CB radio help!

kent · 09-23-2007, 03:40 PM

I'm having an issue with my CB. Whenever I transmit, the engine shuts off. At first, I thought it may be a power issue. For testing purposes, I hooked the CB radio up directly to the battery. No power lines running through the cab as I had it sitting on the front bumper. Engine stalls out as soon as I push the transmit button. I've tried different CBs and different antennas with no success. I can receive just fine. Any one ever run into something like this? As a side note, this is not my first time installing a CB. I have another one set up in a different vehicle. The truck is a 98 Tacoma.

I have other 12 volt accessories running on the truck. I have an ARB air pump that runs fine and does not stall the truck. That should be pulling more power than a CB.

Thanks.

CJM · 09-23-2007, 04:18 PM

Shorting it out somewhere most likely. It grounded correctly?

KevinInSac · 09-23-2007, 05:44 PM

Could be radio noise traveling through the wires and interfering with the ECU. I think the Shack sells all sorts of goodies to eliminate radio noise.

kent · 09-23-2007, 06:44 PM

Quote:

Originally Posted by CJM

Shorting it out somewhere most likely. It grounded correctly?

But where? I took a CB and Wilson magnetic whip antenna from my other vehicle and set it up on the truck in question. The test CB was connected directly to the battery and sitting on the bumper. The Wilson magnetic antenna sitting 10 feet away. The only wires connected are the 12v wires from the CB to the battery.

CJM · 09-23-2007, 06:56 PM

Where is it grounded?

olharleyman · 09-23-2007, 07:24 PM

Quote:

Originally Posted by KevinInSac

Could be radio noise traveling through the wires and interfering with the ECU. I think the Shack sells all sorts of goodies to eliminate radio noise.

I think he's on to something here I ran my cb with a 600 watt liner and it shut down the ecu by power bleed over so check your coax sheilding replace it with a know good one and see what you get.

kent · 09-23-2007, 07:59 PM

Quote:

Originally Posted by CJM

Where is it grounded?

CB is grounded directly to the battery. Antenna is magnetic so there isn't a separate ground.

kent · 09-23-2007, 08:03 PM

Quote:

Originally Posted by olharleyman

I think he's on to something here I ran my cb with a 600 watt liner and it shut down the ecu by power bleed over so check your coax sheilding replace it with a know good one and see what you get.

Antenna coax is not anywhere near other wires. It is just laying on the floor and along side of the truck. Keep in mind this is antenna #2, CB radio #2. CB #1 and antenna #1 has been completly unplugged.

chrishf12 · 09-23-2007, 09:48 PM

Make sure the SWR is set. Each antenna has to be set for the radio.

You shouldnt have much problem with interference without a linear.

Just my 2 cents

Gator · 09-24-2007, 06:58 AM

I think the post regarding RF interference with your ECU is more likely the real problem here.

Have you tried swapping radios / antennas with your other set up?

If this doesn't fix the problem, you may want to talk to the guys at Radio Shack or some of the HAMM radio forums and see if they know of a fix for RF interference with normal ECU operation.

Out of curiosity, does the vehicle have a security system, or remote start system installed that operates via remote control?

kent · 09-24-2007, 08:31 AM

Quote:

Originally Posted by Mud_Puppy

I think the post regarding RF interference with your ECU is more likely the real problem here.

Have you tried swapping radios / antennas with your other set up?

Yes, I have tried swapping radios and antennas.

Quote:

Originally Posted by Mud_Puppy

Out of curiosity, does the vehicle have a security system, or remote start system installed that operates via remote control?

No remote start or alrams at all. I don't even have electric windows or doorlocks.

KevinInSac · 09-24-2007, 02:24 PM

I think this is it:

http://www.radioshack.com/product/in...t&tab=features

Probably put it in line on either the posi or neg, not too sure...

kent · 09-24-2007, 07:43 PM

Quote:

Originally Posted by KevinInSac

I think this is it:

http://www.radioshack.com/product/in...t&tab=features

Probably put it in line on either the posi or neg, not too sure...

Thanks. I'll try that and see if it helps.

KevinInSac · 09-24-2007, 08:05 PM

Quote:

Originally Posted by kent

Thanks. I'll try that and see if it helps.

Less than two bucks, dont have much to lose. Plus while you are there, you can pick the massive brain that the employee's there have too.

chrishf12 · 09-25-2007, 11:10 AM

My experience is that devices like linked above usually keep engine noise from coming through the radio! Not radio transmissions from the engine!

09-23-2007, 03:40 PM	#1 (permalink)
kent Registered User Join Date: Oct 2005 Location: AZ Posts: 50	CB radio help! I'm having an issue with my CB. Whenever I transmit, the engine shuts off. At first, I thought it may be a power issue. For testing purposes, I hooked the CB radio up directly to the battery. No power lines running through the cab as I had it sitting on the front bumper. Engine stalls out as soon as I push the transmit button. I've tried different CBs and different antennas with no success. I can receive just fine. Any one ever run into something like this? As a side note, this is not my first time installing a CB. I have another one set up in a different vehicle. The truck is a 98 Tacoma. I have other 12 volt accessories running on the truck. I have an ARB air pump that runs fine and does not stall the truck. That should be pulling more power than a CB. Thanks.

09-23-2007, 04:18 PM	#2 (permalink)
CJM Registered User Join Date: Aug 2006 Location: Central NJ Posts: 4,580	Shorting it out somewhere most likely. It grounded correctly? __________________ 96' T100 SR5 4x4, ISR mod, Custom ABS snorkel, KC 57's Hella optilux el cheapo backup lights. Cobra 19III CB, Firestick 4ft antenna, Bilstein shocks. Be polite. Be professional. But, have a plan to kill everyone you meet.

09-23-2007, 05:44 PM	#3 (permalink)
KevinInSac Registered User Join Date: Apr 2007 Location: Sacramento, CA (Carmichael) Posts: 1,034	Could be radio noise traveling through the wires and interfering with the ECU. I think the Shack sells all sorts of goodies to eliminate radio noise. __________________ 92 ExCab Pickup SR5 3.0 5spd 4X4 Pretty much stock. I've done some stuff though.

09-23-2007, 06:56 PM	#5 (permalink)
CJM Registered User Join Date: Aug 2006 Location: Central NJ Posts: 4,580	Where is it grounded? __________________ 96' T100 SR5 4x4, ISR mod, Custom ABS snorkel, KC 57's Hella optilux el cheapo backup lights. Cobra 19III CB, Firestick 4ft antenna, Bilstein shocks. Be polite. Be professional. But, have a plan to kill everyone you meet.

09-23-2007, 09:48 PM	#9 (permalink)
chrishf12 Registered User Join Date: Feb 2007 Location: North Carolina Posts: 192	Make sure the SWR is set. Each antenna has to be set for the radio. You shouldnt have much problem with interference without a linear. Just my 2 cents __________________ Chris 1990 4WD 22RE Pickup 5-speed 32x11.5 Trailmark A/Ts, 15x10 Mickey Thompson Classic II wheels Total 3 inch lift, 1.5 inch BJ Spacers, Tuff Country 3 inch Add-a-Leafs Custom Twister Exhaust, K&N filter with airbox mod Pioneer 6700 CD deck, Boss 300W Amp, Pioneer 6x9s in custom box Full Size General Lee CB Radio Ashtray Mod, Wilson 2000 Trucker antenna, Bugflector II & ventshades

09-24-2007, 06:58 AM	#10 (permalink)
Gator Registered User Join Date: Sep 2007 Location: Birmingham, AL. Posts: 232	I think the post regarding RF interference with your ECU is more likely the real problem here. Have you tried swapping radios / antennas with your other set up? If this doesn't fix the problem, you may want to talk to the guys at Radio Shack or some of the HAMM radio forums and see if they know of a fix for RF interference with normal ECU operation. Out of curiosity, does the vehicle have a security system, or remote start system installed that operates via remote control? __________________ Current Setup: 94 X-Cab 4x4 w/ 3.0, Auto, 1.5" BJS & Shackles, 33x12.5-15 BFG MT's, Detroit locker w/ 4.88 gears, ISR and Air Box mods. Future Mods: Armor, winch, 12v Air Compressor & tank. Lottery Mods: 4.3L w/ 4L60-E tranny swap, SAS w/ Detroit locker, Budbuilt Crossmember. Last edited by Gator : 09-24-2007 at 06:59 AM.

09-24-2007, 02:24 PM	#12 (permalink)
KevinInSac Registered User Join Date: Apr 2007 Location: Sacramento, CA (Carmichael) Posts: 1,034	I think this is it: http://www.radioshack.com/product/in...t&tab=features Probably put it in line on either the posi or neg, not too sure... __________________ 92 ExCab Pickup SR5 3.0 5spd 4X4 Pretty much stock. I've done some stuff though.

09-25-2007, 11:10 AM	#15 (permalink)
chrishf12 Registered User Join Date: Feb 2007 Location: North Carolina Posts: 192	My experience is that devices like linked above usually keep engine noise from coming through the radio! Not radio transmissions from the engine! __________________ Chris 1990 4WD 22RE Pickup 5-speed 32x11.5 Trailmark A/Ts, 15x10 Mickey Thompson Classic II wheels Total 3 inch lift, 1.5 inch BJ Spacers, Tuff Country 3 inch Add-a-Leafs Custom Twister Exhaust, K&N filter with airbox mod Pioneer 6700 CD deck, Boss 300W Amp, Pioneer 6x9s in custom box Full Size General Lee CB Radio Ashtray Mod, Wilson 2000 Trucker antenna, Bugflector II & ventshades

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