Truck periodically stops running. will turn over but no spark
Runs good for few days then all of sudden will just sop running. wont even compression start. will sometimes start right back up and other times wont, will take hours or days before will strart again. will turn over but no spark. have already canged fuel oump, filter, and rewired under dash and hood. coil tested good.
An expert who has achieved level 3 by getting 1000 points
An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.
An expert that got 20 achievements.
An expert that got 10 achievements.
Re: truck periodically stops running. will turn over...
So you know the fuel pump would have nothing to do with the plugs getting spark, right ? You said the coil tested good, is it getting voltage from the key switch and a ground signal from the distributor ?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Sounds like you are either losing injector pulses, fuel pump pressure, or spark pulses.
Before tearing into anything, check to make sure your battery and cables are in good shape. Then check for engine fault codes. Even if your check engine light is not lit, there may still be codes pending.
might want to check the starter. the parts stores can test it once its removed. does it turn over or it wont run? people confuse this. if it wont start that is a starting problem. if it wont run that is a fuel or spark problem. to total different thing. if it turns over the starter is good. not running after it turns it can be a number of things. crank sensor or cam sensor. bad ground or many other things. need more information what it is doing?
test fuel work? run for 3 seconds, sprayed into intake ports.
if yes, it runs on test fuel and stalls then find out why you dont have fuel.
what makes you think you even have fuel?
if there is no spark then we check the ASD relay action
and work from there, ask.
SOUND LIKE ALTERNATOR NOT CHARGING BATTERY.CHECK BATTERY VOLTAGE SHOULD BE 12.6 VOLTS.MAY SURE BATTERY CABLES CLEAN AND TIGHT.WITH ENGINE RUNNING CHECK ALTERNATOR OUT PUT AT BATTERY.SHOULD BE 13.5 - 14.5 VOLTS WITH ENGINE RUNNING.IF ALTERNATOR FUSE GOOD AND ALTERNATOR BATTERY FEED WIRE AND VOLTAGE REGULATOR WIRES OKAY NOT DAMAGED.DRIVE BELT NOT SLIPPING OR BELT TENSIONER NOT DAMAGED.ALTERNATOR MORE LIKELY FAULTY.TURN OFF RADIO FIRST.BEFORE REMOVING NEGATIVE BATTERY CABLE TO KEEP FROM LOSING RADIO CODE.
The car may be hard to start because it may need a normal tune-up. If the spark plugs are pretty used, they will slowly stop burning as much fuel because the spark slowly gets lesser and lesser. On a cold day the fuel is harder to ignite with a small amount of spark.
Normal idle when its cold means that your cars idle is probably too high. If you lower the idle, the choke on a cold day will keep the idle a little higher until the motor warms and then it will kick back off. If the idle is too high, it will run very rich, smothering itself with fuel, and causing the idle to stay low. When the car warms, its creating better spark when its warm, and with the idle being too high its running at a fast idle.
The car wont start sometimes can be the cause of a few things. If the ground is bad on the fuel pump, it wont make a good connection sometimes for when you turn the key on, the fuel pump dont pump the fuel to the engine. Another one can be that your accessory switch can be loose going to the fuel pump. I think its your ground though. Good luck! Hope this helps.
Have a nice day.