Question about 1989 Toyota Pickup SR5

1 Answer

Wont pass emmissions high carbon

Lugs at low r.p.m.

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 62 Answers

There is a myrian (variety) of problems that your toyota could have. Based on the high carbon readings, you are not efficiently burning the fuel. Could be any of the following, dirty injectors, poor compression, bad spark, vacuum leak, timing issue, etc.
I would replace the plugs, clean the air filter and see if the problem persists. If it does, you might want to take the car to a mechanic if you're not good with auto repair. If you are decent with auto repair inspect all the interior of the engine and try to focus on combustion related items, i.e. fuel, spark, air, intake and exhaust. Please repost with more detailed description of car and recent/old repairs to help me better understand your situation.

Posted on Nov 03, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How to pass emissions test?

Are all the error codes ok? Sometimes a minor code will not cause a "check engine" light on the dash. If the ignition system is marginal it will continue. The results of the emmission test help diagnose. Usually Nox is too high. It's usually caused by a very high temp combustion temperature. Carbon buildup in the cylinder may cause. If the cooling system is marginal, it may contribute. Some advocate a decarbonizing effort. Double check all your connections, cleaning and scraping to bright metal may help. I found a disconnected ground wire. It seemed to make the difference between pass and not.

Mar 26, 2015 | Cars & Trucks

1 Answer

How can you help me with my car to pass emmissions

when you take the car back for emissions test, try this trick. keep in a lowish gear with high revs when you take it. 9 times out of 10 this will work long enough to get it through the test

Nov 27, 2017 | 1999 Ford Contour

1 Answer

Not high enough voltage on vehicle

Go to Autozone and they will test your battery and alternator for free,only takes a few minutes.

May 07, 2013 | 2000 Chevrolet Suburban

1 Answer

I have an 2003 Mk 4 Golf GT TDI 150, Intermittently when I start it up, it will tick over but will not rev at all.

I had a similar problem - engine would run at only low rpm. I suspected fuel starvation from a clogged fuel filter, but it turned out to be a carbon-fouled intake manifold. Depending on how yours was driven (lugging?) and the total mileage (high), I would check the manifold for carbon builup. Cleaning the manifold is difficult or very expensive, as it should be removed and baked out. There are probably several other possible causes that I, fortunately, have not experienced.

Dec 03, 2011 | 2003 Volkswagen Golf

1 Answer

Saturn 2000 SC1 failed emission test high NOX, put new spak plug & wires, new air filter, changed oil and added injector cleaner to tank, anything else I should do to pass the Emission test. Thanks

I'd change fuel filter, get it low on fuel. Add a bottle of rite aid 100% rubbing alcohol. Nothing fancy. Nothing scented or colored.

Add it and fill up your tank of gas.

I've done this with old cars and trucks.

Most recent was my 77 for highboy. Emmissions guy said it's emmissions were lower then most cars he saw! Let alone and old crappy ford.

If it were my car I'd drive it hard the whole way there. This may or maynot break loose carbon buildup in your cats, which will also help. By drive hard I mean higher Rpm then usuall. Don't race it, or drive dangerous. Just trying to get *** much pressure buildup in the exhaust to knock some of that **** out of there.

( been building cars for 10 years daily. You'd be suprised what little things will do to help) goodluck to you.

Oct 17, 2011 | 1993 Saturn SC1

2 Answers

My 1996 Nissan Altima has had the Oxygen sensors and EGR valve replaced. It needs to pass emmissions test but evan after driving it fo rover 500 miles the The ECM will not reset eventhoughtthe fault codes...

Putting miles on them wont reset the computer. It is how many times you cycle the key on and off. And they will only reset if the problem was fixed. I don't know how many times yours has to be cycled, but some vehicles are up to 100 times. Hope this helps.

Jan 22, 2011 | Nissan Altima Cars & Trucks

1 Answer

Can't get 95 cavalier to pass emissions with high nox already changed egr valve now what can i do?

The catalytic convertor could be the issue. A car in bad need of a tune-up won't usually pass smog, either. High emmissions is caused by either a bad cat or unburnt fuel. Start looking at the ignition system (spark plugs, plug wires) and give that thing a tune-up.

Mar 05, 2010 | 1996 Chevrolet Cavalier

1 Answer

Emmissions problem 1993 saturn sc1 dohc

the car is older that 1996 there for you dont need emissions testing. if you wish to pass, check the carbon canister and the egr valve. if the temp gauge says the cars not over heating and the engine doesnt appear to be hot, dont worry about it.

Feb 06, 2010 | 1993 Saturn SC1

1 Answer

Oil leak wont pass emmissions

Tune up will not stop oil leak. Find out where leak is and fix it. I never heard of oil leak being part of an inspection? Let me guess...You're in California?

Mar 09, 2009 | 1991 Honda Accord

1 Answer

1987 Maxima- runs rough at low speeds, won't pass 50/15 emmissions test. High speed ok, black smoke from exhaust when starting after stall at low speeds.

check your injectors.use a ohm meter and check resistance. 1987 maxima reading is somewhere between 10.1-14.2 ohms. if out of spec, replace. Also check your air flow meter and air box, make sure its all clean in there. good luck. post results.

Aug 09, 2008 | 2003 Nissan Maxima

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

45 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8826 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides