ok guys 2008 20,xxx mile convertible autiomatic.

3 CEL

PO410
PO453
PO171

Any ideas where to start to repair these.

 

PO410 can be caused by the Secondary Air Pump failure due to bad contacts in the RCM. Check this out:

https://www.crossfireforum.org/forum...-no-start.html

 

ok reading that seems like the RCM usually cause a no start problem. would this still be the problem if the car runs it may be a bad solder joint in the RCM?

 

Yes. Starting here : https://www.crossfireforum.org/forum...0410-code.html


will lead you to the RCM. It is an easy fix so that is where I'd start.

 

Sorry I had posted the wrong link in the previous post. Just corrected it !!!

 

0453 - I had that one, it was caused by an abnormally high voltage (indicating fuel tank pressure all the time) which was caused by ME. I washed the car with the top down and let water get on the connector on the top of the gas tank. The ground pin corroded, and this forced a high on the sensor line.

I unplugged the connector and cleaned the pins with alcohol. Problem fixed.

171 sounds like a bad or just filthy MAF sensor. One lady in the past two weeks that showed up here actually cleaned it herself and got the car going - but HER car was running rough due to it. Can't say it set a code, I don't remember.


Get the RCM resoldered first and see what you get after that. Bad RCM solder can cause:

A no crank
A crank but no start
A fuel pump that doesn't run all the time, causing low/no fuel pressure
Other problems


If you trace the wiring, the RCM switches power to numerous feeds thru out the car. Get the whole thing resoldered and see what code(s) go away!

 

awesome i will look into resoldering the rcm and go from there.

 

ok pizzaguy i think i have a evap pressure solenoid problem. the car has a ton of pressure in the gas tank as it is. it is hard to put gas in so that solenoid must be stucked. i will work on all of this tomorrow....

 

Would you like to rethink that statement, when you open the gas cap the pressure in the tank is the same as the pressure between your ears.

 

ok so i am saying that i believe the solenoid is stuck closed. the care has a totally huge problem putting gas in it. it keeps kicking the gas pump off like it is full.

this makes sense to me now....

 

maybe the tank has partially collapsed ?

 

doubtful the car has electrical problems i bet it is the solenoid... i will dig into it tomorrow. anyone have any ideas on how to trouble shoot it?

 

Maybe the rollover/overfill valve is jammed in a partial closed position?
This valve is at the bottom of the fill tube, it has been a problem before. It cannot be got at, the tank is non repairable. Maybe this valve could be pushed with a stick?

 

i have tried and tried and tried to get this gas tank filling problem fixed and i am making no progress....

i ran a 1/8" steel rod 3 feet into the gas tank i met some resistance and passed it but the tank still will not take gas besides .15-.2 of a gallon at a time....
THIS IS FRUSTRATING

 

As sparky said : It is not the usual bad solder on the 3 board connectors, it is burnt contacts on the air pump relay.
You can try taking the armature off that relay and cleaning up the contacts with emery paper, or you can replace the relay.

 

i can do that, location of air pump relay?

 

a picture is worth a thousand words :

 

thank you ala!

 

air pump relay contacts were clean but i polished them with emory and went ahead and resoldered the RCM 3 points that people repair.

I will test drive it as able but it is a pani right now with not being able to hardly get gas in it

 

If they were clean then they should not have been touched as they are quite polished, I do not know what grade of emery you used but just the name emery means it was coarser then a polishing paper. If it is quite rough the contact may spark from different points and burn the faces.
Points are polished and normally at least one is domed to focus the spark.

That's my opinion anyway.