Question about 2000 Pontiac Firebird
Receiving code that says bad tps in 2000 firebird 3.8 v6. Cannot find it
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Posted on Jan 02, 2017
SOURCE: throttle position sensor
Sounds like you have a vacuum leak somewhere on the engine. If the tps was bad, it would set a code and the check engine light would be on. Also, check your air tube that goes to your throttle body - make sure the hoses are connected tight and the tps is on the throttle body down on the front of your engine where the hose runs down to it. It's not really that hard to get the throttle body off. That would be the best way to change the tps - to take the whole throttle body off and put new gaskets on and tps on it. Hope this helps you out. PHil
Posted on Jan 16, 2009
SOURCE: Crankshaft Position Sensor
The crank sensor is on the front of your engine behind the harmonic balancer. You will need a balancer puller for a 3.8 and a crank sensor alignment tool to do this lob.
Posted on Apr 30, 2009
It is located under the water pump. Make sure when you remove the sensor that you rotate the crank shaft and look in the hole to make sure the pick up magnet is still in there. Sometimes they come loose and cause a no start or long crank. You will need to have the code cleared still.
Posted on May 06, 2009
The OBD II code for P0400 is Exhaust Gas Recirculation Flow Malfunction.
I'm sure the only thing you have left is you may have to replace the EGR valve or check for any leak from the vaccum lines going to to EGR valve.
Posted on Jun 01, 2009
$900? $850? You could get a new engine for that price.
If the car has this condition only when it is very cold then I suspect that during that time it is operating in a condition controlled by an engine temperature requirement. When it is cold enough it will continue to run the fuel management in what is called "open loop" mode until it is warm enough. It needs to be warm enough to allow the oxygen sensors to properly read the oxygen level of the exhaust gasses and send that information to the computer, which will then calculate and command the proper air to fuel ratio. The other important reason is that the exhaust gasses must also be hot enough to activate the catalytic converter contents to break down the combustion byproducts, which is about 650F. When it reaches the minimal operating temperature requirement, the fuel management program then switches to closed loop fuel control...at that point emissions are the least and fuel economy is improved.
A new throttle body will not solve that problem. A higher temperature thermostat or a higher coolant to water ratio will help.
By the way...a throttle body for your car is no where near $900...not even half of that with even the MAF sensor included and that's $150 by itself.
Posted on Jan 10, 2010
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