I am having a problem with a 2004 mercury sable
The car belongs to my sister. She informed me that the car will intermittently not start. The car will crank but thats it. If the car starts in runs and drives fine.
I am thinking this is a fuel pump problem.
I just changed the relay. She said this did not change anything. I was there one day when the car would not start. I used my elm327 bluetooth connector with my phone paired with “torque” android app, free version. (do you guys have a better app?) The fuel pressure read 276 kPA which I believe is around 40 psi.
However I do not know how often this information updates. It also felt like it would briefly fire every once and a while.
I went and started the car yesterday and drove it home. Now I have to diagnose and complete these repairs in less than zero temperatures.
2 years ago I was able to pass a hands on and written exam to become a fleet mechanic for USPS. Before that I have been just a backyard mechanic.
I am well versed on the 5 different GM drive trains at work. I never work on fords. I am not sure if they are much different from anything else.
I really appreciate any insight you guys might have on this issue.
My next step in my head is to wait until this happens again. Then I will test for spark at the plugs. I will also use my scan tool to try and monitor fuel pressure as well.