good morning all.


I hear what sounds like a small electric motor start up when I turn on my key. It is not the fan motor as I turned that off to be sure. Also, my ESP/BAS light stays on. Any coincidence.


Thanks in advance for any help. Oh, it is a 2004 crossfire base model.

 

The sound when you just turn on the key is the electric fuel pump running, normal.
There is no relation to the ESP/BAS light.
Any codes ?

 

Another sound once you have started your car is the air pump for emissions
It runs at start up and periodically while the engine is running

No relation to the BAS ESP light though but to reset that light while the car is running turn the steering wheel fully to the left and then fully to the right and then back to center
The light should go off right away or within a few miles of driving
This light is generally triggered by a faulty wheel speed sensor

BAS is your Brake Assist System and is designed to maximize the vehicles braking maneuvers.

ESP is the Electronic Stability Program.
This corrects for over/understeering of the vehicle by applying brakes to the appropriate wheel.
Engine torque is also limited.

 

No 2004's were base models only because there were no other models, 2004 cars were top of the line Crossfires and had features that were later dropped on later Limiteds and Base models. A 2004 is basically a Limited with a couple of extras, not big extras except the auto dimming rear view mirror.

 

Thanks for all the help.


As for the BAS, I tried the wheel lock to wheel lock thing with no effect so maybe I have a bad sensor.

 

If it's only with the key in on position & the car doesn't have to be started to hear it it's prob. the small fan running in the relay control compartment under the hood next to the battery. This fan is a continuous run with the key on & in run pos. to keep the same box cool & also cools, via small duct work, the tranny control module if equipped with an auto. tranny & the radio amplifier which are located under the pass. floor.

 

What air pump? I know of only one air pump that locks the doors and the hatch.

 

"Secondary air injection" is, I believe, the correct term. It injects air into the exhaust at startup to increase O2 in the exhaust to heat up the cats faster.

EPA nonsense, really. If it does NOT run, the CEL comes on and you get a P401 code. I know this because SO many of our cars experience a fracture of the solder on the RCM such that the pump won't run - and that means you can't pass an emissions test. A few minutes with a 100 watt soldering iron and some rosin core solder fixes it.

Ask me how I know this. (Twice in 70,000 miles)

 

Correction--- it throws a P0410 code when it malfunctions
P0410 Secondary Air Injection System Malfunction

 

I didn't mention anything about an "air" pump.
But to summarize electric motors / pumps on Crossfires :

1. The secondary air injection pump on front top of the engine.
2. the ABS pump in front of the fuse box.
3. The itty bitty fan motor in the electronics box by the battery.
4. The REST pump front right fender.
5. The windshield washer pump in the passenger fender well.
6. The A/C blower under the passenger side dash.
7. The locking module pump in the rear right trunk well.
8. The engine cooling fan.
9. the electric fuel pump right side just in front of rear wheel.
10. the adjustment motors in each outside mirror.
11. The 2 window up/down motors.
12. the spoiler up/down motor on non-SRT6 models.

Limited : 6 seat adjustment motors.

SRT6 : the Intercooler pump front right below the headlight.
Roadsters : the top pump left rear fender well.

and .....

oledoc2u : the swiveling fan on top of the dash so he feels at home like he's in one of his 18 wheelers.

 

ROTFLMAO! Too funny! I can actually SEE that!