Question about 1991 Honda Accord

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1991 honda accord lx getting bad gas milage

Failed emissions replaced exhaust gas recirc valve but still getting about 26 miles to gallon.the egr vv. fixed emissions problem.

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I have known when the distributor starts to go bad it will not fire 100%, that could cause your failure in good gas mileage!

Posted on Jan 20, 2009

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How do i set the idle on my 1991 Honda Lx so it will pass emissions


should be a idle screw on the throttle body. right next to the accelerator cable. also make sure your cable isn't pulled tight keeping the accelerator opened slightly for a high idle

Oct 15, 2014 | 1991 Honda Accord

1 Answer

Possible ecu problems


Usually it's the solenoid that supplies vacuum to the EGR that fails. Trace the EGR vacuum supply line back to the solenoid and test it to make sure it clicks, allowing vacuum to flow to the EGR valve. If it doesn't click when current is applied to it, replace it.

Aug 06, 2012 | 1993 Honda Accord

1 Answer

What does the egr vavle have to with the fans


Should have noting to do with the fans.
EGR is Exhaust Gas Recirculation. Without getting too technical, The EGR opens at cruising speeds and adds a small amount of exhaust gas to the intake manifold. From there it gets back into the combustion chambers to lower their tempatures thus lower emissions.

Sep 27, 2011 | 1991 Honda Accord

2 Answers

Water pump went out on my 96 Honda Accord EX 2.2L VTEC. I replaced timing belt, balancer shaft belt, water pump, both serp belts, and tensioner according to manufacturer specs. Put everything back together...


A bad EGR valve could cause your car to experience hard starting, a rough idle, cruise control surges, popping noises from the exhaust, backfiring and sudden engine stops with cold weather or after deceleration.
Read more: Symptoms of a Bad EGR Valve ' eHow.com http://www.ehow.com/facts_5980898_symptoms-bad-egr-valve.html#ixzz1NDPE0WZk

May 23, 2011 | 1996 Honda Accord

2 Answers

My 1997 Honda Civic failed it's Emissions Test. See below the ASM Emission Test Results. What do you suggest I do to get the car to pass the smog test? ASM Emission Test Results: 15mph - RPM = 1587...


Jose, I don't know if this will give you the answer you are looking for because there are many things to consider here. The exhaust gas recirculation valve (EGR) is one of the main things involved in reducing NO emissions. This valve is controled by the power control module. (PCM) This is your vehicles computer. The PCM monitors the vehicles speed and will command the EGR to open when the vehicle attains a certain speed, which is why the ASM test being done is recorded at two different speeds. At 25 MPH your vehicle failed the hydrocarbon (HC) emissions limit and this could be for a number of reasons. When is the last time you car was tuned up? Old spark plugs, wires, clogged air filters, oxygen sensors, leaking injectors (personal experience) or the PCV valve could be contributing to the results of the test. I guess that the easiest way to go is to tune up the engine replacing the spark plugs, wires, air filter and the PCV valve and don't forget to have the oil changed at the same time. Only then should have the vehicle retested and see what the results are. Should it fail again you may have to consider having the EGR or the catalytic converter replaced depending on what portion of the test fails. If the NO fails I would consider the EGR. If the HC fails then I would consider the catalytic converter. Good luck with this.

Apr 05, 2011 | 1997 Honda Civic

1 Answer

My car turns off when i start slowing down or when im pressing on the break, i tested it and it gave me 2 numbers a P1491 and a P1456 my car is a 99 honda accord ex, a 4 door.


P1491 = Exhaust Gas Recirculation (EGR) Valve insufficient lift.

P1456 = Evaporative emissions (EVAP) control system leakage (fuel tank system).

Check the EGR valve for a failed vacuum diaphragm. Check the fuel filler cap to make sure it is the correct factory style, has a good check valve and is on tight.

Feb 26, 2011 | 1999 Honda Accord

1 Answer

1991 Honda Accord LX failed EVAP test. The ASM Emission Test Results showed Test 25mph RPM 1933, %C02 MEAS 14.60, %02 MEAS 0.22, HC (PPM) MAX 61, GP 236, MEAS 19, CO (%) MAX 0.60, GP 2.10, MEAS 0.02, NO...


Things to consider or replace...

If you are getting a Check engine Light let me know, it will make things easier to diagnose.

Catalytic Converter
Oxygen Sensor
EGR Valve

May 17, 2010 | 1991 Honda Accord

2 Answers

Check engine light comes on and off, auto zone test read back EGR flow insufficient/manufact.specif.DTC/see service manual.what does any of that mean?HONDA ACCORD 4CYL.2001


The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. When the EGR valve goes bad, it must be replaced.

The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine. The exhaust your EGR valve recirculates also prevents the formation of Nitrogen related gases. These are referred to as NOX emissions, and are a common cause for failing emissions testing. Unfortunately, your EGR valve can get stuck, causing NOX gases to build up. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on acceleration.

Here is a picture of where the EGR Valve is located (Accord 1999). Replacing it is fairly simple and straightforward. A vacuum line and a couple of bolts. You'll see what you have to do when you look at it.

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If you are replacing the EGR Valve due to the Check Engine Light (MIL) being on with a DTC P0401 then I suggest contacting your Honda Dealer. There was a Product Update Campaign (PUD) in the fall of 1999 that corrected the problem.

Another times, the clean is the solution...I hope help yoiu with this. Good luck, and remember rated this help.

Sep 03, 2009 | 2001 Honda Accord

1 Answer

92 Honda Accord failing Emissions


look at oxygen sensor.look at egr control solenoid.

Apr 10, 2009 | 1992 Honda Accord

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