How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Skyvisions Your Own Question

Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 13077
Experience:  Toyota Master Diagnostic
8257649
Type Your Toyota Question Here...
Skyvisions is online now
A new question is answered every 9 seconds

Toyota T100: I have a 1994 toyota t100 with a 3.0 liter v6.

Resolved Question:

I have a 1994 toyota t100 with a 3.0 liter v6. The other day the truck started losing power and just shut off and would not start back up. The engine turned over just fine and there was plenty of gas. Once I got the truck home I changed the rotor, cap, spark plug wires, and spark plugs. Once that work was complete the truck finally started. It starts hard and runs rough once you come off of idle. I checked my plug wires and made sure that they are wired properly. I'm not sure what to do to fix this, what should i check next.
Submitted: 1 year ago.
Category: Toyota
Expert:  Skyvisions replied 1 year ago.
Thank you for choosing JustAnswer and allowing me to help you resolve your Toyota questions! Have you checked the cylinder compression or have you checked for any malfunction codes that may be set in the computer? How many miles are on the truck?
Customer: replied 1 year ago.

I have not checked those items. The truck was running fine and just stopped. Once I replaced the items I mentioned i got the truck running but is still starting hard. It kindof sounds like it's timing or a couple of sparkplug wires are crossed. I checked the wiring and it is correct.

Customer: replied 1 year ago.

it has approximately 230K miles of the truck

Expert:  Skyvisions replied 1 year ago.

The reason for running a compression test is to confirm whether not you have at least 170 PSI. If the timing belt jumps time it will cause it to run difficult and almost seem like the plug wires are crossed. If the belt jumps time the compression will drop. Did you check for any malfunction codes that may be set in the computer?

Customer: replied 1 year ago.

No i do not have a scanner that will connect to this year of truck. Sounds like i need to take it to the shop and have them check the codes, compression, and possibly replace the timing belt.

Expert:  Skyvisions replied 1 year ago.
You do not require a scan tool to check for codes. All you need is a jumper wire. When the key is in the on position locate the diagnostic check connector box over by the battery and fuse box. Open the lid of the DIAG box and inside the lid you will see a map of the pins. Place a jumper wire in the pins marked TE1 and E1. Monitor the check engine light. If there is a code 12 for example the check engine light will flash one time then two flashes. After a 3 second pause the system will repeat itself. Let me know if this something that you can do. A small paperclip will work in place of a jumper wire or cheap speaker wire.
Customer: replied 1 year ago.

ok, give me a few minutes

Customer: replied 1 year ago.

It shows code 14

Expert:  Skyvisions replied 1 year ago.
If you remove the negative battery cable for about 5 min. then reinstall it turn the key to the on position with the jumper wire in the terminals as I described does the light flash steady and continuous? Then try and start the vehicle and let it run for a little bit while running rough turn the key off then repeat the process then recheck for codes does the code 14 come back?
Customer: replied 1 year ago.

I'll get back with you once I completed this.

Expert:  Skyvisions replied 1 year ago.
ok
Customer: replied 1 year ago.

I followed your instructions, after the first time i disconnected the negative side of the battery for 5 minutes and then reconnected it, i turn the switch on the the check engine light flashed continuously, i started the truck and let it run for a few minutes, once it comes off of idle a little it started running rough, i then disconnected the negative side of the battery for 5 minutes and check for codes. The check engine light is still blinking continuously.

Expert:  Skyvisions replied 1 year ago.
Just a little clarification I need you to get the vehicle to run rough for several key cycles do not disconnect the battery once the code was cleared. By the light flashing steady and continuous this means the code was cleared I'm trying to see if the code will reset after one or two occurrences of the vehicle running rough do not disconnect the battery cable any further and re-check for codes.
Customer: replied 1 year ago.

ok, I will let it run rough for for a couple of minutes, turn it off and do it again right?

Expert:  Skyvisions replied 1 year ago.
That is correct were trying to see if that code 14 is the current problem or was it set due to a previous malfunction which theoretically should cause the vehicle to not run at all. But in some cases I have seen where it will cause it to run rough. I'm just trying to get you to duplicate the code 14.
Customer: replied 1 year ago.

I let it run rough for a few minutes, turned it off and did it again. During both times the check engine light blinked continuously. I noticed the O/D off light was blinkly faintly.

Expert:  Skyvisions replied 1 year ago.
The overdrive light will flash also when the jumper wire is installed. Remove the jumper wire and allow the vehicle to run rough over couple of different drive cycles or key on and idling rough situations then reinstall the jumper wire turn the key on and see if the check engine light continues to flash fast.
Customer: replied 1 year ago.

ok, the light continues to flash

Expert:  Skyvisions replied 1 year ago.
One of two things has to be happening here. Either the vehicle has an issue with the timing belt and the compression is low causing the rough idle and difficult to start or the code 14 is an intermittent problem and is unrelated. The code 14 means the computer did not see ignition confirmation or the ignition trigger did not get sent to the igniter. Typically when a code 14 is set you will not have any response from the engine at all other than crank and no start. The code 14 will eventually have to be dealt with. This could be anything from a bad igniter to possible problems in the wiring. It is difficult to diagnose the circuit without an oscilloscope. Without being able to run specific tests such as compression test and checking the timing between the cams in the crankshaft i.e. the timing belt it is difficult to say what exactly is going on here. It's always best to know one's limitations. Let me know how you'd like to proceed.
Customer: replied 1 year ago.

could it be the fuel filter or fuel pump

Expert:  Skyvisions replied 1 year ago.
With the mileage that you have on there it's possible that the fuel filter has never been replaced it could be restricted. Likewise it the fuel pump is not pushing enough pressure it will cause it to idle rough and hesitate severely. The only way to know for sure is to pull the fuel pressure line off and see if it is putting out volume then check for pressure. It should be right around 40 PSI. Anything below 30 PSI and you will start to have difficulties. even with the kind of mileage that you have on this these pumps are not normally an issue. I would be more suspicious of the timing belt jumping time.
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 13077
Experience: Toyota Master Diagnostic
Skyvisions and 6 other Toyota Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
< Last | Next >
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    167
    ASE & Bosch Master Tech. 30 years experience.
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    Toyota Technician

    Satisfied Customers:

    1132
    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • http://ww2.justanswer.com/uploads/CA/caprio23/2014-4-30_201741_20121205122939.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    373
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    9
    Toyota tech. ASE Certified Technician
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    11403
    Toyota Master Diagnostic
  • http://ww2.justanswer.com/uploads/genchigenbutsu/2009-05-09_003043_cimg16431.jpg Genchi Genbutsu's Avatar

    Genchi Genbutsu

    Toyota Master Technician

    Satisfied Customers:

    3425
    Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine
 
 
 

Related Toyota Questions