jmden
Well-Known Member
...in cooler ambient temps after vehicle has been driven and parked in somewhat heated (45-60F this time of year typically) garage. When I go back to start it (don't do anything but turn the ignition...no foot on brake or anything else) approx. 4 hours later after putting it in the garage, it starts up, then often, the RPMs will drop down to 250 (that's right) or a bit less for a second or two. The car shakes, the engine sounds like it's going to die, then it revs back uo to where it should be and operation from that point on returns to normal. This happens very consistently. Check engine light does not come on (hard to believe) and no codes are there to be read by the dealership.
This has been to the dealer under Ford Warranty many times for this. They even had me go home one weekend with one of their code readers installed (IDS) to try and see what's happening when I start it. THAT didn't work at all because the ignition had to be turned to 'on' for about 10 seconds for the IDS and car computer to talk to each other before ignitions was turned to start to actually start the car. Somehow, this 10 second time period with the car ignition in the 'on' position does something to keep the issue from occuring at start up in the above mentioned conditions. So, this being the case, there is NO WAY to record what is happening.
Just yesterday, the Ford techs that the local dealership can email said to try and put in a new relay that's for the fuel pump as they had seen a situation similar to this from that relay being bad. No change. Brought the car home from the dealership. Parked it for exactly 4 hours in garage, went back out and started and RPMs dropped right down to 250 a second after start up, lived there a second or so, then went back up to around 1000 or so.
Now I'm at the end of my 36K Ford warranty and even though this is an onging issue the started occuring right after we purchased the vehicle in 2014 from this dealership (14K miles on it), apparently Ford won't cover any more work on it. Great. So everytime all fall/winter/spring when its colder, I get to deal with this issue after spending big chunk of change on a nearly new vehicle.
Any reasonable ideas would be appreciated. Thank you. Jon
This has been to the dealer under Ford Warranty many times for this. They even had me go home one weekend with one of their code readers installed (IDS) to try and see what's happening when I start it. THAT didn't work at all because the ignition had to be turned to 'on' for about 10 seconds for the IDS and car computer to talk to each other before ignitions was turned to start to actually start the car. Somehow, this 10 second time period with the car ignition in the 'on' position does something to keep the issue from occuring at start up in the above mentioned conditions. So, this being the case, there is NO WAY to record what is happening.
Just yesterday, the Ford techs that the local dealership can email said to try and put in a new relay that's for the fuel pump as they had seen a situation similar to this from that relay being bad. No change. Brought the car home from the dealership. Parked it for exactly 4 hours in garage, went back out and started and RPMs dropped right down to 250 a second after start up, lived there a second or so, then went back up to around 1000 or so.
Now I'm at the end of my 36K Ford warranty and even though this is an onging issue the started occuring right after we purchased the vehicle in 2014 from this dealership (14K miles on it), apparently Ford won't cover any more work on it. Great. So everytime all fall/winter/spring when its colder, I get to deal with this issue after spending big chunk of change on a nearly new vehicle.
Any reasonable ideas would be appreciated. Thank you. Jon
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