Starts great when cold but if started within 4 hours it will not
If i leave the car overnight it starts 100% but once started and then stopped it might not start again - then after 5 hours after last try it starts - engine turns over great - is it lack of spark or lack of fuel ? mechanic says irt could be the air bypass valve - but another mechanic says if air bypass holding down pedal 1/4 way and turm ignition switch should be able to start any ideas ??????
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Could be the fuel pump relay, or a faulty pump, or pressure regulator. The fuel system is supposed to hold pressure after you turn the engine off. A faulty pump or pressure regulator could allow fuel to drain back into the tank overnight. You would need to crank the engine for several seconds to build pressure back up. The relay could be faulty and not giving the fuel pump power until the oil pressure comes up.
Well, it should not take four hours to replace the rear plugs, but the engine needs to be cold. You have to reach up from underneath the car along the firewall to get to them, if the engine is hot you will burn your arms on the exhaust and such. I did it on my 1995 Voyager and it only took me about an hour. Could be several things, might be worth the price to have a good shop diagnose it using an engine analyzer, you might have to leave it overnight, however, so that they can reproduce it.
If the battery is completely dead a trickle charge won't do much. These are designed to keep a good battery good. You need a regular battery charger set to 10 amps for a couple hours then 2 amps overnight. Be aware that sometimes if your battery has been completely killed it may not work for long, that is your car will start but within a few days or hours it will leave you stranded. You'll know because it will drag when you try to start it. Sometimes you get lucky and it works great for years.
Next time do use a trickle charger! Also if the charge you use is automatic then you can leave it hooked up in 2 amp mode when you are gone. Good luck!
Symptoms are indicative of a partially broken wire somewhere, the cold increases the resistance in the wires and if they aren't working at 100% to start with, will cause your problem. I think you are on the right track, I would replace any high tension parts not already new then start looking for wires showing a high resistance. Check and clean ( with contact cleaner aerosol ) any and all electrical plugs in your ignition system. I would try drying out your computer and packing around it with silica gel to keep it dry. Good luck
Have your fuel filter changed, your fuel filter may be at the end of it's life time and is dirty. The fuel filter should be replaced every 15,000 miles or once a year to ensure that the fuel system is running at 100%. Try that first and if there is an Auto Zone around your area, have the car scanned for the DTC codes. Auto Zone scan free of charge and can give you the recommended steps to addressing the issue that is causing your engine problem. Good luck and keep me posted, be glad to help you get your car running 100% again soon.
I believe you have a throtle body correct? IF so you have poor fuel pressure, plugged filter of injector.If by some miracle you have a carberated engine the the fuel is leaking from the bowl. Get a carb rebuild kit.