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05-14-2011, 12:21 AM
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2005 Ford Mustang Trouble Codes: P0158, P0138, and P0689
Ok so today my car was being weird and would have a delayed start up after i put the key to the on position, about a second or two of a delay and then it would start up. At one time i tried it didn't even start, and then on my way home i see the speedometer jumping up and down. I looked at codes and they were P0158, P0138, and P0689. what can this be? it says something about low voltage to the ecm but it can be anything. I also dont have cats on my car so that could be the other two codes but they have not been on til now and ive been catless for a while. thanks
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05-14-2011, 06:34 AM
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first two codes are self-inflicted from no cats. 3rd code is a tough one, here is some reading material
http://forums.themustangsource.com/f...alling-473785/
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05-14-2011, 08:24 AM
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alternator or battery most likely
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Seriously what the hell else do i need?
Last edited by GT800; 05-14-2011 at 08:24 AM .
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05-14-2011, 08:32 AM
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does anyone think it can be a fuse or ecm relay?
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05-14-2011, 09:22 AM
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fuses are easy to check, pull them out and inspect them. couldn't hurt and doesn't take long at all
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Edelbrock E-Force Supercharger, California Dream Hood, Qwik Latch Flush hood pins, Roush Front Fascia, MRT Two-Toned light Bar, Airburushed True Fire Flames (Blue), J&M LCA's, BMR UCA, BMR Adj Panhard, FRPP P Springs, 2010 GT500 Wheels 255/285, Brembo Brakes, Pype Bombs, Pypes X, GT500 Swaybars, Clear Corners, 35% Tints, HID's, 3D Carbon Side Scoops 2012 Race Red Ford Focus SEL Hatchback 100% stock, loaded with options
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05-14-2011, 10:06 AM
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Figured it out! Loose sensor on pc of car
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05-14-2011, 10:08 AM
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thats great glad you found the problem
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Eddie ITC CREW
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05-14-2011, 11:50 AM
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that'll do it for sure.
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Edelbrock E-Force Supercharger, California Dream Hood, Qwik Latch Flush hood pins, Roush Front Fascia, MRT Two-Toned light Bar, Airburushed True Fire Flames (Blue), J&M LCA's, BMR UCA, BMR Adj Panhard, FRPP P Springs, 2010 GT500 Wheels 255/285, Brembo Brakes, Pype Bombs, Pypes X, GT500 Swaybars, Clear Corners, 35% Tints, HID's, 3D Carbon Side Scoops 2012 Race Red Ford Focus SEL Hatchback 100% stock, loaded with options
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05-14-2011, 11:52 AM
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I was goin crazy haha
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2005 Ford Mustang Trouble Codes: P0158, P0138, and P0689
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