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| Author | Topic: ASD Fuse |
MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 09-27-2008 09:46 AM
    
The 20-amp ASD fuse under my hood blows & shuts down the car. This was happening about 18 months ago, but stopped after I replaced the battery. It's now happening again. Has anyone dealt with this problem and more importantly, does anyone have a solution? |
392HEMI   POA Site Supporter Prowler Junkie From:The Villages, Fl. |
posted 09-27-2008 11:08 AM
The ASD (Automatic Shutdown Relay) reads input from all 4 O2 sensor's, both up stream and down stream sensors and their ground wire. The upstream units are grounded to the underbody and the left downstream is grounded to lower left of engine and right to lower right side of engine. I would start with a check of each ground wire and think you may locate a problem there. See if "Check Engine" light comes on, in whicch case it could be an O2 sensor. Good luck. |
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MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 09-28-2008 11:42 AM
Any chance you have any photos of the O2 sensors & where they're located in the car? |
catfish             POA Site Supporter Prowler Junkie From:scottsdale,az,usa |
posted 09-28-2008 11:47 AM
as 392 says,sounds like a wire problem.a bad or worn out part won't blow a fuse,normally.let us know what you find. ------------------ |
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392HEMI POA Site Supporter Prowler Junkie From:The Villages, Fl. |
posted 09-28-2008 12:23 PM
The "upstream" sensors are located on the exhaust, in front of the cat converter and the "downstream" are just aft of the cat converter. It is possible that a wire problem caused the ASD Relay to malfunction thus blowing the fuse. Those relays, upstream and downstream are in the underhood black box that houses the fuse, left side of engine bay with big red + on it. Good luck. |
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catfish POA Site Supporter Prowler Junkie From:scottsdale,az,usa |
posted 09-28-2008 12:45 PM
if it was a bad 02 sensor,your service engine lite would be on and it would set a code.no lite ,no code no sensor.you might want to also ck.the sensors wires and connectors to make sure there not touching exhaust some where.somethiung is causing it to blow a fuse. ------------------ |
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MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 09-28-2008 01:19 PM
Replaced the fuse & now the check engine light is on, car runs rough & then stalls, but fuse isn't blown. Any ideas??? |
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catfish POA Site Supporter Prowler Junkie From:scottsdale,az,usa |
posted 09-28-2008 02:33 PM
looks like it set a code.you need to hookup a scanner to retrive code to see whats wrong.if you dont have one,call around to local auto parts store to see who does,or go to a dealer who will charge you.dont forget to ck, the wiring.it blew a fuse for a reason. ------------------ |
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MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 10-10-2008 05:16 PM
Just able to get a mobile guy out here & the codes set are P0340 & P1391 which I was told are Cam Sensor A & B. Has anyone dealt with these codes & had problems here? Could these sensors have also caused my ASD fuse to snap? |
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catfish POA Site Supporter Prowler Junkie From:scottsdale,az,usa |
posted 10-10-2008 06:40 PM
po340 is a camshaft position sensor circut malfunction.could be cam sensor,theres only 1.--code 1391 is a intermittent loss of cmp or ckp- its a cam position and crank position.manual says 0340 is no cam signal at pcm.id replace cam sensor and see if it solves the problem,why its blowing the fuse,could be the sensor.the sensor is at the top rt frt,under plenum.look to rt of upper rad hose and you will see it.change yourself or take to dealer.pm me if you have questions.ive changed mine,but only for preventative maintenance.sensor is shaped like a upsidedown -l-.sensor part # is-4609086.i do believe that you can replace cam sensor w/o removing plenum.if not and you have to partially remove plenum,jmo,id replace all sensors under plenum. ------------------ This message has been edited by catfish on 10-10-2008 at 06:56 PM |
dpena POA Site Supporter Administrating Kat Visit Dan's Prowler Excitement Personal ScrapBook From:San Jose Ca Santa Clara |
posted 10-11-2008 01:26 AM
quote: Upstream O2 sensor
O2 Sensor Part Number[b]
My ex-prowler was backfiring something aweful after I did a dyno run. The codes it threw were "Mis Fire" and "Vacuum Leak" error. This is not related to your issue but in the end it was a loose connection that probably happened back when I had my supercharger installed and this connection was never fully inserted. Here is the link of that eventful month: http://www.prowlerexcitement.com/DynoPhenomena/ulthm.htm Notes from my Tech: [b]RAN COMPUTER SCAN AND VERIFIED ENGINE MISFIRE AT #6 CYLINDER- TRACED SYSTEM AND FOUND COIL #6 DRIVER WIRES NOT SEATED INTO PCM BOARD. REPAIRED CONNECTION AND REPLACED FOULED OUT #6 SPARK PLUG. RECHECKED AND SYSTEM OPERATION NORMAL AFTER REPAIR
The problem may be the alternator. See if replacing the alternator resolves your issue. 1. Charge up the battery. Note: The voltage regulator is transmitting stray AC voltage that might be getting picked up by the cam sensor or the PCM and throwing the whole system off. Do the test in daylight with no loads on...
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MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 10-11-2008 03:34 PM
Replaced the camshaft sensor ($45 at Autozone). Extremely difficult to get the old one out without taking apart the upper engine but finally got it. Reconnected the battery. No codes so far. Drove it about 5 miles without problems. I'll take it out next week for an extended drive & keep you informed. Thanks for your responses |
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MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 04-18-2009 03:14 PM
Well about 6 months after I replaced the camshaft sensor the car just broke down again with the same code. Barely got it home. Any suggestions? |
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catfish POA Site Supporter Prowler Junkie From:scottsdale,az,usa |
posted 04-18-2009 11:13 PM
id replace the sensor again and see what happens.if problem goes away,i would next ck.the wires to the sensor.track them down in the loom,see if any cut or squashed.if this sensor is the one at the frt of the engine,its a tight fit.you do not have to remove complete plenum to change it.remove plenun bolts,and gently lift plenum enough for more clearence to remove sensor.replace it and torque plenum in place.it has silicone gasket.it will not leak,at least mine didnt.report back on outcome.its kind of unusual for that sensor to fail twice. ------------------ |
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MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 04-19-2009 10:28 AM
What do you think about the Tone Wheel on the Camgear issue posted by cplabaunza? |
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catfish POA Site Supporter Prowler Junkie From:scottsdale,az,usa |
posted 04-19-2009 08:56 PM
even w/the sensor changed,if it was a tone wheel,i think it would run like crap from the get go.sounds like you may have to take to a dealer to get diagnoised.there scanners are much more comprehesive than the cheap ones.did you ever call marvin gohl.the 0340 code ,says no camshaft signal at pcm and no camshaft signal detected during cranking. ------------------ This message has been edited by catfish on 04-19-2009 at 09:39 PM |
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MCopeland Prowler Enthusiast From:El Cajon, CA |
posted 05-06-2009 09:51 PM
See my latest crackshaft sensor post for the resolution. |
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