Fiat 500 USA Homepage

What's new in the Fiat 500 world

Fiat 500 Ranked Most Dependable

JD Power ranked the Fiat 500 most dependable in its class

Fiat 500X Suspension and Chassis

The Fiat 500X drives more like a Sports Sedan and not an clunky SUV. Here is why

Fiat 124 Spider Pricing Released!

Fiat offers the best value in the affordable roadster segment

Fiat 500L Design

Within its compact dimensions, the Fiat 500L has the room of a full-sized car. See how Fiat did it and the concept and goals of the design team

Alfa Romeo Giulia Quadrifoglio Debut

Watch the Alfa Romeo Giulia Quadrifoglio Debut Video at the LA Autoshow

Fiat 500 Abarth Oil Change

Everything you need to know about changing the oil on a Fiat 500 Abarth and 500 Turbo


Your One Stop FIAT 500 Shop!

Should you be able to buy a New Fiat from a Chrysler Dealer?l

Thursday, April 26, 2012

Fiat 500 Abarth After-Run Coolant Pump

US Fiat 500 Abarth MultiAir Turbo engine

The Fiat 500 Abarth has been gone over from stem to stern to make sure it delivers reliable performance, whether on a racetrack or on your local commute. These cars receive heavy use in Europe on the racetrack during track days and club events, not to mention being run flat out on the Autobahn (and Autostrada when no one is looking). One such feature of the Fiat 500 Abarth that helps guarantee reliability is an after-run coolant pump (ARCP) that circulates coolant through the turbocharger's housing to cool down the turbo when you turn the car off. Here is how it works:

The after-run pump is used to circulate coolant though the cooling system when the key is off and a predetermined temperature is reached. The primary reason for the pump is to help cool the turbocharger to help prevent damage due to heat soaking. The after-run pump is free spinning in the Key ON, Engine ON condition and activated during Key OFF, Engine OFF condition for up to 10 minutes. The pump draws coolant in from the thermostat housing and sends it to the turbocharger when activated. The Powertrain Control Module (PCM) controls the operation of the pump. The inputs to determine pump operation include engine coolant temperature, throttle position and engine off time.*

Fiat 500 Abarth After-Run Coolant Pump
On the 1.4L turbocharged engine, there is an after-run pump (4) located on the right inner fender, bolted to the front of the shock tower (1) . The after-run pump has an electrical connector (3) and two coolant hose connections (2).

So, that noise you hear when you turn off your Fiat 500 Abarth is your friend, the after-run pump, keeping things nice and cool for your next run!

*REMEMBER: The pump only turns on when certain thresholds have been met. It may not run every time you turn your car off.

Description and image courtesy of Chrysler LLC

No comments: