Engine Stalling

What NHTSA is examining

The subject vehicles suffered from a design issue whereby water could run down onto the cowling under the hood and located in the area of the windshield wipers and then drip onto a computer module, the Powertrain Control Module (PCM), which could be manifested in a variety of symptoms depending on which part of the circuit board became wet or which of the connector pins shorted out.In addition to causing an engine to stall, which may or may not then restart, the water intrusion could also cause the transmission to shift poorly, the vehicle to have erratic power, a malfunction indicator light to come on, or result in an inability to start the vehicle, an inability to shift the vehicle into either forward or reverse. Also the problem could cause a higher than normal idle RPM in Park, or for the radio to malfunction, or the interior lights to stay on.During this investigation ODI was concerned with the effect of the engine stalling or a drastic and sudden loss of power either of which may create a safety risk.In reviewing the actual number of these types of incidents, collectively referred to here as engine stalls, the number was found to be below what would be considered a defect trend.For example, the number of engine stalls identified in Ford's warranty claims for the model year (MY) 2004 subject vehicles, the MY with the most failures, was 200 out of population of 125,865, for a failure rate of 0.16%.The one crash recorded by a complainant to NHTSA, VOQ 10311522, alleged…

Vehicles under investigation