OK i have a pioneer premier deh-p640 that i put in my 2003 ford ranger well it worked fine for 2 weeks then all off a sudden all 4 speakers in the truck just started making feed back type sounds and i could barely hear anything else now the 2 subs i have hooked to my phoenix gold amp still sounded fine... well i pulled the pioneer out and tossed my stock deck in and the front right speaker was then the only one that did not work. it sounded blown. so i threw a set of pioneer premier 6x8 in the front that i know worked. and the pioneer deck still did the same thing and the stock deck still made the front right one sound screwed up... what are the most likly cuases of this... i know i didnt wire my after market deck wrong because alls i did was buy an adapter that made it plug right into my stock stereos plug... and why is it only my front right speaker would sound messed up...
Replies (7)
accusedmonk on 08/30/2003 10:53:30
Something like that happened to me before I switched out my deck, it could be your speakers, but it might also be that your decks have gone bad, mine did. The rear speaker's bass was gone, sounded horrible, no matter what speakers I put in there, then I switched out my deck with a Sony MP-70, this was somewhere within a month to now, and all the speakers sounded great.
That was my case, but it could be completely different for you, one thing you could do though, is take out your deck, and test the stock and new pioneer not in the truck, wire up all the power cables for it to a 12v car battery, and wire up the 4 speakers to it, that might be a little complicated to do, and you probably won't even have to.
But to me it does sound like your deck went bad somewhere.
ttocs on 08/30/2003 17:19:52
if you have a multi meter, this is the time to pull it out. Check the impedence of the speakers. If you are having problems with them on both decks, I would start there. Check all wiring for shorts...
uochronos on 08/31/2003 00:15:43
well the thing is when i run my stock deck only one speaker seems blown. when i run my pioneer premier all of them emit no sound except a high pitched noise... so i'm pretty sure one speaker is blow but how would that make them all sound messed up on one deck and only one messed up on the other?
Swez on 08/31/2003 10:00:41
If you have a short or open voice coil in one or more speakers, this can affect the HU amps. Suggest you follow the plan laid out by ttocs first and see what ohmic readings you get from each speaker in the vehicle. If any one of the speakers shows below 3 ohms, there is a short in that link. If you get no readings or very high resistance, probably blew the voice coil in that speaker.
Also did you use a factory ground for your newer Pioneer HU? If yes, it really is best to ground the aftermarket HU's to a floor pan ground. Bare metal, under the carpets or higher up if you can work well under the dash. Stock HU's can use the dash harness ground but aftermarket HU's usually need a better ground reference when using outboard amps.
Finally, you may do well to bench test the Pioneer HU as noted earlier. If the internal amps are damaged, you'll know it by the lack of output to a given speaker channel. May have blown some internal preamps or the main output transistors,
If that is the case, you have 2 options:
1. Use outboard amps only to power your speakers and subs, id the RCA circuits still work
2. Replace the HU, after you know you have good speaker connections to each location
Swez
PS My guess, you have a short or loose wire connections from the HU harness to speaker harness. There may be a short in the right front speaker or a pinched wire, to that location. The Stock HU should have played fine otherwise, with the new 6x8's installed.
uochronos on 08/31/2003 16:01:22
OK i feel a little dumb never tried fading the speakers to front or back to see what speaker sounded blown on my stock deck turns out it was my rear passenger side not front. so no wonder replaceing my front one didnt make any since... teach me not to listen closer. but i have a new problem now i cant get the rear door pannel off of my 2003 ford ranger extended cab. so that i can get to the speaker... doesnt appear to be any screwes holding it on but i dont want to reaf on it to hard and brack it. does anyone know how to remove these it should be the same as a 2001 or 2002 model or similar. damn new cars and not haveing chiltons manuals out yet:)
compvr15s on 08/31/2003 20:11:19
do the rear windows, have a latch to open them up a few inches. if so you will have to take that off. my neighbor has a 97 f150 i know way different but im sure they use teh same process on all their vehicles. once you have that off i think there was a screw under tha latch, then the piece around the window pops off and the the lower section slides up. if your back side windows dont open then there has to be screws or christmas tree clips holding it in. try to pull one edge out a lil and see if you can look behind to see how its held in. good luck. and id say swez is prolly right, sounds like a pinched wire or sumting of the sort. repost once ya figure out how to get your panels out please, id like to know just for future reference.
ttocs on 09/1/2003 00:12:59
test the impedence first!! I am not familiar with the 2003's, but I know that some of them come with premuim sound systems. The strange noise me be caused by that....
Replies (7)
accusedmonk on 08/30/2003 10:53:30
Something like that happened to me before I switched out my deck, it could be your speakers, but it might also be that your decks have gone bad, mine did. The rear speaker's bass was gone, sounded horrible, no matter what speakers I put in there, then I switched out my deck with a Sony MP-70, this was somewhere within a month to now, and all the speakers sounded great.
That was my case, but it could be completely different for you, one thing you could do though, is take out your deck, and test the stock and new pioneer not in the truck, wire up all the power cables for it to a 12v car battery, and wire up the 4 speakers to it, that might be a little complicated to do, and you probably won't even have to.
But to me it does sound like your deck went bad somewhere.
ttocs on 08/30/2003 17:19:52
if you have a multi meter, this is the time to pull it out. Check the impedence of the speakers. If you are having problems with them on both decks, I would start there. Check all wiring for shorts...
uochronos on 08/31/2003 00:15:43
well the thing is when i run my stock deck only one speaker seems blown. when i run my pioneer premier all of them emit no sound except a high pitched noise... so i'm pretty sure one speaker is blow but how would that make them all sound messed up on one deck and only one messed up on the other?
Swez on 08/31/2003 10:00:41
If you have a short or open voice coil in one or more speakers, this can affect the HU amps. Suggest you follow the plan laid out by ttocs first and see what ohmic readings you get from each speaker in the vehicle. If any one of the speakers shows below 3 ohms, there is a short in that link. If you get no readings or very high resistance, probably blew the voice coil in that speaker.
Also did you use a factory ground for your newer Pioneer HU? If yes, it really is best to ground the aftermarket HU's to a floor pan ground. Bare metal, under the carpets or higher up if you can work well under the dash. Stock HU's can use the dash harness ground but aftermarket HU's usually need a better ground reference when using outboard amps.
Finally, you may do well to bench test the Pioneer HU as noted earlier. If the internal amps are damaged, you'll know it by the lack of output to a given speaker channel. May have blown some internal preamps or the main output transistors,
If that is the case, you have 2 options:
1. Use outboard amps only to power your speakers and subs, id the RCA circuits still work
2. Replace the HU, after you know you have good speaker connections to each location
Swez
PS My guess, you have a short or loose wire connections from the HU harness to speaker harness. There may be a short in the right front speaker or a pinched wire, to that location. The Stock HU should have played fine otherwise, with the new 6x8's installed.
uochronos on 08/31/2003 16:01:22
OK i feel a little dumb never tried fading the speakers to front or back to see what speaker sounded blown on my stock deck turns out it was my rear passenger side not front. so no wonder replaceing my front one didnt make any since... teach me not to listen closer. but i have a new problem now i cant get the rear door pannel off of my 2003 ford ranger extended cab. so that i can get to the speaker... doesnt appear to be any screwes holding it on but i dont want to reaf on it to hard and brack it. does anyone know how to remove these it should be the same as a 2001 or 2002 model or similar. damn new cars and not haveing chiltons manuals out yet:)
compvr15s on 08/31/2003 20:11:19
do the rear windows, have a latch to open them up a few inches. if so you will have to take that off. my neighbor has a 97 f150 i know way different but im sure they use teh same process on all their vehicles. once you have that off i think there was a screw under tha latch, then the piece around the window pops off and the the lower section slides up. if your back side windows dont open then there has to be screws or christmas tree clips holding it in. try to pull one edge out a lil and see if you can look behind to see how its held in. good luck. and id say swez is prolly right, sounds like a pinched wire or sumting of the sort. repost once ya figure out how to get your panels out please, id like to know just for future reference.
ttocs on 09/1/2003 00:12:59
test the impedence first!! I am not familiar with the 2003's, but I know that some of them come with premuim sound systems. The strange noise me be caused by that....
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