brrymnvette

I just put a new steering rack on my car about a month ago and ever since, the steering has been extremely sensitive at higher speeds. Am I just imagining things, or is it supposed to be this way?

Jewjenk

Rack and pinion, twitch and you are in a ditch,

Also check tire pressures, if above 30lbs, will effect steering response. Did you take off the air dam? Front end could be lifting causing light front end at high speeds = quick steering.............

BigGun

Are you sure you hooked up the magnasteer connection when changed the rack? Check your codes using the dic. Interesting post by Bill Dearborn in this thread.
"When there is no electrical input to the Magnasteer it will default to a higher boost steering setting so the steering can be turned when parking the car. How did you check the codes? Using the DIC or using an OBD scanner. The codes are ABS codes since Magnasteer gets its inputs from the EBCM so you need to use the DIC or a scanner that can read ABS codes."

http://forums.corvetteforum.com/c5-t...r-failing.html

brrymnvette

I checked the codes with a scanner. But I didn't check any ABS codes. I'll do that and see what I find. Thanks, that's the type of info I was looking for.

And yes, I did plug back in the connection. I actually did it a couple times now thinking that may have been my problem.

Ultra_Miner

Don't know, but when I bought mine a couple months ago, I drove it 1400 miles from Vegas and the front end seemed touchy, skitish. I got a front alingment and she's solid as a rock now. Night and day difference.

brrymnvette

Yeah, I thought about that too, but I've had it on the rack 5 times to check, and recheck, and recheck.

BigGun

[QUOTE=brrymnvette;1580544402]I checked the codes with a scanner. But I didn't check any ABS codes. I'll do that and see what I find. Thanks, that's the type of info I was looking for.

The best scanner to use is the one that came with the car. It will display all the codes. Here's how: http://www.c5forum.com/ayc/dtcdic.php

PhilsFRC

Check ALIGNMENT. Among other things, close to "0" toe will cause this type of symptom (darting).

LoneStarFRC

I'm thinking not enough Caster. The caster should be in the 6.5* to 7.5* range.

PhilsFRC

That too. He needs a good four wheel alignment and I would bet his issues go away.

leadfoot4

True, but the OP changed the rack, which, I believe, does not require removal of the lower a-arms, therefore, the caster shouldn't have changed.

LoneStarFRC

I thought of that very thing too, but he never said what all was removed, dismantled, or replaced in addition to just the rack.

Either way, I agree with PFRC, he at least needs a good 4-wheel alignment for starters.

brrymnvette

I just got back from the shop. I tested the entire system and it's the VES sensor. Guess I'm pulling the rack back out and trying to get it replaced under the warranty from the vendor.

Alignment has been done boys, I know it's spot on b/c I did it myself. One of the benefits of having a fully equiped repair shop at my disposal.

SaberD

post your alignment measurements.

brrymnvette

They are the factory Z06 alignment specs. Nothing special. If you really want, I can go hook the alignment rack back up this week and take a picture of the readings, just to satisfy your curiosity.

$$$frumnuttin'

when I ran a Z06 alignment my car WAS darty...recently went back to the standard coupe alignment specs and the car is quieted down...I like it a lot better, a lot more confidence now behind the wheel.