Amp stalls P/U truck
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Amp stalls P/U truck
hot wire ran to battery with big stereo amp fuse block with 2 30 amp fuses one fuse to amp and other fuse to CB (DX 959), ground wire ran to driver seat bolt.
wHILE VEHICLE IS RUNNING @ IDLE and I key up my truck will stumble and stall. Any suggestions?
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Re: Amp stalls P/U truck
Post by jessejamesdallas »
Also, I would run that ground wire to the frame...seat bolt is probably just connected to the body of the truck, and not the frame, which is not going to give you the best grounding point.
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Re: Amp stalls P/U truck
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Re: Amp stalls P/U truck
Post by jessejamesdallas »
probably has a stock 105 amp alternator...You can get a 200 amp direct replacement Delco... 145 amp would be a improvement... Need to shop on line tho, most auto part stores will only have the factory replacement alternators.njoutlaw wrote:Thanks JJD. I've been thinking of upgrading Alt..
92 Chevy Silverado 1500.
There's several listed on the auction site starting at $119 for a 200 amp that will fit your truck.
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Re: Amp stalls P/U truck
Post by dgbacb4148 »
David g...............
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Re: Amp stalls P/U truck
Post by MDYoungblood »
3's
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Re: Amp stalls P/U truck
If that doesn't work then you start looking elsewhere and maybe grounds trapping things like exhaust and bed.
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Re: Amp stalls P/U truck
Post by Scipio Kid »
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Re: Amp stalls P/U truck
at the moment I am shopping for a larger alt.
I am going to re ground the ground wire to frame or other suitable location other than seat bolt and possibly try the 9ft wire to amp case trick and hope for the best.
Amp clicks when I key up so its doing what it should but maybe like mentioned the ground isn't accurate enough.....
I will keep updates as I can, maybe someone else will be in the same/similar situation and my trial and error may help.
until then I'll be readn the mail.
Re: Amp stalls P/U truck
Post by Deleted User 14541 »
DRDX knows what's going on. Ideally an antenna would roof mounted on a large vehicle roof. Think of a suburban as best case scenario. That huge roof provides a massive counterpoise and there are rarely issues with RFI at most power levels. With a smaller roof or an antenna mounted in a compromised position the outer part of the coax shield is more likely to radiate. This is called common mode current and it basically brings RF into the vehicle where it can wreak havoc on anything electronic.
The 9 foot wire on the amp case can treat the symptom but the cure would be to use a better antenna mount or a common mode choke to force the return current to flow on the vehicle body instead of the coax shield. Putting the wire on the amp case is like taking a radial off a base antenna and bringing it inside. Even though it might make the system usable the efficiency will not be as good as it could be. If you put a radial anywhere attach it to the ground side of the antenna mount..think ground plane base antenna or dipole.
For a choke you can use the right mix of ferrite cores around the coax at the antenna feed point or wrap a choke. About 5 turns of coax around a 5 inch form should make a difference. Google "ugly balun" to see the choke. I prefer the ferrite but a choke works if done right and you have room for it.
The funny thing is that moving the negative cabke of the amplifier or changing the length of it can have the same effect at the 9 ft wire on the amp case. You may treat the symptom and think you solved the problem.
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Re: Amp stalls P/U truck
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Re: Amp stalls P/U truck
The other replies covered a lot... However, I don't think anyone mentioned Coax Quality and if it is run next to the Vehicle CPU.. Also, Antenna SWR & Coax runs can have a huge effect on vehicle RFI. I also agree with the other posters about your power output, 150 to 200 watts shouldn't kill a vehicle with a properly installed radio/amp and quality coax with a tuned antenna...njoutlaw wrote: ↑October 27th, 2016, 5:06 pm I have a 2 pill no name any where amp. Aluminum ( I think) box with fan on top, AM & SSB toggle with I'm guessing mod knob.
hot wire ran to battery with big stereo amp fuse block with 2 30 amp fuses one fuse to amp and other fuse to CB (DX 959), ground wire ran to driver seat bolt.
wHILE VEHICLE IS RUNNING @ IDLE and I key up my truck will stumble and stall. Any suggestions?
I hope you figure it out... Best of luck..
73,
Russ
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Re: Amp stalls P/U truck
Post by jessejamesdallas »
I agree a 2-pill shouldn't kill the truck...But if the battery's weak, alternator on it's last-leg, who knows...would like to know what he found out tho.
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Re: Amp stalls P/U truck
Post by Skyraker426 »
Good luck! RF is sneaky!
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Re: Amp stalls P/U truck
Post by MDYoungblood »
It's not really a computer but the HEI ignition has an electronic module that can be effected by RF, especially the cheap ones. Wonder if he ever figured it out.jessejamesdallas wrote: ↑November 30th, 2017, 4:46 pm Old post..But for those saying "RF" maybe getting into the computer of the truck... He said it was a 1992 Silverado...."no computer"
I agree a 2-pill shouldn't kill the truck...But if the battery's weak, alternator on it's last-leg, who knows...would like to know what he found out tho.
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Re: Amp stalls P/U truck
Post by jessejamesdallas »
Good question...Think we need a new rule that once you figure out what solved the problem to your question, you have to post the answer or be banned for life from asking anymore questions...MDYoungblood wrote: ↑January 13th, 2018, 11:32 amIt's not really a computer but the HEI ignition has an electronic module that can be effected by RF, especially the cheap ones. Wonder if he ever figured it out.jessejamesdallas wrote: ↑November 30th, 2017, 4:46 pm Old post..But for those saying "RF" maybe getting into the computer of the truck... He said it was a 1992 Silverado...."no computer"
I agree a 2-pill shouldn't kill the truck...But if the battery's weak, alternator on it's last-leg, who knows...would like to know what he found out tho.
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Re: Amp stalls P/U truck
I once worked on a car that had rough running issues when i would test drive it nothing would happen. When the car came back the radio was on and the car was running badly i turned off the radio and it ran fine. The louder you turned up the volume it would draw more power and the worse the car ran. It was an after market radio and and tapped into the fuel injection power wire.
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Re: Amp stalls P/U truck
Post by 295 antenna »
I believe in the first post he says (straight to the battery?) or did i read that wrong ?redlght wrote: ↑January 14th, 2018, 1:45 am Where is the amp tapped into for power?
I once worked on a car that had rough running issues when i would test drive it nothing would happen. When the car came back the radio was on and the car was running badly i turned off the radio and it ran fine. The louder you turned up the volume it would draw more power and the worse the car ran. It was an after market radio and and tapped into the fuel injection power wire.
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