Car running fine. changed fuel filter. now turns over but stalls,
Changed fuel filter, air filter, checked vacuum hoses for cracks- looked fine, checked egr valve for build up- fine. Started car. turns over and idle for a moment then slowly stalls out in about 5 seconds....hmmm help!
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Re: car running fine. changed fuel filter. now turns over...
If this had the problem before you worked on it then it could be bad gas. If after the fuel filter change, check the flow direction on the fuel filter and you may want to take off the filter and blow into it to see if it is clogged. Usually the fuel is looping around the system. Try taking off the fuel cap and start the car. It may be an air pocket and with the cap off it may eliminate the air pocket.
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Look in your engine compartment for damaged vacuum hoses. Your problem seems to be a vacuum leak. Hoses may be unplugged , split , ripped , broken from heat source, cracked. Take your time and look closely at every hose , I think you will find your problem. Good Luck Friend.
Usually popping through throttle body is a timing/misfire problem. Check for codes if possible. Inspect ignition system first. One thing comes to mind, check your air intake tube(big black hose from air filter box to throttle body) for cracks. If the truck idles fine but stumbles when you accelerate, a cracked hose will create a giant vacuum leak. Other things to check would be the TPS and MAF/MAP. A scan would be your best starting point.
First thing I would look for is a disturbed vacuum line which will cause rough idle. When replacing coil packs, you have to remove covers, etc. so when vacuum lines get old and dry, even moving one slightly can cause cracking, so look for loose or cracked vacuum lines around where you were working on engine. It may just be loose hose. Good luck
Try changing your fuel filter and PVC Valve. Sounds like a vacuum leak or moisture problem. Does it happen only when it rains or snows? Do you use fuel injection cleaner regularly> Try some dry gas. 2 bottles to a full tank, if moisture it could help. Might be bad gas. Next solution is Oxygen sensor. Check hoses to make sure they are on tight and have no cracks. If hoses are hard, dry & brittle they may have cracks you can't see and that will cause a vacuum problem. Could be a problem with EGR Valve. Check all connections and hoses. Replace Air cleaner filter and make sure there are no mice or squirrels living in motor compartment. Could block air intake and stall motor. Good Luck!
First look along air intake tubes, be sure no sensors were unplugged or pulled out of place. Lean codes are usually air mix related. i.e. mass air flow or air temp sensor. also look over all plastic vacuum tubes, be sure none are broken. listen for a hissing sound.
Faulty idle air control valve or timing chain has jumped. So after you changed plugs it got worse? Better double check to see if the wires are right. You should also look for more damaged loose or cracked vacuum lines. Wiggle them all around with the engine running.