Question about Honda Accord

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I have a 1990 accord, my fuel economy is low, a check engine light turn on, when i accelerate dark smoke comes out the back, any thoughts?

I have a 1990 accord, my fuel economy is low i have tracked it to be 12-13 mpg. a check engine light turn on for my egr, when i accelerate dark smoke comes out the back, any thoughts?

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  • 287 Answers

Yes hook up to a code reader pull out trouble codes and follow steps in trouble shooting tree to repair problem. If you dont have a code reader or scan tool go to a parts store (Auto Zone,Pep boys) they will hook up and read codes out. They will try to steer you in the direction to go or just write down the codes and Google them in your computer and you will get list after list of how to fix the problem.

Posted on Apr 15, 2014

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: buick regal 92 3.8L Horrible fuel mileage

Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.

Posted on Mar 16, 2010

  • 3 Answers

SOURCE: Fuel Economy has dropped dramatically

CHANGE YOUR AIR FILTER!!!! INSTALL A PUEROLATOR OR FRAM AIR FILTER FOR THE MODEL YEAR OF YOUR CAR. I DID THAT FOR MY 2007 CAMRY AND I PROBABLY PICKED UP 3-4 MPGS. THE TOYOTA FILTER MIGHT BE TOO RESTRICTIVE!!!

Posted on Dec 17, 2008

ZJLimited
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SOURCE: check engine light comes on and off, auto zone

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.

Posted on Sep 03, 2009

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SOURCE: have a 91 honda accord. experiencing dramtic

Sounds like your O2 sensor is malfunctioning. When the check engine light comes on, the computer goes into a preset mode bypassing the O2 sensor and that's why it suddenly runs good. Have the O2 sensor checked. You can also have the trouble codes read and they should point you in the same direction.

Posted on Jan 22, 2011

Testimonial: "Thanks, this will be the next thing I check. I have done alot of the work myself then took it to someone else, this was never mentioned as a possiblit"

  • 328 Answers

SOURCE: renault megane 2004 - when

it`s the oxygen sensor
thats why the car is mix fuel/air in wrong ratio generating unburned fuel in form of black smoke and check lights on
you got to change that sensor
i hope my answer was helpful and convince sir .

Posted on May 30, 2011

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2 Answers

Black smoke comes from exaust when I start. Could it overfuel and how can I fix it if its a new carb on my 88 2e 12valve


assuning there is nothing major wrong, get some forte injector and use it as recommended. I once had a renault laguna diesel fail an MOT test, a roadworthiness test that is, on emissions...it was absolutely chucking out black smoke but the engine ran well. I put 2 bottles of injector cleaner in the half full tank and went out for an eighty mile drive revving the engine in the lower gears. I returned to the testing station an hour and a half later and the engine was running perfectly.
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Many things can contribute to low fuel economy, tire pressure, driving style, milage, and state of the servicing.
What sort of milage does the car have?
Has it had a tune up recently?
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Smoking and hesitation when i start it up


check the coolant level. if it is low or empty you have a blown head gasket. On acceleration the leak in the head gasket is causing the rough running and stalling

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Constant black smoke whenever accelerator is used?


Too much gas going through the engine-that's why black smoke. That's all your unburned gas going out the exhaust. Have the fuel pressure tested. A failed pressure regulator will pull extra gas into the engine. Pull off the vacuum hose to the regulator. If any evidence of gas in the hose, the regulator's diaphragm has broken and sucking gas through the hose into intake.
If fuel pressure is correct, have a scan done for trouble codes.

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I have a 90 accord lx/dx.I replaced fuel filter, air filter and now the car won't stay running and once it does start after running it about 2 blocks if you let off the accelerator it putters like...


Have your engine scoped out by a reputable service shop. Was it running better before you replaced those items? Have you done a tune up lately? Did you buy bad gas? Are your fuel injectors clean? Is the fuel pump going out on you? Are your spark plugs and spark plug wires good? Are their any sensors that may need replacing? I have a 1990 Honda Accord and the car just wants to keep taking my money. It needs too much love to keep any more.
Terry

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My 1995 accord ex 5spd oil light flashes but it has recommended amount of oil in it. The manual says its low oil pressure. Do i need a new oil pump? what?


Low oil pressure can be from a restriction in the filter, a weak oil pump or excess clearnance between the crankshaft, camshaft, main and rod bearings. Low oil pressure when the engine has adequate oil means the engine is in need of at least a pump. It may even need an overhaul. My question would be does it run OK not leak or smoke and have good fuel economy. The best case if everything is running fine is that the sending unit is defective.

Mar 19, 2011 | 1995 Honda Accord

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1998 Honda Accord with a engine code(check eng.light) #1259. what do I need to do to fix it. thank you.


The manual for your Accord indicates the following:
This indicator comes on for a few seconds when you turn the ignition switch ON (II). If it comes on at any other time, it indicates one of the engine's emissions control systems may have a problem. Even though you may feel no difference in your vehicle's performance, it can reduce your fuel economy and cause your vehicle to put out excessive emissions. Continued operation may cause serious damage.
If you have recently refueled your vehicle, the cause of this indicator coming on could be a loose or missing fuel fill cap. Check the cap and tighten it until it clicks. Replace the fuel fill cap if it is missing. Tightening the cap will not make the indicator turn off immediately; it takes three driving trips.
If the indicator remains on past three driving trips, or the fuel cap was not loose or missing, have the vehicle checked by the dealer as soon as possible. Drive moderately until the dealer has inspected the problem. Avoid full-throttle acceleration and driving at high speed.
Hope this helps you find the problem.

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I have a 1990 Honda Accord. 5 speed 255,000 mi


you have a sensor acting up on your motor have the code read at any shop for about $25 and they will tell you exactly what sensor is going out and needs to be replaced

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