Question about 1997 Toyota Tacoma

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1999 toyota tacoma 4x4 rough idle after engine is warm

I have replaced all spark plugs, coils, wires, tps, and mass air flow sensor. after the engine is good and warm the truck will have a hard misfire. it has no power and gets poor mpg. if anyone knows what my problem might be, please let me know. thanks.

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  • lonnieyates Oct 24, 2008

    YES IT HAS CODES P0300, P0301, AND P0302. IF I CLEAR THE CODES IT WILL STILL RUN ROUGH, BUT IT TAKES ABOUT THREE TO FOUR DAYS BEFORE THE CHECK ENGINE LIGHT COMES BACK ON.

  • Toyota Ed May 11, 2010

    Questions: Is the Check Engine Light on? If so, do you have the DTC code(s)? Please advise.

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I have same problem on 2003 toyota tacoma 2.7L EXACT SAME CODES

Posted on Feb 03, 2011

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Starts and runs fine.....rough runs, when you restart after warmed up


Sorry - I didn't see the vehicle information the first time.

Let me research this - i will get back to you soon.

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My 94 Toyota Camry 4 cyl is running really rough and stalling out once the engine warms up


1. Error Code 24. Intake Air Temperature Sensor.
Solution:
Check the following:
- IAT Connector and wiring.
- Intake Air Temperature Sensor.
- Engine Coolant Temperature Sensor.
- ECM.
2. Rough Idling when the engine is hot.
The following are the reasons due to which the engine can perform bad when it is hot.
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Apr 14, 2014 | 1994 Toyota Camry

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My 2004 toyota tacoma has a rough idling problems and I was told to replace MAP sensor. Now, would it be Mass air flow sensor ? Because I can not locate any info on MAP sensor of this yeat truck


Yes your truck is equipped with a mass airflow sensor (MAF). However, I would not just replace that because its running rough. I would begin diagnostics by first checking to see if there were any trouble codes in the engine to give you a clue as to the rough running condition. I would expect a trouble code to be present to support the descision to replace the MAF Sensor. If no codes are present I would suggest that you get the vehicle tuned up. (Spark plug replacement and throttle body cleaning and I would also suggest removing the idle control valve and cleaning the carbon and dirt out of it. Although what you were told might be correct I dont belive that is where I would start.

Feb 18, 2011 | 2004 Toyota Tacoma

1 Answer

1999 toyota tacoma 2.7L check engine light came on and showed a code for a bad tps. I replaced the tp[s and the truck runs worse.


Sounds like a mass air flow sensor. Sometimes when the TPS is out the MAF throws a code, and Sometimes when the MAF is out the TPS throws a code. They correspond with eachother and its tricky to tell. What kind of problems are you having?

Sep 30, 2010 | Toyota Tacoma Cars & Trucks

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97 buick lesabre 3.8 Idles rough and stalls out.


Fuel injectors go bad on these engines, you can find re manned ones for 30 bucks. If you have an engine light on get that read. Change your coil/wires/plugs also. Is the lower intake manifold gasket leaking coolant yet? You may want to get that replaced also. Check the TPS too (throttle positioning sensor) those will also cause your engine to act up

May 08, 2010 | 1997 Buick LeSabre

1 Answer

96 Tacoma 4x4 2.7 engine cuts out randomly, like its trying to get air or fuel. just installed cold air intake, full tune up, fuel filter, mass air flow sensor, battery cable, hoses, tps(sensor), and...


dont look for air when the car cuts out its most likley spark or fuel when it cuts out ranomly its usually a sensor or relay that is faulty check fuel pump relay and camshaft or crankshaft sensors but first narrow it down to spark or fuel if possible also if check engine lite is on check codes

Mar 26, 2009 | 1997 Toyota Tacoma

1 Answer

No power,


My truck did the same thing. I changed the plugs with the ones the parts store recommended and it still acted gutless. Then I took it to the toyota dealership and they told me the plugs were not the right ones. So make sure you have the right plugs with a couple different parts store. i guess there sensitive and not just any plugs will work. Do it yourself though cause the dealership will rape you. Stevenson toyota in Golden colorado sucks!

Dec 27, 2008 | 1999 Toyota Tacoma PreRunner

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1999 Ford Taurus mechanical problem


Hello,
your problem appears to be the idle control motor located on the air intake manifold it is a small motor that goes bad quite often. Other items that can cause this is a bad /clogged air filter or a tune up (spark plugs and wires), or clogged fuel injectors. to clean the injectors you can buy a container of fuel system cleaner and pour it into the gas tank and as you drive it cleans the system.

Once the fuel system is cleaned via a tankful of cleaner & gas then the idle controller motor would be next on the list to be replaced.

Good Luck !
Rich Lilja

Dec 03, 2008 | 1999 Ford Taurus

1 Answer

I have a 1999 oldsmobile intrigue that is misting a lot. It idels rough, and runs rough. I can still take off it is a little slow, but I can still go pretty fast, but it still mist at the high speeds...


fuel pressure regulator on the fuel rail is probably it or the egr valve is stuck open allowing burnt fuel to flood the intake, im leaning towards the fuel pressure regulator because the o2sensor is probably reading rich or if its reading lean then i would choose the egr valve . good luck

Jul 06, 2008 | 1999 Oldsmobile Intrigue

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