What causes Honda Civic to not start when hot?

The symptoms you described have 3 common causes on Honda/Acura vehicles. First: the “shoulda” disclaimer Reporting the code that drives that check engine light you saw is the most important piece of information you could give us. Without that code everything is blind diagnosis (guesswork) based on a myriad of personal experiences.

Why does my car not start when it’s Hot?

This could be due to a few things related to the fuel supply line, including: The reason why this happens only for hot starts is because the fuel is more likely to vaporize as temperature increases. In order to avoid vaporization problems the fuel lines are expected to be pressurized during a hot start.

What happens if the main relay on a Honda Civic is bad?

Although the problem is the same, different Honda models have different symptoms if the main relay is bad. On an Accord, you will lose fuel pressure. If the main relay bad on a Civic, you will lose power to the injectors and the fuel pump, but you may not lose fuel pressure since the fuel injectors can’t open without power.

Can a bad ECT cause a Honda Civic to not start?

See honda-tech.com for a conversation about ECT sensors. …yes a bad ECT can cause hard starting or a no start condition. If the ECT sensor is bad you can get a new one for around $30. It maybe a workaround to get it started, but it does nothing to address the cause of the problem or fix it. Recommend for deletion. – theUg Jun 17 ’13 at 15:31

Why does my Honda Civic won’t start?

While there are a variety of reasons your Honda Civic won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter.

Why does fuel vaporize during a hot start?

The reason why this happens only for hot starts is because the fuel is more likely to vaporize as temperature increases. In order to avoid vaporization problems the fuel lines are expected to be pressurized during a hot start.

What to do when your Honda engine won’t start?

Let the engine run for about 20 minutes with the hood closed. Remove the wire from the throttle linkage and turn the engine off. Let the engine sit for five to ten minutes, then try to restart the engine several times. If the engine doesn’t start, turn the key on.

What does check engine light mean on Honda Civic?

If the car won’t start, the “check engine light” is almost certainly on. This light means the engine computer has codes stored that identify a malfunction. The first step to figuring out what’s wrong is to pull those codes. Civics built before 2006 can display the codes on the gauge cluster through a series of flashing lights.

Can a 1999 Honda Civic start while driving?

i have a 1999 honda civic ex which has 165,000 miles. Within the last few months the car will shutoff while driving. i have no power steering, nothing. i have to pull the car to side of the road and put the car in nuetral to start. Sometimes it will start right away and other times it will take about 5 to 10 turns of the ignition.

Can a Honda Civic shut off while driving?

Within the last few months the car will shutoff while driving. i have no power steering, nothing. i have to pull the car to side of the road and put the car in nuetral to start. Sometimes it will start right away and other times it will take about 5 to 10 turns of the ignition.

What to do if your Honda Accord won’t start?

Usually you need to apply it if your car has problems when you turn off your cars engine for a short period of time and later try to start it while it is still hot.

Why does my car engine not start when hot?

So the ECU thinks the engine is not spinning and doesn’t fire the ignition; hence the engine does not start. If it is a crankshaft position sensor it will be located somewhere on the circumference of the freewheel; if it is a camshaft position sensor, it may very well be located inside the distributor.

Why does my Honda Civic start when the engine is off?

Explanation I eventually came across was that injectors leak while engine is off because fuel lines are still pressurized. If you just drove, they haven’t leaked enough to flood cylinders. If the car sits for a long time, the gas will drip out past the compression rings into your oil.

When to start a hot engine in a Honda?

Honda automobiles are notorious for having troubles with restarting after a fully hot engine has been sitting for five or ten minutes—such as when you’ve just pulled into a gas station fill-up or when you’ve run into a grocery store to pick up a few items.

What should I do if my Honda Civic won’t start?

The check engine light will likely appear if your car won’t start. If the engine won’t turn over, or if there’s no sound from the starter when turning the key, the battery is likely dead. The easy way to test the car battery is with a multimeter. Connect the multimeter to the positive and negative battery terminials.

Why is my Honda engine hard to start?

But the main relay most often fails when the weather is really hot, while the other possible causes will exhibit the symptom nearly all the time. Although you might have a hard start now and then with a faulty main relay, it is usually not enough to cause you much concern—you can usually get the engine started despite the momentary difficulty.

How can I tell if my Honda Civic is working?

Civics built before 2006 can display the codes on the gauge cluster through a series of flashing lights. Later model Civics will need to pull codes through an OBD2 scanner. These codes will give a good starting point towards figuring out what exactly is malfunctioning.

Is the Honda Civic battery good for a cold start?

If it’s strong, the battery is fine. Honda alternators are usually good for like 8-10 years, so I’d be surprised if that were failing, but even if it were, you’d have symptoms 100% of the time, not just on cold starts. Autozone/Advance will check your battery for free, just in case.

Why does my car starter not crank when it’s Hot?

If your starter easily cranks a cold engine, but “drags” or cranks very slowly when hot, there may be a “heat soak” problem. Before you condemn the starter as bad, you should perform a system diagnosis of the battery, cables and starter.

Why does my Car start hard when it’s cold?

The pressure regulator (relief) valve may have allowed fuel in the line to drain back into the tank. Which when starting the engine would require a longer crank time to get the fuel system back up to pressure. Long as it does not take more than 15 seconds for the engine to start; there is no problem with the car.

Why does my 2012 Honda Civic not start?

If it’s a 2012 with the factory battery, that’s definitely a possibility. However, I think if the battery were dying, the engine wouldn’t even crank for 10 seconds, so there’s probably more going on here. To get to the root of it, an internal combustion engine needs 3 things to run: air, spark, and fuel.

Why is my car not starting when I Turn on the ignition?

You pop into your garage in a hurry, but the car will not start when you turn on the ignition key. You can hear the starter spinning, but it’s not engaging with the flywheel. What could be wrong? Here is a more detailed list of the 5 most common causes why your starter won’t engage.

What’s the trouble code for a Honda Civic?

Honda Questions This answer was rated: Honda 2001 Civic Trouble code P1361 .. After cool down, runs fine. Wires all seem tight… Honda 2001 Civic Trouble code P1361 .. After cool down, runs fine. Wires all seem tight Ask Your Own Honda Question Share this conversation Answered in 5 minutes by: 8/19/2011

What’s the problem with my 2001 Honda Civic?

Honda 2001 Civic Trouble code P1361 .. After cool down, runs fine. Wires all seem tight Honda 2001 Civic Trouble code P1361 .. After cool down, runs fine. Wires all seem tight – Answered by a verified Mechanic for Honda We use cookies to give you the best possible experience on our website.

What happens when the Check Engine light goes out in a Honda?

If the engine doesn’t start, turn the key on. The check engine light will come on for two seconds and go out. You should hear the fuel pump run during the two seconds. When the light goes out, you should hear the main relay click.

Why does my car stop at a stop light?

When stopped waiting at a stop light, the engine RPMs will drop a bit and it sometimes stalls out. This is a common sign of a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and…

When do I stop at red light RPM drops?

But when i stop at light rpm drop to 500. And feels like its going to shit off. My car has 80455 miles. My car has an automatic transmission. This may be a sign of a failing idle air control valve.

What should I do if my Honda check engine light is not working?

Check to see that all electronics in the vehicle are working properly (e.g. dash light, 12-volt power supply, interior lights). If everything is working properly, I would either test all the fuses (using a test light or a voltage meter is the fastest way to do that) or return the vehicle to the person who did the work. 5.

When does the low coolant level warning light go out?

When you start the engine, the low coolant level light should come on for a second or two and then go out. If it doesn’t go out, either the coolant level is too low or there is a problem with the sensor system.

What to do about Honda Civic engine hesitating?

A few simple fixes suitable for the novice mechanics might be enough to rid your Honda Civic or Accord of that annoying low-RPM hesitations forever. This article applies to the Honda Civic/Del Sol (1992-2000), and Accord (1990-2002).

Why is the Check Engine light on on my Honda?

A simple mistake in servicing these systems can cause a poor idle. And if your check engine light (CEL) is on, this may also indicate that a sensor might be bad, causing the engine to compensate by automatically adjusting the idle or air/fuel mixture.

Why is my Honda engine hesitating at idle?

If you have cleaned the throttle body and there is proper air flow, move on to the following step. Vacuum leaks can cause a lean fuel mixture by allowing too much air into the intake. To compensate, the engine computer will enrich the mixture, causing uneven or surging idle.

What kind of car is a 1995 Honda Civic?

Description: Used 1995 Honda Civic LX. The 1997 Honda Civic! It just arrived on our lot this past week! This 4 door, 5 passenger sedan provides exceptional value! Top features include a split folding rear seat, 1-touch window functionality, front bucket seats, and much more.

Where can I buy a 1997 Honda Civic?

Description: Used 1997 Honda Civic LX. This car is scheduled to go to auction in 30 days. It is being offered: “INSPECT OR REJECT””AS IS””WHERE IS””NO WARRANTY”Pay by Cash or CheckVehicle located at Haley Toyota 1530 Courtland Rd. Roanoke, Va. Call 540-345-1666.

Where can I buy a 1990 Honda Civic?

Great Gas Mileage: 35 MPG Hwy. WHY BUY FROM US: FIND NEW ROADS at All American Chevrolet of San Angelo! San Angelo Chevy offers brand new Chevrolet models including, the Silverado, Equinox, Trax, as well as an extensive used vehicle inventory.

Is there a problem with rough idle when warm up?

So, once there’re visible signs of rough idling, trouableshoot the problem without causing any further delay. As reported by Car From Japan experts, most Makes getting this engine rough idle after warm up are: Though the problem is not common but drivers of the Makes had their car serviced at garages for Rough Idle When Warm.

Why does my car idle when it is warm?

When the cars idle gets rough, it hard to comprehend the related causes. It is because rough idle when warm can either be caused by one faulty component or through series of problems. Hence, after knowing the ways to troubleshoot rough idle when warm problem, anyone can now keep a check on their vehicle’s status.

What should the idle speed be on a Honda Civic?

Turn off the car. Reconnect the IACV, and reset the ECU by unplugging the back-up fuse. Restart the engine, and the idle speed should be in the 620 to 720 rpm range. Replacing the entire throttle body is probably the best option if this is the case, but that’s an expensive fix.

What causes a lumpy idle on a Honda Civic?

A failing IACV will result in a hunting idle (where the revs go up and down without accelerator input) or a lumpy idle (where the idle will fall until the ECU compensates and rises it again repeatedly). To fix this, either replace the IACV or clean it. Figure 2. Idle air control valve

How can I tell if my Honda Civic has a vacuum leak?

The easy way to find out if there is a vacuum leak is to spray the hoses with starter fluid or brake cleaner. Make sure this is done on a cool engine. If any of the hoses are cracked or not sealed correctly, they’ll suck in the vapor and the car’s idle will change. This should help you find the general location of a leak.

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