This just started when I drive my cars heats up real good nice and warm just how I like it but when I come to a light and put on my breaks it feels as if the a/c has been turned on nothing but cold air - help why is it doing this
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Re: 1996 Toyota Avalon Heating problem
It may be as simple as low coolant level. When u are driving, the water pump is circulating the hot coolant to the heater core, if the level is low, at idle, the coolant is circulating much slower, and if level is low, the coolant doesn't circulate thru the heater core. I suspect when u check, u will find the level too low. If so, add to proper level and let me know what happens. If that's not it, I'll help further.
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This is normal. On your car, on a cold start the pressure will be around 75 PSI. After the engine warms an oil pressure of 15-20 PSI at idle is just what it should be. The oil pressure gauge should escalate when accelerating up a bit to. If your old school like me 15 PSI mean danger but tat Caddy is just fine.
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The heater core can be stopped up or thier might not be enought coolant in the system as it has to be full for the heater to heat. The engine also has to warm up so if the therromstate were opening too much and the engine does'nt warm up the water will be too cold and the heat won't work. Remove the heater hoses at the motor conections and blow them though If they are Ok they'll blow though real easy. The cars cooling system does'nt blow very hard and is stopped up real easy. Blowing though with a garden hose reconnect and refill with antifreeze and your good to go. If it does'nt have enough antifrezze it could be frozen and the ice won't cicculate. If this has happened you may need to put the car in a garage to warm it up drain the light antifreeze coolant and put in good coolant withthe right amount of antifreeze.
You didn't need a different distributor,just the sensor in it,if it was bad. That now appears questionable.
When it heats up,your ignition module,is breaking down, under load,and your getting a misfire. That would be a possible cause.
Codes don't always indicate a bad part,only the symptom, of the real issue. e.g.(Misfire)
This sounds like your automatic climate control is starting to malfunction. Check to make sure your coolant is full, and temp is not fluctuating, and when your vehicle is warmed up, try using the low setting and feel for air temp. Is it warmer than if you turn it up? When at idle the vehicle is not producing heat the same as if you are driving, putting load on your engine and more air/fuel combustion means more heat, which is why you can feel heat while driving. Ideally you should feel heat as soon as the engine is warming up, getting hotter as it reaches peak temp of 190-210 degrees. You can try to make sure your water control valve is not blocked, and all electrical connections are secure. This will be located close to your firewall and connected to the coolant tubes that run into your firewall to your heater-core. Also use recirc (setting)to try to summon as much heat as possible, however ultimately, you may need to take you vehicle in for service. If it only warms when driving defrost will be an issue. Good luck.