Well here is a good one. MJ was riding her Stallion last night. We went to dinner came out and rode about 4 miles and stopped at a Publix for some milk. Came out started the Stallion and when we started to give it some gas it died just like it ran out of gas. we know it had at least 3 to 4 gallons so that was not the problem.
It would start and idle even in gear but push on the pedal and it would die. We idled down the street for 3 miles in traffic to the motel. I figured fuel filter or maybe fuel pump. Got up made arrangements at a garage to look at it and called AAA to have it towed.
While I was waiting I opened the hood to make sure I remembered where the data port was and noticed that the air intake plenum looked strange. Looked at it closer and it was completely broke in half where the air filter and plastic sectioned that the MAP sensor are mounted and attaches to the section of the plenum that goes to the throttle body.
It appears that the plastic failed from getting brittle over the 7 years of heat and vibration. I had some repair tape wrapped it nicely to put the whole thing back together sealed. That fixed the problem.
With the MAP sensor not being able to read moving air (the sensor was down line from the break) the ECM would not let the Fuel Injection work. No air No gas. Something to be aware of as our Stallions are aging. I will be looking into seeing if I can replace the plenum. Works great for now.
It would start and idle even in gear but push on the pedal and it would die. We idled down the street for 3 miles in traffic to the motel. I figured fuel filter or maybe fuel pump. Got up made arrangements at a garage to look at it and called AAA to have it towed.
While I was waiting I opened the hood to make sure I remembered where the data port was and noticed that the air intake plenum looked strange. Looked at it closer and it was completely broke in half where the air filter and plastic sectioned that the MAP sensor are mounted and attaches to the section of the plenum that goes to the throttle body.
It appears that the plastic failed from getting brittle over the 7 years of heat and vibration. I had some repair tape wrapped it nicely to put the whole thing back together sealed. That fixed the problem.
With the MAP sensor not being able to read moving air (the sensor was down line from the break) the ECM would not let the Fuel Injection work. No air No gas. Something to be aware of as our Stallions are aging. I will be looking into seeing if I can replace the plenum. Works great for now.