Question about Cars & Trucks
Check that the vent valve for the fuel tank is not blocked or the fuel cap is not blocked as it may be a vacuum forming in the tank and reducing the fuel flow to the engine. Quick test is to loosen off the cap and see if the problem is still there. If the engine rpm is connected a vacuum operated control (Engine rpm increases when the vacuum is required) check that there is not a leak in the hose /line or loose connection If the engine has done a lot of hours then there may be a problem in the governor control
Posted on May 09, 2014
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Posted on Jan 02, 2017
SOURCE: 1993 Ford E-350 Fuel issue
This can be a common problem among engines with some miles like 50k to 95k range. There is an idler unit that is opens and closes during starting. They get clogged with carbon and stick. I am going to suggest you to look in this area.
You have many other ways to go but it is in the full body throttle area more than likely.
With a 2002 you might be able to get a book and find it. It is usually stuck in the side of the throttle body (carburetor) This is an educated guess but it is worth looking at.
Posted on Mar 02, 2009
Here are the most common causes of surges, stalls at stops, low erratic idle speed, rough idle and engine hesitation, it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
Posted on Mar 29, 2009
This truck is fuel injected, the problem sounds like a weak fuelpump, it runs when you pour gas into it until that gas runs out, the first thing is to test the fuel preasure, if the pump is weak it may run with gas poured into it but wont idle, also a common problem is the coolant temp sensor and the ground wires to thermostat housing bolt but i wont bet its the pump inside the fuel tank, if you put a fuel gauge on it there should be at least 55-61 psi if its a few pounds lower it can cause problems, you have everything else and it runs with gas poured so its a fuel problem check the preasure, theres a valve up top on the fuel line to connect a fuel gauge to it, start there hope this is helpful.
Posted on Dec 27, 2010
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