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Service Engine Soon


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ryanslloyd
New User

Aug 26, 2021, 4:12 PM

Post #1 of 5 (208 views)
Service Engine Soon Sign In

Good evening. My 2003 Ford Mustang with roughly 204000 miles on it would not start and was leaking fuel. The fuel pump was replaced at a shop. Since then, the fuel gauge is unreliable and only occasionally reads accurately and mostly just reads empty even when full. I have to turn the ignition 3-4 times to get the engine to start. The orange Service Engine Soon light is now on. The codes are P0316 and P0300 and the engine runs and idles a bit rough. Any ideas? It seems like it needs service but I also don’t wan’t to take it to a shop that just does multiple rounds of pricey diagnostics and troubleshooting while never truly solving the problem, which is sort of how I got here in the first place. I just completed a move so I haven’t yet found a good mechanic in the area.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 26, 2021, 4:42 PM

Post #2 of 5 (203 views)
Re: Service Engine Soon Sign In

It sure sounds like the shop totally screwed up the fuel pump installation. It sounds like the fuel gauge float got damaged and the fuel pump is not working correctly. It seems to be siphoning back into the tank when shut off and it takes a while to get it primed when starting it cold.
They should be standing behind their work.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



ryanslloyd
New User

Aug 28, 2021, 1:35 PM

Post #3 of 5 (153 views)
Re: Service Engine Soon Sign In

Good afternoon, two years ago my 2003 Ford Mustang would not start and had a puddle of fuel underneath. I had it towed to the closest shop and they replaced the fuel pump. Afterwards, the gas gauge no longer worked and the car would not turn over on the first start. I took it back to the same shop and they said it was a new and unrelated problem so it wouldn’t be covered under the warranty and then replaced the fuel pressure sensor, fuel pressure regulator, and the fuel filter. The car still would not start on the first try and the gas gauge still did not work. Given that they could not figure it out and were only charging me more money to not fix the problem, and it only seeming like an inconvenience of some sort to not have a gas gauge or a car that would start on the first try, I drove it as is for two years until the service engine soon light came on with the codes of P0300 and P0316 for misfires on start and random misfires thereafter. The shop wants to charge me more money to start the diagnostic process all over and isn’t even considering addressing the incomplete or incorrect install of the fuel pump and the corresponding malfunctioning fuel gauge and start sequence. Do you have any idea on how to fix these problems before the engine is permanently damaged? Thanks.

In Reply To



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 28, 2021, 1:49 PM

Post #4 of 5 (149 views)
Re: Service Engine Soon Sign In

This stuff only happens if you let it. They screwed up the fuel pump installation and they are trying to bluff to blow you off and you are letting them. The squeaky wheel gets the grease and there is no question that this is their fault.

You need to find yourself a better quality of repair shop. These places give the rest of us a bad name.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 28, 2021, 2:09 PM

Post #5 of 5 (146 views)
Re: Service Engine Soon Sign In

Did I see this began TWO years ago and you just put up with two tries to start it but took that long for codes. It also has 204,000 miles on it sport - stuff is going to happen.

* I too think the fuel pump wasn't right nor solved fully but wasn't throwing codes? Two years! Where is the next shop for you to use this one if the same games of why do you go there. Shops go out of biz that don't play fair, still can make a bad call but fess up to it and handle it for you.

* Granted lots of that 2 years was a struggle with a pandemic unseen problems with places even open if home life got screwed up as we know.

Still unless impossible distance wise I'd look for another shop ones around me (fewer ongoing for years) are busy + not always fast to get all the work done in their hands not just you doesn't equal bad treatment or work.

Whatever reason (owners or bosses maybe) it isn't working out well - that's for the shop to fix,

T







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