Post Emissions recall info

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Ford Motor Safety Recall

March 26, 2007

Safety Recall Questions and Answers

Q1. Is this a safety recall?

A1. Yes, this is a Ford-initiated voluntary safety recall.

Q2. What is the cause of the tailpipe issue?

A2. In rare instances, the diesel particulate filter can generate excessive temperatures that could result in flame at the tailpipe.

Q3. What causes the excessive temperatures in the diesel particulate filter?

A3. A built-up of hydrocarbons within the filter. Under normal circumstances, the diesel particulate filter collects particulate matter from the exhaust and then safely burns it to clean the filter. A build-up of hydrocarbons in the filter may cause higher temperatures than necessary for cleaning.

Q4. What is the source of the hydrocarbons and how do they reach the filter?

A4. Hydrocarbons are found in fluids such as engine coolant, engine oil, and diesel fuel. Normally, these fluids do not reach the exhaust. However, in rare circumstances, a leak within the engine could cause these fluids to enter the exhaust system and reach the filter.

Q5. How does fuel or oil reach the exhaust system?

A5. Some possible examples are a fuel injector stuck open or a leaking turbo shaft seal.

Q6. What are potential symptoms a driver may notice if they experience this concern before the recall is performed?

A6. In the rare case that vehicle owners experience this concern, the Check Engine indicator lamp in the instrument cluster may illuminate, and they may note a lack of power or rough engine operation. They may also hear abnormal noise from the engine or the exhaust and possibly white smoke or a flame emitting from the exhaust tailpipe.

Q7. After the recall repair is performed, what symptoms will the customer notice if the PCM detects excessive heat from the DPF?

A7. The system acts to prevent any flame from emitting from the tailpipe. The software will reduce fuel flow and air flow to the engine to allow the diesel particulate filter to cool. If an over temperature event occurs, the driver of the vehicle will notice the following:

· The Check Engine indicator lamp in the instrument cluster will flash, warning the driver to pull over to the side of the road as soon as safely possible.

· Engine RPM will be reduced to idle after 3-5 seconds. Power steering and power braking assist will not be affected but the customer will not be able to accelerate the vehicle.

Q8. Have there been any reports of fires caused by a Super Duty?

A8. As of the date of this publication, we received a single report of a grass fire, with no injuries. We have received only three reports to date of flame from the tailpipe across the U.S. and Canada.

Seneca Tank 5585 NE 16th Street Des Moines, Iowa 50313

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