car hesitates to start when hot

29 people found this helpful. When the vehicle has been driven for at least an hour and gets hot it hesitates to start.

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The throttle position sensor monitors the throttle valves position and then relays.

. Mark helpful 210 Shane answered 7 years ago. First thing in the morning when the engine is cold it will start up with no problems. If you can get a jump start and it starts take it to a chain store like Advance Auto Parts and they can run a test that will tell you if you have a parasitic draw which is when there is something that is using electricity when the car is turned off.

Drive it around for a while like that and then see if it still does that. When it just clicks when you try to start it this often indicates a drained battery. Clicking this will make more experts see the question.

This hesitation due to a bad spark plug can be linked with a failing ignition system or bad ignition coil. Also when the car is switched from drive to neutral or reverse to neutral the idle goes from approx. The Reasons Why The Car Hesitates To Start Depending On The Type Of Engine The Car Has Because The Reasons Why Gasoline Engines Have This Problem Differ From The Causes That Are Found In Diesel Engines.

Car is hard to start Inspection. May 5 2010. This can happen especially if the electrical connections of the ignition system are damaged or if the ignition coil is failing.

Before you condemn the starter as bad you should perform a system diagnosis of the battery cables and starter. Some key information is missing here namely what make model of car is it and what fuel type. The starter itself may not be cranking correctly due to the heat impacting the relays which drive the mechanisms this was a common issue in old air cooled VWs and with how some newer engines are crammed into engine bays similar things can happen.

When hot car will not allow your to rev it more than 3500-4000 rpm sometimes it will get worse and only rev 2001 RPM car back fires through the intake intermittently if you push the gas down more when it acts up you can hear air being drawn into the engine but now power it bogs down. If your car struggles to start but runs fine this is a sign of a battery. It will crank up but with hesitation when the engine is hot.

If your starter is going bad and while running gets hot from the exhaust it will make your car not want to start. The large wire runs straight from your battery and always supplies power to your starter. It Takes Long To Start When Its Warm Unless It Cools Down.

The answer for a diesel will be very different to that for a petrol. Hesitation when accelerating in hot weather Car runs fine if tempriture below 17 degrees - Saab 2004 9-3 question. 05 camry hard to start when warm long crank time 1 answer.

Bad wiring Worn starter Charging system problems Bad battery Bad wiring Your starter requires 2 wires to run properly. However when they get bad they can be why your car hesitates to start. Essentially the ECU causes the engine to slow hesitate for self protection prevent knock.

Starter Will Not Crank When Hot Heat Soak If your starter easily cranks a cold engine but drags or cranks very slowly when hot there may be a heat soak problem. The spark plugs are bad Failing spark plugs are one of the most common reasons why your car hesitates to start. When your engine is running that hot you start to get engine knock.

Either low coolant or bad coolant level sensor. An easy fix to test is to take an old license plate and bend it around your starter shielding it from the header. When the car is warm the idle would sometimes hesitate.

Car hesitates to start but runs fine. Changing the spark plug can quickly solve this problem. Hey guys lately I have been having an issue with my Mustang when I go to start it after it sits for a little while like ten minutes or less it hesitates and takes a little longer to actually start than normal like it doesnt catch on the first sec of turning the ignition.

Car runs fine if tempriture below 17 degrees Posted by Ken Woods on Jul 06 2014. If it cranks OK but hesitates to fire but is fine after it is going and then starts right up again if you shut it off and try again it could be your fuel pressure regulator. Basically whats happening is that your vehicles ECU is directing the injector to squirt in a tiny bit more gasoline to make a richer fuel mixture towards the end of warming your car up faster.

A problem in any of these components can end up causing the hesitation youre experiencing as you start up. Up to 8 cash back Recommended Services. Could it be a problem with the coolant temperature.

Up to 25 cash back my car is idling funny. If any of the vacuum hoses around your engine become damaged or worn out you could experience air. Your knock sensor will sense this and the ECU will retard the timing to prevent pre-ignition and knock.

Top 10 Reasons Your Car Hesitates When Accelerating or Driving 1 Bad Throttle Position Sensor. Heres reasons why your car might be slow to start. If it cranks ok but hesitates to fire but is fine after it is going and then starts right up again if you shut it off and try again it could be your fuel pressure regulator.

During This Time I Have Very Little PowerAcceleration. Aug 22 2016 at 1420. Hesitation when accelerating in hot weather.

If you do see problems with the spark plugs then you need to change them. If this is the problem then the ECU will be leaving the car constantly on choke and not reducing the fuelling as the engine warms - so unplug the sensor and clean the contacts on both sides with some switch electrical cleaner not WD40 and inspect the wiring for any signs of damage to the insulation especially where it runs over other components and through the. A bad spark plug is one of the common reasons your car hesitates to start.

When your car starts fine cold then fails to restart while warm it is usually a coolant system problem.

Car Is Hard To Start When Warm Reasons What To Do

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