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Old May 28th, 2005, 11:20 PM   #1
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in need of desperate help.....

i just got my jpipe installed on my 7th gen AV6 coupe today with a single exhaust and the sound is great.... the car seemed normal for the first few hours and then all of a sudden as i was driving home on the freeway, my car felt as if it choked... and my car was going nuts. the malfunction engine light came on and my car didnt shift.... i was so scared.... luckily i made it back home but at really low speeds...... i couldnt accelerate.... i thot it was just the ecu going whacko so i reset it by disconnecting the battery for 10 mins......... then i reconnected it and turned on the ignition and let it stay idle for 10-15 mins. after that i shifted to reverse and tried to back out of my garage but it wasnt respondin.... i couldnt back out!!!! i was kinda terrifed at this point.... so i shifted back to park and turned off the ignition and tried again. It worked this time i was able to reverse.. so i took the car for a spin around the neighborhood and it seemed normal again. the engine light was off. so i kinda accelerated all the way up to 5000 rpm and den the engine light came on and it choked again. i tested again if i was able to reverse but ti didnt work!!!!!!!! so i went back and tried to reset the ecu again... but it still didnt work... can someone help me please???????????????

this never happend before!! only since the time i installed my aem v2 intake, but resetting the ecu solved this problem.... what can i do? im gonna call the auto shop tommorow but do you guys kno anything about this?
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Old May 28th, 2005, 11:53 PM   #2
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That is scary. I've heard of that before with the v2, i've read that its the o2 sensor malfunctioning, never heard of choking before though.
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Old May 29th, 2005, 01:39 AM   #3
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If you look at it logically, there are only a few things that could have gone wrong.
1. Mechanic did something with the exhaust that caused a restriction.- A non-mandrel bent pipe? too small diameter, leaving a shop rag in the piping???
2. Mechanic did something with the rest of the car.- Cut a harnes while welding, nicked a wire causing a short?
3. The ECU doesn't like the change.-This is the most likely. If all you did was change from a factory to a custom pipe, I wouldn't think you would be having this much trouble though? I know with the GM cars, if the O2 was put into a non factory location, or if you had to extend the wiring to move it, it required other modifications. Is yours in the factory location?? Also, I am assuming that you didn't remove any of the cats or O2's, because that would certainly affect the ecu. You might also want to check if the front and back O2's are the same part #, maybe they were mixed up??

Hope that helps, keep us posted.
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Old May 30th, 2005, 07:41 AM   #4
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Old May 30th, 2005, 08:38 AM   #5
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let's help the guy a bit.. no more pointless jokes please..

1. did you replace the two cats with o2 sensor?
2. did you replace the cat that is after the j-pipe?
3. were there any shifting problems before j-pipe was installed?
4. could you take a look under the car to see if there are any leaking, etc?
5. take a pix of the j-pipe install, and the surrounding area would help..
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Old May 30th, 2005, 09:53 AM   #6
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i think i know what might be wrong. your transmission might be going bad. i remember i was driving on highway at 70mph then all of a sudden car just jerked and went from 70 down to 50 in a split second. i quickly exited off and checked everything out. turned car off and back on. car wouldn't go over 50 and the rpms were way up like around 5 or 6. had the car towed to honda. told me it was transimission problem, had good will assistance and only paid 100 bux for everything. originally they said it was gonna cost 3800 for new transmission, but i called h.o.a. and opened a case. they quickly helped me out. btw i have an auto.
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Old June 1st, 2005, 01:53 PM   #7
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its a good thing you changed your transmission fluid. you gotta maintain your car man!
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