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Relay Assy. The diagram listed above is for your reference. View diagram for your vehicle. Warning: Cancer and reproductive harm - www. Select Vehicle by VIN. This part is a packaged part and contains multiple quantities of: Pack Qty: 4. This part is a packaged part and contains multiple quantities of the same item.

In an effort to simplify packaging Honda will sometimes include multiple parts in a package. Check Fit. Honda Part No. This genuine Honda part is guaranteed by Honda's factory warranty. Genuine Honda Parts, the Right Choice. Your vehicle deserves only genuine OEM Honda parts and accessories. It is sometimes referred to as Honda Relay. Our Honda parts and accessories are expedited directly from authorized Honda dealers strategically located all across the U.

OEM Honda parts are the best for restoring your vehicle to factory condition performance. This part fits specific Honda Accord models. Honda Parts Now is your prime online source with the biggest and best selection of genuine Honda parts and accessories at giant discounted prices.

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Select Your Vehicle. Part No. This part contains hazardous material. This part is a packaged part and contains multiple quantities of: Pack Qty: 4 This part is a packaged part and contains multiple quantities of the same item. Continue Shopping Checkout.The engine computer in your vehicle is a very vital piece of equipment.

Without this part of your car running the right way, it will be nearly impossible for you to operate the vehicle as intended.

In order for this part of the vehicle to operate correctly, it will need the power that the main relay supplies. The main relay helps to ensure that the engine computer gets the power that it needs to run and function as intended. The main relay is usually located underneath the hood in the relay box.

The high heat that this relay is exposed to can create a lot of damage over time. When the main relay begins to malfunctionyou will have to find a way to address the issues in a hurry. Failure to act quickly in a situation like this can lead to a lot of instability. Most car owners take their engine for granted until there is an issue with it. If the engine will not crankthen you will need to get the main relay checked out. If the main relay is not supplying the engine computer with the power it needs, then the engine will not be able to crank and run the right way.

Failing to get the main relay replaced will usually lead to the car being unusable. If the car cranks and then dies almost immediately after, then the main relay may be to blame.

honda main relay conversion

The only way to ensure that this problem stops is by taking the time to get the relay tested and replaced if needed. Having a car that cuts off all of the time can be very frustrating and dangerous in certain situations. Replacing the main relay is the only way to regain the consistency that your vehicle has lost. When the Check Engine Light on your car comes onthen you will need to take the time to have it looked at.

The best way to find out why the light is on is by going in to a shop that has diagnostic equipment. They will be able to pinpoint what issues are causing the Check Engine Light to come. The most popular service booked by readers of this article is Vehicle Engine Electrical Inspection. Our certified mobile mechanics make house calls in over 2, U.

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Fast, free online quotes for your car repair. Schedule Vehicle Engine Electrical Inspection. Service Area. Average rating fromcustomers who received a Vehicle Engine Electrical Inspection. The engine will not start Most car owners take their engine for granted until there is an issue with it. The Check Engine Light is on When the Check Engine Light on your car comes onthen you will need to take the time to have it looked at. Home Articles. The statements expressed above are only for informational purposes and should be independently verified.

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honda main relay conversion

I read couple of yhe reviews sayin it was bigger or didnt match up. I am a honda enthusiast and im telling you it is identical to original in shape, size and even mounting bracket on my civic ex. It has been couple if weeks since installing and working perfect! One person found this helpful. Though in my 94 Integra, there isn't enough play in the wireing to be able to mount the relay in it's original place since it's roughly 3x the bulk and I could not get the connector to reach so I had to tape it to the side wall.Our new search experience requires JavaScript to be enabled.

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Warranty see all Warranty. No Warranty Unspecified Length Condition see all Condition. New Used This is a reference for wiring a K20A into a race car. Incorrect wiring is cause of many problems with engine swaps and you must follow the wiring diagram below. In general you need to K20A engine wiring harness. This is a valid, tested wiring diagram from our race car. Closed loop works correctly. This diagram is the intellectual property of Hondata and may not be reproduced elsewhere.

Any K-series engine can be used with K-Pro in an engine swap. But the transmission will need to be from an Using an transmission will mean that the speedometer will not work, and VTEC will not engage. Do not wire the main relay E7 or fuel pump E1 to 12V. This will damage the ECU. Both E1 and E7 are outputs which switch on relays by grounding the ECU output and do not like being forced to eat 12V.

Do not supply the O2 sensor heater relay with unswitched 12V. It must be a switched power source. Otherwise the relay will latch on and never switch off, so your battery will go flat quickly and the O2 sensor will burn out. Do not supply the main relay with switched power. It must be unswitched power otherwise the ECU will not get backup power via the main relay coil.

Make sure that the intake manifold ground is good. Do not rely on modified or adapted harnesses from any source - most do not work - check the wiring yourself. Introduction This is a reference for wiring a K20A into a race car. Wiring diagram This is a valid, tested wiring diagram from our race car.

You must use the engine harness and oxygen sensor. Notes Important : You must use a main relay. The ECU will not work correctly otherwise as it requires constant power via the coil side of the main relay. There is no way around this, you must wire in a main relay. This cannot be stressed enough. This will smoke the ECU up quickly. You don't need to touch the engine harness. Make sure you feed power from the main relay to all the points in the 20 pin connector - there are three, pins 9,14 and The ground from the engine wiring harness to the intake manifold is critical.

Without a good ground the ECU will do all sorts of weird things. It is better to put the ground on the stud from the cylinder head than the intake manifold.

Honda Main Relay Failures

The brake switch input is not critical. It just idles the engine up slightly at idle. The O2 sensor and O2 sensor heater relay is optional for a race car.Forums New posts. What's new New posts New media New media comments Latest activity. Media New media New comments. Members Registered members Current visitors. Log in Register. What's new. New posts.

Log in. For a better experience, please enable JavaScript in your browser before proceeding. Thread starter civiclxb16 Start date Mar 2, A realy is a switch in a way. There is a low voltage coil that is connected in series with a switch your ignition switch in this case when the switch is closed it energizes the coil and the coil acts like magnet which closes a second set of contacts that act like a switch that can handle a much high load and current.

On a relay a few things can fail, the coil can fry and cause a short and the cooil does work anymore which won't let the secondard contacts function, The second set of contacts can tack weld together and and cease to function. How Stuff works About Relays And to confirm your thoughts if hte main relay fails the car won't start.

Honda No Start? POSSIBLE Main Relay - EricTheCarGuy

Turn your radio off, put the key in the ignition, turn it to the on position, if you listen carefully you can hear the feul pump prime the fuel rail, if you don't hear this noise most likely the main relay has failed.

EDIT: Ahh you beat me too it! Yes if your main relay is bad you car will not start. I don't remember what it is called 2nd click so everything powers up. Edit: second thought it runs fine with the starter fluid being ssprayed in? Refill with reliable gas and make sure all injectors are spraying. Main relay located on drivers side kickpanel under dash. You must log in or register to reply here.

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honda main relay conversion

Accept Learn moreā€¦.This relay actually contains two relays within it--one that controls the power to the fuel injectors and a second relay that powers the fuel pump. Jump to: navigationsearch. If you can't hear the PGM-FI main relay clicking when you try to start up your vehicle, then your problem likely stems from the main relay. Disconnect the battery before working on any part of your Honda CR-V's electrical system. Electrical surges not only can damage surrounding parts, wires and systems and melt nearby plastic, but they also can cause serious shock or burns.

Remove the glove box and passenger's dashboard lower cover. Pull on the right and left glove box stops that keep the box from falling all the way out of the dashboard, remove the bolts and then gently slide the box out of the dash. Remove the screws that hold the lower cover in place and push the top and bottom tabs to unclick the panel from the side. Locate the main relay toward the back of the dash and push aside or disconnect any wires, devices or other relays that block the main relay from view.

Remember to note or diagram the original connections for future reference on a piece of paper. Test the ignition. If Honda CRV starts, reverse the order of Step 3 to put the glove box and dashboard cover back together. When solder on the relay becomes cracked or damaged, resistance can occur in the relay followed by a voltage drop. Repairing soldered joints with a soldering iron could potentially restore a non-working relay and fix your ignition issue without a relay replacement.

Never pull the PGM-FI main relay, or any other relay, in your Honda CR-V by tugging on the wiring attached to the relay socket, as damage to the wiring, socket, locking clip or relay can result.

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