed. I put the car off the lift and ran it in drive, and the knocking could be heard clearly in the case just above the diff, but was quiet under cruise or acceleration. No clues as to what was causing it, maybe a bearing was out, maybe a spider gear or the carrier was busted, all I know is that there are some small metal flakes and some fingernail clipping sized pieces of metal in the pan. So I'm calling this trans busted, even if I fix it, that s*** in probably floating around the valve body, pump, everywhere in there.
Searching on this forum, I have yet to get a clear answer as to whether or not ANY FN4A-EL trans will do, some say yes, some say no, there's nobody I can find that had ACTUALLY tried it. I talked to a friend at Mazda and he have me some insight but it still isn't an actual yes or no.
According to Mazda, the part numbers are close, but one digit off from each other, between a transmission with sport mode, and the one without, but this is where it gets tricky. Both complete transmissions are the same exact price. All the internal parts, from the valve body to the wiring harness, and to an extent, the ENGINE HARNESS, are the same part numbers between a 2003 protege5 and a 2001 protege sedan, the only place they differ is the shifterlinkage in the car, but the CABLE going to the linkage is even the same on both. So he looked up a transmission for a 2002 sedan, and sure enough, the part number for a SPORTSHIFT transmission pops up, in fact, it's the 2003 transmission that pops up for ALL protege models, it superseded the older NON sport shift transmissions. So the question is, if a sport shift transmission can go in a non sport shift car, one would think they should be backward compatible. But whatIu would really like, is for someone with some automatic experience to step up with some insight. I'm not a dummy, I'm just not wanting to waste money, this is my wife's daily, if it was MINE, I'd do a V6 swap, but she's not interested hahahaha.