Eliminating AM Radio Static

Johnny Sokko · Apr 26th, 2020, 19:31

Hello, I've been having a problem with my AM band having crackly static when the engine is running (it does not happen when the engine is off and the radio is powered on in the accessory position). Using a hand held portable AM radio, I think I've identified the problem as the computer module in the engine compartment, as the static noise comes in loud and clear when I hold the portable AM radio near to it.

All other possibilities (radio ground, antenna ground, etc) have been checked.

Would any electrical expert here know if a noise suppressor would be the proper remedy for eliminating the static, and what sort/brand of suppressor I should purchase?

Thanks-

Whyman · Apr 26th, 2020, 22:01

Back in the day I have fitted a suppressor to the power feed to the offending unit.

I micro farad usually does it. Google radio interference suppressor.

c1800 · Apr 27th, 2020, 05:37

Quote:

Originally Posted by Johnny Sokko

Hello, I've been having a problem with my AM band having crackly static when the engine is running (it does not happen when the engine is off and the radio is powered on in the accessory position). Using a hand held portable AM radio, I think I've identified the problem as the computer module in the engine compartment, as the static noise comes in loud and clear when I hold the portable AM radio near to it.

All other possibilities (radio ground, antenna ground, etc) have been checked.

Would any electrical expert here know if a noise suppressor would be the proper remedy for eliminating the static, and what sort/brand of suppressor I should purchase?

Thanks-

You listen to AM?

Johnny Sokko · Apr 30th, 2020, 03:20

Quote:

Originally Posted by c1800

You listen to AM?

Yeah, I'm a bit of a dinosaur. I like talk radio on my morning commute.

dingov70 · Apr 30th, 2020, 09:51

First thing would be to provide a ground wire from the body to the ECU metal case . DO NOT drill ECU , try & use existing screw/ fastener on ECU . Clean off any corrosion on ECU & body earth and fit earth lead .

I would not attempt to fit anything else to ECU as you may well destroy the ECU or cause untold running issues due to erroneous readings

Apr 26th, 2020, 19:31	#1
Johnny Sokko New Member Last Online: Apr 30th, 2020 03:20 Join Date: Dec 2017 Location: Southern California	Eliminating AM Radio Static Hello, I've been having a problem with my AM band having crackly static when the engine is running (it does not happen when the engine is off and the radio is powered on in the accessory position). Using a hand held portable AM radio, I think I've identified the problem as the computer module in the engine compartment, as the static noise comes in loud and clear when I hold the portable AM radio near to it. All other possibilities (radio ground, antenna ground, etc) have been checked. Would any electrical expert here know if a noise suppressor would be the proper remedy for eliminating the static, and what sort/brand of suppressor I should purchase? Thanks-

Apr 26th, 2020, 22:01	#2
Whyman Premier Member Last Online: Today 16:13 Join Date: Nov 2013 Location: Newark	Back in the day I have fitted a suppressor to the power feed to the offending unit. I micro farad usually does it. Google radio interference suppressor. __________________ XC60 2013 D5 215 SE Lux Nav geartronic

Apr 30th, 2020, 09:51	#5
dingov70 Master Member Last Online: May 1st, 2024 06:42 Join Date: Jan 2015 Location: Blackpool	First thing would be to provide a ground wire from the body to the ECU metal case . DO NOT drill ECU , try & use existing screw/ fastener on ECU . Clean off any corrosion on ECU & body earth and fit earth lead . I would not attempt to fit anything else to ECU as you may well destroy the ECU or cause untold running issues due to erroneous readings __________________ To stupidity & beyond

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