1. Home
  2. Hyundai Cars and SUV Forum
  3. 99 Sonata ABS and TCS lights are on.

99 Sonata ABS and TCS lights are on.

Hello,

A few months ago, my check engine light came on. The ABS and TCS also came on. I took it down to AutoZone and they ran a code on it. It came back saying that there was an issue with the speed sensor. The car would start hesitating around 5000 rpms and not accelerate properly. If I put the car in neutral, I could red line the vehicle if I wanted to.

Long story short, I ended up replacing the input and output speed sensors. The check engine went off, but the ABS and TCS lights stayed on. The vehicle did not hesitate at 5K.

A couple of days later the check engine light came back on, and the hesitation returned. I disconnected the battery and then reconnected, the check enginge light went off and no hesitation.

Does anyone have any clue what is going on here? Help would be much appreciated!

-Cameron

-- Message posted using

formatting link
information at
formatting link

Reply to
schwartzcy
Loading thread data ...

Presuming it's a V6, it's could be an issue with the vehicle speed sensor, at the right front whee. But without actual trouble codes (and knowing whether it's a four cylinder or V6), there's no actual way to do much more than guess. At this point, I'd recommend having a look at the tone wheel on the right axle. If you see nothing, wait until the lamps resurface, have the codes checked, and report the actual code numbers.

-- Message posted using

formatting link
information at
formatting link

Reply to
hyundaitech

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.