Ford :: 2004 - Engine Cranks Normally Then Quickly Looses RPM To The Point Of Almost Stalling
Aug 10, 2011
A little background. I was changing the oil and oil filter and noticed that the battery post was corroded. Disconnected the battery and cleaned the post. After that, I have noticed that most of the time, whether hot or cold, the engine cranks normally, quickly looses rpm to the point of almost stalling then recovers and runs fine after that. No check engine lights on at all. I have since removed the battery connections and waited about 5 minutes and reconnected them, turned on the ac, lights, anything that would put a load on the engine and cranked it hoping that it was just a computer problem. Nope, same issue. Truck runs fine otherwise, just the start up issue. Engine is gas powered 5.4 liter V-8.
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My standard 2002 accent is undriveable and at the mechanic right now (100,000km). For the past few weeks the car has driven very jerky. While in first and second gears if i accelerate too quickly it just jerks/slips and has very little power.
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The mechanic now says 3 of my fuel injectors need to be replaced and the fourth will probably go soon and it will be about $700 to fix. Does this sound right for these codes?
I called hyundai parts and they told me each injector is $236...he also told me he doubted they had to be replaced cause he has never seen an accent have fuel injectors replaced and also they rarely sell these injectors, he said it was probably something electrical.
I have found 4 injectors on ebay for $200 but is this really the problem? The mechanic says it is 100% the problem. But from reading the forum I dont think so.
Also wanted to add that i often noticed the smell of burning plastic. Smoke seems to be coming from spark plug area when i notice the smell but nothing looks burnt/melted.
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What else is there? There's a little doofer next to the coil that looks like it has two wires come out of it, looks magnetic (has metal shavings on it, probably from old rotor)... Could the ignition switch be the problem? It cranks, but no spark.
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MPG's haven't changed, fuel filter was changed 15K ago. Air filter is clean. Plugs were changed about 10K ago. I always use Shell/Chevron gas. MAF sensor looked clean when I took it out so I didn't do anything to it.
This is starting to happen more frequently, maybe once every few weeks and I get a feeling it's the start of something. I've found myself waiting a few seconds for the fuel pressure gauge to come up before turning the key to start reliably. In the past, I could simply flick the key and it fires up the first time.
I see posts talking about the fuel pump module above the spare tire. What are symptoms of that going bad? Any pending codes that might be stored?
I'm about to get myself a scanner since I need one sooner or later. Which specific PID's to check while debugging this?
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