Gas Oven doesn't work under 450 degrees

normal operation is to push the oven knob in and turn
pushing in sets the igniter off and turning opens the gas flow to ignite
always light an oven with the oven door open
stop s an explosion if there is a problem
down load an operators manual bu going google and typing in --- user manual for ( make and model ) gas stove --- find a pdf version and download it

Most ovens have BAKE, BROIL and yours might have CONVECTION. Turn each on independently. If all don't work its one problem if only one doesn't its another
Also is it the gas doesn't ignite or it ignites then no temp change (or electric gets to xx degrees but doesn't get hotter?

Most likely culprit is the igniter.
When you turn the oven on it opens a gas valve allowing a small amount of gas to flow thru the pilot light. The igniter then lights the pilot and when the sensor determines the pilot is lit it opens th emain gas valve and the oven lights. If the igniter fails and doesn't light the pilot the sensor doesn't heat up and it shuts down the pilot and nothing works.
The igniter is usually accessable under the oven by removing the drawer. It has a single wire attached and looks like a short cigarette made of ceramic witha metal tip.
You didn't provide model number so I can't give you part number but if you look it up here you may be able to get one from Sears
http://www.searspartsdirect.com/partsdirect/index.action?sid=PSHx20080114x00001

Sounds like it's not getting gas. Check to make sure all gas line valves are turned on and the tank has gas in it.

In general lets be clear. The OVEN pilot is located under the oven door at the top of the Broiler.It is a small piece of metal just before the GAS safety Valve which acts on temperature so gas won't flow unless Pilot is lit,That's the OVEN PILOT.The stove's RANGE is the top burners where you heat Pots and Pans.It has either 2 Pilot lights that connect the burners to the Flame they are under the Range Top.Newer Models use electronic ignitions no flame.Please note if you had your stove/oven disconected or Gas off when you turn it back on there will be air in the line that needs to escape before you light.This is why in NYC when Utility Co.works on steet main the MUST re-light your appliances.Be Careful with Gas.Good Luck.

Turn on the gas knob for the oven (below the grill)
You will see an ignition button below the one that switches on the oven light,it is clearly marked.
Press in and hold the gas knob and press ignite button,you will see the safety bar flame light,when the safe to operate temperature is reached,the oven will stay lit after you release the gas supply knob.
Set oven temperate guage (gas mark 4 is approx electric 200 degrees,thats all there is too it
Hope that helps
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Hi, It very well could be the ignitor. Sometimes they work at first and then will not open the gas valve later in cycle. You can set the oven to heat and watch the ignitor. If it glows and the gas will not ignite in 30 to 45 seconds, the igniter is getting weak. I jope this helps.
Please let me know if I can assit you further.

Vic

The reason you can't smell it when the oven is on is because the gas is being ignited. DO NOT USE YOUR STOVE until you get this fixed by a gas fitter. You have a gas leak, which is either a loose fitting or faulty valve or line.

Call your appliance dealer IMMEDIATELY or you could have an explosion!!!!

you most likely have a bad oven ignitor...if you see an orange glow under the oven panel that is your ignitor trying to come on....but if it is weak it will not open the gas valve.....acess the ignitor and replace it

do you see a bright glow in the oven area when the oven is turned on it will take 20 secs or so..If not your ignator maybe bad no gas will flow into the oven unless the ignt. is good