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I have a 1999 Pontiac Sunfire. Transmission is going out I think. When I put it into reverse it's sometimes goes into reverse and sometimes doesn't but I hear a loud knock. fluid is right and not burnt. When put into neutral it goes nowhere , but engine feels like its under load. I have to shift into 1st then to reverse and give it a little gas and then it will go into reverse with a loud knock. This is an automatic 3 speed. Thanks

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Putting it into a gear and hearing a knock indicates that the engine mounts or transmission mounts are broken
naturally if you put it in neutral it will not move as that what neutral is
perhaps the neutral position needs adjusting as it may still be in drive
have the fault codes read to determine any sensor/servo/solenoid faults before spending big money on a transmission

Posted on Jun 29, 2017

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SOURCE: check engine light came on today honda accord

Take your car to a mechanic or your local auto parts superstore and have them read/scan the codes for the reason for the check engine light. A good place to start.

Posted on Apr 01, 2010

SOURCE: I have a 1999 Pontiac

Either a worn CV Joint or trans issue. Need more discription. Are you able to drive it, and does it shift okey?

Posted on Sep 04, 2010

SOURCE: transmission won't shift out of 1st and service engine light comes on. goes in reverse and park. goes in drive , just will not shift.

Hi Cindy, As the engine check light is coming it is indicating a problem. Have a diagnostic scan carried out and let your technician determine the actual fault. It could be something to do with the state of engine tune or a defective speed sensor, but may also be a problem with the gearbox. Regards John

Posted on Sep 09, 2012

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