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Worrying Problem.

Bass Junky

By Bass Junky,
in Engines & Forced Induction

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Bass Junky Grand Master

Bass Junky

Posted
Posted

Hey ppls

Well, because there was no interest in the meet last night I decided to reset my engine computer.

I pulled the positive lead off the battery (whilst the alarm went insane) and pumped the brake, turned on the lights etc etc.

Put the lead back on, let car sit for a while, then started it, let it idle and drove off to teach the thing a lesson or two!

Anyway, warmed it up and drove onto the Eastern Freeway from Springvale road, and opened up third gear.

Engine running fine, but when I reached 110, the steering wheel began to turn to the left, whilst the car stayed straight. going through to 130 odd, the wheel got further around until I backed off, and the wheel returned to straight by the time I reached 100 again.

I tried this again a couple of times with the same result.

This worried me somewhat! I was going along the freeway, obviously rear wheel steering. I gave it a couple of swerves and accelerated again to see if I could identify anything mechanically that was flopping about, but the same gradual turn of the wheel from about 100 to 130 (as fast as I wanted to considering).

Has this happened to anybody else, and what was it?

On the drive to work this morning (4 minutes) I couldn't really get the speed up to see if it was still happening.

Please help......

BASS OUT

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JimX Grand Master

JimX

Posted
Posted

Wow, it doesn't know how fast you're going so it decides to steer at random intervals! Nice safety measure there Nissan! :D

The first thing I would do is check the wiring loom connection to the ECU in the kick panel and also the connection to the HICAS controller under the rear parcel shelf. Maybe one of them is a bit loose and not making full contact.

I don't think it's related to your d/c of the battery though, it sounds like coincidence.

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Bass Junky Grand Master

Bass Junky

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I did the full diags thing, steering wheel and brake pedal and then back and forwards for 5 meters or so.

Then yeah, I sat there stopped whilst the rear wheels squirmed from side to side for a while.

Should I have been moving? Cos if I was I would be rear wheels steering up the road.....

BASS OOUT

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09ONE_32 Collaborator

09ONE_32

Posted
Posted

Now this is just a thought but, when u did reset the cpu were the front wheels straight and aligned? Because I heard some thing about the HICAS caliberating at around 100-130? so it could be off because of the difference in the angles of the wheels front to back. Just a thought really

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Bass Junky Grand Master

Bass Junky

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Well, it's interested that you said that, because I did actually reset the computer when the wheels were turned into my garage (whilst the car was in the drive)

I will reset the computer again now, and gauge the effect when I drive down the freeway again tonight.

Good Thought

BASS OUT

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