Cruise control - normal?

[jtmann]

Re: 2007 Camry LE

When I have cruise on and I am on a relatively flat road (ie no upward or downward hills), the cruise stays at target/set speed.

When I have cruise on and I am going up a hill the engine revs way up and the speed goes significantly beyond the target/set speed and stays higher than target for significant time before it falls back to target/set speed.

I thought cruise was supposed to keep it at target/set speed no matter what the conditions? Is the above normal?

Thanks

[RickF]

No, that doesn't sound normal to me. The speed shouldn't go above your set speed.

On my Camry's, ('09 and '05) when I come to a hill the car may have to drop to a lower gear (RPMs will go up) in attempts to maintain the set speed, but it never goes faster than I've set the cruise for (when going up hill like your post reads). If it's a steep downhill, it's possible to go beyond the set speed.

My '09 does it better than the '05 Camry. The '09 only drops one gear, but the '05 seems to drop down to 3rd causing RPM's to jump up considerably.

[workerant]

I've learn not to set cruise when going up hill. It'll rev. It does sound normal to me. It rev passing set speed and slowly slows to the set speed.

Anyway, cruise is not good when it come to hill. U'll be wasting more gas than it's worth.

[PRINCESS PEACH]

normal.

[MJZ]

Cruise will generally prevent you from going below the your set speed, but it WILL go beyond it easily.

Since I have 6 gears and a V6, my Cruise probably behaves differently from yours. If I set it to 60mph, and then start sliding down hill, the car will ramp up to 65-70mph. If I start going up hill, it will just increase revs slowly (stays in 6th gear) and maintain 60mph.

[GT-R]

It's just trying to balance the speed. It's impossible to stay at exactly 60 when going uphill or downhill, even your foot can't do that.

As long as it comes back to the set speed once you're back on a flat road, you're ok, but if it keeps going past 100, then you got a problem.

[workerant]

Originally Posted by MJZ

If I set it to 60mph, and then start sliding down hill, the car will ramp up to 65-70mph. If I start going up hill, it will just increase revs slowly (stays in 6th gear) and maintain 60mph.

Your Cruise doesn't back off the gas paddle? Unless it's a steep hill than the Cruise just let go of the gas paddle completely, the cruise have no control on the brake and gravity take over. And if you want the car to go even faster, put it in neutral.

[MJZ]

Originally Posted by workerant

Your Cruise doesn't back off the gas paddle? Unless it's a steep hill than the Cruise just let go of the gas paddle completely, the cruise have no control on the brake and gravity take over. And if you want the car to go even faster, put it in neutral.

It backs off the throttle but not enough, the car always goes a few mph faster when going down hill.

[Pawel062]

it's normal. though if it has a mind of its own then u know theres a problem. lol to the 100+ comment.

[workerant]

^ "Officer, it wasn't me.. it was my car wanted to speed." I don't think that'll work.

[Netforcer]

Originally Posted by GT-R

It's just trying to balance the speed. It's impossible to stay at exactly 60 when going uphill or downhill, even your foot can't do that.

As long as it comes back to the set speed once you're back on a flat road, you're ok, but if it keeps going past 100, then you got a problem.

+1
Normal... it'll overshoot because of the revving and return back to the set speed.

But try not to use cruise when you're in a hilly area... that's how you waste gas... since the engine constantly over revs and engine brake

[njerald]

Mine stays close to the set speed and doesn't overshoot by more than 1 mph.

It works no different than trying to maintain the set speed w/o cruise control.