1997 nissan altima transmission leaks onto catalytic and exhaust
I just noticed smoke coming off the eaxhaust tube,(pass.side of engine),looks and smells like trans. fluid.Also fluid level in tranny going low after driveing only a few miles.Is this a main seal problem? What can I do to fix it myself, if I can?
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need. goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If this condition happens first thing when you start the car, especially in cold temperature(s) climate, you have nothing to worry about; this is normal. It is simply water vapor- a normal combustion byproduct.
Here's what happens: the exhaust manifold is attached to the engine.
The exhaust manifold takes the exhaust from each cylinder and combines it into the manifold.
The exhaust gases then pass through the exhaust pipes to the various components of the after-treatment system which include the exhaust gas recirculation (EGR) system, catalytic converter and the muffler.
Before the gasses reach the catalytic converter however, they pass the oxygen sensor. The oxygen sensor tells the on-board computer what the composition of the gas is, and diverts some of this gas back into the engine via the exhaust recirculation system.
The recirculated exhaust helps keep some of the toxic gasses from entering the rest of the exhaust system.
The recirculated exhaust gasses also cool the engine cylinders, which in turn, decreases fuel consumption.
Depending on the year, make and model of the vehicle, the exhaust gas recirculation system may have an electronic EGR valve or a vacuum-operated valve. The electronic EGR valve has additional parts, including an EGR solenoid.
If the EGR system does fail, you may hear a ping and the vehicle won't pass emissions. If the EGR valve fails in the open position, the vehicle will not idle properly.
When the exhaust gases reach the catalytic converter, it reignites the gases that are not burnt in the combustion chamber so that they are not emitted into the atmosphere.
The catalytic converter creates a chemical reaction, burning the excess gasses and toxic by-products from the engine combustion process.
And in so doing, the catalytic converter changes carbon monoxide and hydrocarbons into water vapor and carbon dioxide (which is its main function.) And that is what you are seeing coming out of your car's tail-pipe!
I suggest replacing your MODULATOR VALVE on the transmission. This valve, under pressure from the engine, controls how the vehicle shifts. It is possible that the valve is good, and you just have a leak in the rubber hose that connects to the valve. I have not heard any issues from the 02' Nissan Altima about the transmission. If the valve is disconnected from the hose, you should notice some smoke either from the transmission, or under the hood by the exhaust.(NOT ALWAYS NOTICEABLE) Second, the automatic transmission has several internal components, that if one fails, can cause a cascade of issues. The TORQUE CONVERTER under cyntrifical force, converts the power from your engine, into a hydrolic pump that feeds the transmission. If this becomes clogged, the transmission will not shift correctly. A transmission flush might cure your shifting issue. During the flush, replace the transmission filter. As if his is clogged for any reason, it will not supply enough fluid to the transmission, and could cause permanent damage to the transmission.I hope this helps. Good luck.
its time to look under the car yourself for a oil leak or even a plastic bag burning on the exhaust you have been checking the engine oil have you checked the transmission fluid level? the trans is on the drivers side i believe
The catalytic converter is located appx. underneath the front passenger's seat, on the exhaust pipe. It's smaller than the muffler and squarish in shape. It bolted onto the exhaust pipe. There is only one exhaust pipe on that car and also only one catalytic converter.
catalytic converter efficiency below threshold bank 1 possible problems are engine coolant temp sensor or o2 sensor not reading properly or front and behind catalytic o2 sensors read similar-- ****** spark timing--damaged or leaking /exhaust manifold/catalytic conv/exhaust pipe. check for leaks or damage to exhaust repair or replace as necessary
is caused by excess fuel that has entered the cylinder area and cannot
be burned completely. Poor fuel mileage is also a common complaint when black
smoke comes out of the tailpipe. Black smoke out the tailpipe is the
least cause for alarm. Excess fuel will usually effect engine
performance, reduce fuel economy, and produce a fuel odor. Some of the causes of excess fuel are a carburetor that
is out of adjustment, a faulty fuel pump, a leaky fuel injector, or a
faulty engine computer or computer sensor. If black smoke is present,
check the engine oil to make sure excess
fuel has not contaminated it. Do not start the engine if a heavy, raw
fuel smell can be detected in the engine oil.
the warning light is for the catalytic converter. if the light remains illuminated then this indicates that unburned fuel has passed into the catalytic converter as a result of an engine malfunction.
Your getting backfires? hmm interesting. Seems like your engine is getting flooded and either purging it out of the exhaust or burning it all at once or both (backfire). Sounds like a leaky engine valve to me.There again the bluish smoke indicates to me thatyou are leaking oil somewhere- bad rings or head gasket maybe, which could cause a loss of compression which could also cause your problems.That rattling from the left/rear side sounds like a bad muffler try kicking the muffler (not hard though) next time you walk by it.