I bought the car used last yr with 28xxx and every morning last year when it was cold the pump was really loud for a few mins and fade away slowly. Now the po411 code is coming up and now I'm not hearing the pump this year at all when it is cold, think the pump is not working. Is it normal for the pump to be so loud like that or was something going out then??? Now with this code on the Auto Start does not work and that is a bummer. Is this something that a "shade tree" repair person can tackle??? LOL Thank in advance for any help with solving this problem.
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if it has climate control ,check that the heater is not partially on
clean the evaporator under the dash as there may be gunk in the fins
If the system is too efficient thre will be ice on the evaporator which will not allow the system to reach temperature.
check with an accredited ac specialist shop
To get that last bolt out you need to move the power steering pump out of the way. Just remove the two bolts holding the PS pump and push it aside. You don't have to remove the pump hoses you just need to move it an inch towards the firewall.
Hi there: Are you ferer at DTC P0410 - Secondary Air Injection System Malfunction
If this is right, this code refers to the emissions system. The AIR pump puts air to the exhaust to lower emissions. It takes in outside air and pumps it through two one-way check valves into each bank of the exhaust.
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. In any cold climate, especially in climates with higher humidity, this water may be more excessive. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.
A code P0410 may mean that one or more of the following has happened: Water may have collected in the AIR pump or the vent solenoid and frozen or corroded the pump Blown AIR pump fuse due to freezing up
Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.
Yes, change out the thermostat. It's probably stuck all the way open because in Arizona it rarely gets cold enough for it to need to close down allowing the engine to warm up. It's easy to do. Try this link for instructions.
The noise is from a thing called cavitation.......if the pump is wearing out, it will start to "churn" the fuel causing air bubbles, which create the noise.
Being over 12 years old, I suggest a fuel pump replacement.
Although this particular code is not generic for many years because the system the code deals with is on a limited range of grand prix, I looked at info for a 2005 grand prix 3.8 liter. P0411 Secondary air injection incorrect air flow detected. Deals with The air injection pump, hoses, and switching valve(s) could all be at fault. Water and impact damage to the pump is common, as is stuck switching valve. Hoses can break or come off. The pump itself you should hear run shortly after starting the car(most times). It sounds like a very high pitch vacuum cleaner. There are a range of specific diagnostic test dealing with this particular code.
I would have you oil pressure checked. The oil pump or bearings could be going out. The lifter noise on this car usually will go away faster then 5 minutes. I think the noise is lasting a little to long.