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One time a car came into my auto shop for a check engine light. We were checking out the system on it. It was a ford expidition or one of those big suvs. It had tweeters mounted above the seatbelts on the sides. SO that you had screaming highs 2 inches from your ears. ANd then 2 more tweeters on the doors. Also 2 12 inch subs and some amps and 2 capacitors. What really got me was the deck was the factory deck. System sounded like crap to me.
When we pulled the engine codes it had 10. I was like wtf. ANd none of them were really related. SO i followed all the diagnostic flow charts and it said everything i tested was okay. Only thing left could be the electrical harness to the sensors. So i assumed the dumbasses who did this install may have taped into the wrong power source. Well turns out the main fuse that was screwed into this plastic cover on the firewall near the battery. Was the plastic cover for the main wiring harness to the computer. ANd the screws went in and pierced all the wiring. We repaired them and cleared the codes and they immediately came back on. So looks like the computer was damaged. The thing that got me is later on he said he was driving the car with the engine light for a year. ANd the light came on right after the stereo was installed too. I wish he told me this in the very begining.
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12-16-2008, 10:41 PM
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