My sc3 (auto) is having a little bit of problems right now. The speedo started to go crazy on me and just flickers back and forth really really fast. (from like 50 to 140 mph) Then once it starts doing that the car starts to feel as if it is going to stall if you keep it in drive. Does anyone know whats the deal with my car? Thanks for any advice or suggestions.

 

I don't know about SC's but on most cars a changing speedo is the VSS ( Vehicle Speed Sensor). You may want to search that and see what you come up with.

I am sure someone else can chime in,

Jonny

 

But with his car jerking and such, it sounds more like a bad ground on the computer.

 

Do you think a grounding kit would do the job?

 

Not unless you plan on using it inside the faulty computer.

(no, that wil not help).

The computer is my guess, but you REALLY need to pay for a diagnostics on the machine. You always come out cheaper that way with problems like THIS one.

 

I Installed a $100 grounding kit made specifically for the SC and I didn't notice any difference.

Jonny

 

I made a grounding kit for ~$8 and didnt notice anything either (well my lights dont dim as much when the bass hits). As for your problem, when my alternator had fried but I was still driving my car on battery power, my cluster started to go CRAZY right before my car died. Whenever I hit the brakes or used the blinkers, everything would start goin up and down just like your problem. So it has somethin to do with not getting enough power/ground

 

Well, my problem is just a little different. If I park it outside and the engine is cool, then it works fine for like the first couple minutes then it starts going crazy. it doesnt do anything when i use my blinkers or anything like that, but mainly when you floor it. When the speedo starts to filicker like mad, the tranny begins to like start in the wrong gears and hesitate shifting. Is this still the same problem or should i just go and get a diagnostic?? (Thanks for all of the suggestions and help)

 

Hey man,

It seems like you may have more than one issue here - but a bad ground I would say would be your first culprit. Putting on a grounding kit won't necessarily help because you may not have a new ground installed on where the problem lies.

I would say your best bet is to bite it and bring it in for diagnostics - then report your finding here and we can see if we can help you go from there with what they tell you.

Good luck,
Jonny

 

Aight thanx everybody for your suggestions and advice....I'm gonna bring it for a full diag (60 bucks ) but i'll do anything to save my baby. I just hope its not too late.