Question about 2005 Chevrolet Impala
3.8l engine wont start when hot unless you press accelerator startts fine when cold and runs fine going down the road
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Posted on Jan 02, 2017
SOURCE: I have a 2003 duramax
Get the fuel filter checked when its in no start condition in hot weather.Also disconnect the FPR and see if that is making any difference.FPR means fuel pressure regulator.If disconnecting the fuel pressure regular helps the engine to start in hot weather then its FPR problem.
If its not starting in hot weather or taking time to start in hot weather then problem is related to glow plugs.This glow plugs needs to be checked and replaced.Also try cleaning the glow plugs then recheck.------------------But if the car is running normally but it stops when it gets hot/warmed then in that case glow plugs are not faulty.In that case the fuel pressure has to be checked.If fuel pressure is low then fuel pump and fuel filter are to be replaced to solve the issue.----------
Also check the fuel filter seal.If this seal is loose,then tight it and check.
If the seal is cracked or loose then it can cause this problem.When its cold the seal gets contracted and when it gets hot it expands and the fuel pressure must be loosing.The seal on the fuel filter could be the issue, try and give it a 1/4 turn more unless its on really tight.
And make sure the bleeder valve up top is good as well as the Water sensor on bottom is tight too.There is no electric fuel pump on these trucks; the CP3 (high pressure pump) sucks the fuel from the tank by itself....thats why any pinhole leak anywhere in the fuel line/filter/system will make it hard to start.-----------But when you start the truck then fuel pump runs for few seconds and this makes the fuel run through the pump to the engine.If you notice the fuel is running there and if you see wetness at the engine side of fuel pump,then its faulty glow plugs causing this.But if no wetness noticed then its fuel pump and fuel filter issue.
This troubleshooting procedure will help you to solve the problem,by detecting the faulty part.Thanks.Helpmech.
Posted on Jan 14, 2011
SOURCE: Just bought my 2008 Chevy
You may be low on coolant - or have an air bubble in the heater core! Make sure you have the right antifreeze and mix 50/50 with water. Start car, turn heater on max heat full blast and fill reservoir with coolant. If you have access to the radiator cap I would fill from there. This is a pressurized system, so it may blow some coolant out at you. Squeeze upper radiator hose to ensure it is full, cap radiator and now recheck the reservoir. If this doesn't help, you'll need to raise the front of the vehicle so the radiator cap is above the heater core hoses. Remove cap, start engine with heater and blower on high and fill radiator. Cap radiator before you lower the car and you should be good. Keep an eye on the coolant reservoir as you may have a leak which would cause the low coolant symptom. You also have a sensor to tell you is you are low on coolant. If you are and it is not lighting up, you may want to have it ( the sensor) tested and replaced.
Posted on Nov 17, 2010
Change the fuel filter! Make sure the air filter is clean also. The fuel filter is near the rear door on the inside of the frame rail. Good luck!
Posted on Jun 14, 2010
could be trash in fuel filter or around pickup screen in tank. While driving everything sticks to them like magnet when you shut off and it sits it all falls off to happen again when you start the vehicle again
Posted on Aug 04, 2009
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For car running hot and overheating issues, I suggest to you go
through this help links. Click this link below and go through the
troubleshooting procedure to take care of the problems: ----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?
Car overheats and Air blows hot at idle?
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.
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