I just got my truck (2007 f150 lariat 97,500 miles) service at the Ford Dealership for: change oil, sparkplugs, passenger side window switch, driver side tire sensor, change third brake light bulb, and it cost me over $837.00. The problem is that my truck had started shaking when I come to a complete stop. I had immediately called the dealership and they said it could be the coil and they needed to put it on the power balance to see if it was the coil. Could it be the coil and why does it go out after an oil and sparkplug change?

 

Just the luck of the draw. It's not uncommon for a coil to go out with the mileage that you have...

 

I just had a similar issue with a ford dealership. I have a 2004 FX4 Screw with 98,000 miles that I took in for the airbag recall and to have the plugs and wires changed, AC recharged, transmission serviced (cost $750). As soon as I started it I noticed a bad miss so I walked right back in and pointed it out. After telling me the miss must have been there from before they said they would figure it out. The miss was on cylinder 7, they moved the plugs and wires around to see if the miss would move with them but it stayed on cylinder 7. So they said it was an injector, they replaced that and the miss actually got worse. They talked with Ford and they said was most likely a cam phaser problem so they were going to fix that when they opened the valve cover there was an enormous amount of oil sludge everywhere. The cam phaser was deformed and all the cam surfaces were scorched and scarred up. The oil sludge was so bad everywhere that I ended up having to replace the motor to the tune of $7000 for the motor and installation. Suppose to get my truck back today, what a nightmare. I change my oil every 5000 miles but have always gotten it done at a Quick lube place next to my work. Guess I won't be doing that anymore. I bought the truck used so I don't know what the original owner did for the first 40k miles, who knows he may have never changed the oil.

 

Another reason not to buy a used 4x4 truck!.............

 

I understand what you are saying but this is the first trouble I have had out of the truck and wasn't related to the 4x4 at all. Same thing could happen with a car. Buying used is a gamble but at the same time it is hard to pony up $40k for a new one. I bought my truck for $20k and now have another $7k in it. I'm still $13k cheaper than a new one.

 

After getting my truck back from the dealership for a possible coil problem, now they say I need a new engine. I don't understand, I had the truck for 10 days. I bought it in Hollywood, Florida and drove it back to my home which is 630 miles. I put over 2,000 miles on it since I purchased it and it always drove smoothly. I took it in for services (oil change, spark plugs, driver side tire sensor, and passenger side window switch) and it took them 7 hours to complete it. I was miserable and frustrated while sitting in the customer service waiting room. After they gave it back to me it was shaking whenever I slowed down at stop lights and the check engine light came on. Because the shop had closed when they gave me back my truck, I took it back the next day. Another 4 hours in the customer service room and they told me I needed a new engine. They said the catalytic converter is what caused the check engine light to come on. They were two bad spark plugs installed and that two coils that was causing it to miss, and a possibility that slug is in the engine. Now my truck sounds like I have a diesel engine. I left it there and told them to give it back to me like I gave it to them. Can anybody help me make sense of this?

 

Qtpsbe......so what was the out come?

 

I took my truck to Young's Ford Dealership in Charolette, NC. They put it on the machine and said the alternator wasn't putting a signal reading to the engine. Replacing the alternator will fix the problem. Note: Before replacing the alternator my truck ran fine whenever I unplug the sensor from the alternator. I chose not to drive my truck that way because I was told it may cause additional damage to the vehicle. It's a shame that the Ford dealership in my home town wasn't able to figure this out.

 

Wow, you went from needing a new engine to just an alternator? I guess some dealerships might not know how to fix a problem, but they sure know how to make money!

Interesting that a sensor on the alternator could cause a rough idle.