Need HELP! Took Battery out overnight, Rough Idle and NO GAS pedal repsonse! - Lexus IS Forum
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post #1 of 6 (permalink) Old 09-09-2018, 06:40 PM Thread Starter
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Need HELP! Took Battery out overnight, Rough Idle and NO GAS pedal repsonse!

Hello, I was installing a new sound system to the stock head unit with an amp and a subwoofer. Put the battery back in and now the car idled at 250rpm, revved the gas +75% and then the rpms rose to 2,000rpm then to around 1500rpm. UNPLUGGGED THE POWER CABLE to the new sound system and the problem persists. Tried to take it out of the driveway a little then pulled up and the pushed the gas then the car lunged heavy forward. Radio works, lights works, car before started fine. Sometimes the car will die if the rpms fall below 250rpm. Please HELP! Smelly gas smell from exhaust fumes.
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post #2 of 6 (permalink) Old 09-09-2018, 07:11 PM Thread Starter
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Just took it out for a spin, the gas pedal is responsive once it is pushed down 85% then when I let off the gas, the speedometer and speed stick at whatever the speed was pushed to. But when I brake the RPMs fall back to 1500. AND WHEN I TAKE OFF, THE REAR DIFF FEELS LIKE IT SLIPS.
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post #3 of 6 (permalink) Old 09-10-2018, 02:28 PM
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Taking the battery out like that would reset the ECU and everything on the car. Sounds like it will take a while to get back to normal again.
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post #4 of 6 (permalink) Old 09-13-2018, 04:48 PM Thread Starter
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Taking the battery out like that would reset the ECU and everything on the car. Sounds like it will take a while to get back to normal again.
alright, thanks for the response. Would it be possible for me to take my car to my mechanic/import specialist/dealership to set the fuel trim data?
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post #5 of 6 (permalink) Old 09-13-2018, 07:36 PM
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Disconnect the negative cable and go turn the key on and back off and hit the brake pedlel once then hook the negative cable back up with the key off and out of the ignition and then start the car but do not rev it up Just let it idle. If it stalls start it again. Eventually it will idle on its own. Give it a few minutes idle time and all should be good.
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post #6 of 6 (permalink) Old 09-14-2018, 02:16 PM
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Quote:
Originally Posted by eazy300 View Post
alright, thanks for the response. Would it be possible for me to take my car to my mechanic/import specialist/dealership to set the fuel trim data?
Not that I know of, all you can do is just drive it
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