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99 Tacoma pukes, gags at 2000 rpm

Discussion in '1st Gen. Tacomas (1995-2004)' started by gedeuce, Aug 28, 2018.

  1. Aug 28, 2018 at 4:29 PM
    #1
    gedeuce

    gedeuce [OP] New Member

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    Ongoing problem. Runs great up to 2000 rpm, after which motor heaves, shakes, loses power. Back off to less than 2000 rpm and everything is normal. Have tried it all, including dealer. No solution. Fuel pressure good, pcv o.k., Cat conv o.k., replaced MAF sensor, timing belt o.k., plugs, plug wires and coils good/replaced, timing belt o.k., fuel pump new. No check engine lites on and no codes show. Help before I shoot my truck or myself.
     
  2. Aug 28, 2018 at 4:32 PM
    #2
    Vabunch

    Vabunch Well-Known Member

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    I had a similar problem it wound up being a dead cell in the battery ive seen many things but never herd of a dead cell causing that but sure as shit soon as i replaced the battery it was back at 100 percent
    That was on my 96 tacoma 2.7. It took me a week to figure that out and i found out by accident. Good luck hope i could help
     
  3. Aug 29, 2018 at 8:59 PM
    #3
    Phoneman1

    Phoneman1 Well-Known Member

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    Thanks for posting that up, Ive been troubleshooting basically the same problem, no codes. Took it to the Dealership, which I never do
    and they had no clue. Easy to swap a battery to rule this out. Again Thanks

    Have had 3 friends that are pretty good mechanics, along with myself, nobody has a clue, after checking basically every component
    on this truck. we are stumped. I will be amazed if this is the problem, but the battery is kinda old, but seems to work ok. But looking close at the battery, it looks like by one of the cell there is a small melted spot, very small. wonder if its a dead cell.
     
  4. Aug 29, 2018 at 9:18 PM
    #4
    DrZ

    DrZ Well-Known Member

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    Just check the voltage at the battery after it's sat for a bit. It should be around 12.6 volts. If it's low like 10.5 then you have a dead cell.
     
  5. Aug 30, 2018 at 5:30 AM
    #5
    Phoneman1

    Phoneman1 Well-Known Member

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    Just swapped out my battery, but reading your post, probably not the problem, battery seems to stay
    charged pretty good, but I guess we will see. I will let you know what happens. The one I just put in is a brand new one.

    When you really need the OBD2, it lets you down.
     
  6. Aug 30, 2018 at 6:17 AM
    #6
    vasinvictor

    vasinvictor Junkie

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    gt3582, AEM F/IC, 550s, Transgo, CalTracs, Elocker, 2-4" drop, 255/55r18 street, 275/50r15 Hoosier dr2
    What engine?
     
  7. Aug 30, 2018 at 7:31 AM
    #7
    mechanicjon

    mechanicjon They call me "Jonny Stubs"

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    Fabtech AAL, Billie's wrapped with 880's , Tundra big brake conversion, bully bars and Pioneer DDin Stereo/dvd with exterrnal usb ports. 240K and going strong.
    Do you have an OBD scanner that can log data. The Torque App does.
     
  8. Aug 30, 2018 at 7:37 AM
    #8
    Phoneman1

    Phoneman1 Well-Known Member

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    So, did not help, its a 4.1 2RZ. You know I always read, Dont throw parts at a problem.
    The OBD2 does not help, Toyota Service Tech had no Idea, which I find strange.
    He basically said, its either the Dist or the Igniter ( and this was a total guess ) on his part.
    Dist = 550.00
    Igniter= 450.00
    I always thought that Toyota Mechanics could figure it out, tho its my last place I want to go.
    This is not so.
    Its kinda hard to test the spark when your driving under load, which is the only time it happens.
    And its not like its goes dead, total no spark, lets say it get 1/2 spark for say 1/2 sec. Kinda
    for lack of better words, a Bump. I do have a FSM and have been testing everything I could test
    everything comes up perfect, cleaned every connection on the truck, which were all clean to start with
    So I guess it comes down to , either, Dist....Igniter.....Ecm, and these are expensive to throw money at
    but what do you do.

    Mechanicjon, I have a Atron scanner it does graph and saves, what would I be looking for, everything I see in the live data looks perfect
     
    Last edited: Aug 30, 2018
  9. Aug 30, 2018 at 2:26 PM
    #9
    Glamisman

    Glamisman Well-Known Member

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    they make a stress tester for ignition sytems,
    https://www.amazon.com/Automotive-Energy-Ignition-Spark-Tester/dp/B01MAT7UMW

    loosen the exhaust before the first convertor and take her for a run to "verify" that this isnt an partially plugged exhaust.

    scan the for sale adds on this site and see who has a used distributor/igniter that they are willing to part with reasonably.
     
    Dalandser likes this.
  10. Aug 30, 2018 at 5:43 PM
    #10
    Phoneman1

    Phoneman1 Well-Known Member

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    While under the hood, I happen to look down at the Alternator, Hey another plug I havent checked yet
    Had a hard time removing it, but it finally gave up its position it had held for 23 years. Full of Corrosion
    I had not found any in all the connections I had looked at. I cleaned out with electrical spray cleaner
    Going to let it dry out over nite, snap together in the morning and go for a drive. I have tried to find a
    wiring diagram , to see what those 3 wires feed to, so far no luck. If they have anything to do with the Ign
    I might have just found my problem. Hope, Hope. When you have a strange problem with your truck, you
    Learn alot.
    I have one of those stress testers, but have to admit didnt know it was a stress
    tester, thought it was to see if you have spark, problem is mine only goes crazy under load, I can rev it up in the garage and it sounds great.
     
  11. Aug 31, 2018 at 6:58 AM
    #11
    Phoneman1

    Phoneman1 Well-Known Member

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    Took it for a ride this morning, really thought that plug would have been causing it.
    Same problem, got under truck with my laser heat gun, 285 before the cat
    295 after the cat, truck was idling, basically the same before and after Muffler.
    dont think its a semi plugged exhaust system.
    Darn I thought I had it.
     
  12. Sep 4, 2018 at 11:58 AM
    #12
    vasinvictor

    vasinvictor Junkie

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    Get an adapter at the part store and check your fuel pressure. Also have a look at your harmonic balancer and see if it wobbles, and is lined up with your other pulleys. The crank pulley will walk on you sometime if it's not properly torqued after a timing belt install. (causing your crank sensor to not read properly)
     
  13. Sep 4, 2018 at 12:33 PM
    #13
    Phoneman1

    Phoneman1 Well-Known Member

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    I installed a nice fuel pressure gauge, everything pressure wise is great.
    Harmonic balancer is straight, I had to find my timing mark, and check my timing, so I
    had alot of "alone time" with the balancer :) Timing was perfect, didnt drift around. (much)

    I have a used Igniter coming (wish it would get here). I have a brand new OEM Dist, but I dont
    want to install until I see if its the Igniter, because I want to be able to return (at a loss).

    Talked to a local Toyota repair shop on the phone, he said he could find problem in a hour
    or less. He said these small trucks are simple. Right.

    I guess if the igniter or the Dist dosent work, then We will find out just how good he is.
    Toyota could not find problem after 1 1/2 hours of looking, were doomed.
    Thanks for the input.
     
  14. Sep 4, 2018 at 2:23 PM
    #14
    1997tacomav6

    1997tacomav6 V6 5sp,RegCab,TRD Supercharger,2"pulley,meth

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    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 595,000 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Hella H4 German Rated Headlights HID 55 watt bulbs (MUST DO) 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
    Check two things that might be
    Coils do not always throw a code and if they are failing could be the problem.

    Knock sensor's also and dont always throw a code or carbon tracks

    Check coils 1st
    Both of these items when put under load can fail the engine and at idle they run fine
     
  15. Sep 4, 2018 at 4:24 PM
    #15
    Phoneman1

    Phoneman1 Well-Known Member

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    I actually replaced the Coil. And I have checked the Knock Sensor, I just unplugged it, and the truck had the same
    misses as before, could not tell the difference. But I did get a knock sensor code when it was unplugged.
    I know when I finally figure it out it will be something simple, When its running right, which is 75 % of the time
    it runs really good. It dosent back fire, it just acts like its missing fire to the plugs for like 1/2 sec, maybe
    once, maybe 4 or 5 times in a row, drives me crazy. With all that I have troubleshot, It is still the
    same as when I started, 3 weeks ago.
     
  16. Sep 4, 2018 at 4:38 PM
    #16
    1997tacomav6

    1997tacomav6 V6 5sp,RegCab,TRD Supercharger,2"pulley,meth

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    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 595,000 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Hella H4 German Rated Headlights HID 55 watt bulbs (MUST DO) 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
    How many miles on the plug cables? The OEM have a date stamped on the wires
    so you know how old they are
     
    Last edited: Sep 4, 2018
  17. Sep 4, 2018 at 7:03 PM
    #17
    Phoneman1

    Phoneman1 Well-Known Member

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    Oh about 7 days, after removing old ones, I ohms them out went from 5,000 to 7,000
    they are no good at 25,000. I guess they were pretty good, the old plugs had been in there for
    around 30,000. They were all a light tan, and in really good shape, but now replaced
    with NGK, which is what I pulled out. Its some electrical component thats going out
    slowly. Checked the Signal Generator inside the Dist. Its within specs, check air gap
    on, inside the Dist on the rotor tooth , its perfect at 0.14in. Cant get specs on the condenser
    so thats suspect. When Im driving along, and it starts to happen, if I give it basically full
    throttle it goes away. And its getting worse real slowly. Somewhere on here is a thread with everything I had
    done at the time, a few things have been added, but are not on the list. Search Phoneman1 should
    come up. Thanks for the Input
     
  18. Sep 4, 2018 at 7:42 PM
    #18
    pulldo

    pulldo Well-Known Member

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    Keep us informed,,,,,,,,,,,,, radiator cap maybe?
    J/K but it's almost to that point. Wow, you've got some patience.
     
  19. Sep 4, 2018 at 7:48 PM
    #19
    1997tacomav6

    1997tacomav6 V6 5sp,RegCab,TRD Supercharger,2"pulley,meth

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    97 reg cab, v6 5sp 300hp supercharged, Methonal Injection, 595,000 plus miles, Original Owner
    V6 5sp,RegCab,TRD Supercharger, 2" pulley, methanol injected AC TRD supercharger,(MUST DO) TRD supercharger ported, rebuilt 3 times over 500,000 miles, every 125,000- 150,000 needs rebuild Hella H4 German Rated Headlights HID 55 watt bulbs (MUST DO) 5 speed manual Amsoil for all drive train Smaller 2” pulley,(300hp) (MUST DO) 2004 DESNO fuel injectors, zero ping ping, 2004 side door mirrors Dick Cepek Rims, Michelin tires LTX, ( that last 100,000 miles) Now running Dynopro ATM mud and snow tires KN cold air intake Cat back exhaust with ss exhaust tip, Raised exhaust tail pipe to 2" below body line Optima*dry cell battery,red top Alpine sirius radio, 200 watt amp, focal is165 split door pod speakers Focal door speakers Subwoffer behind seat Viper alarm, Electric Locks Dark tinted windows, 4runner bucket seats, Tacoma Rubber floor mats TRD fender extenders, Bilstien shocks chrome push bar, chrome nerf bars, add a leaf for rear springs trailer iv hitch, electric brake control, Drilled slotted brakes, High carbon steel (MUST DO) EBS green stuff 7000 series pads(MUST DO) TRD engine oil cap TRD stick shift, Rear sliding window 2002 4Runner functional hood scoop cut into Tacoma hood, 4Runner dual overhead map light Gentex Auto dim + Compass + Temp, garage,rearview mirror Corbeau bucket seats Snow Methonal kit stage 2 Champion 3 core aluminum radiator Linex bed liner
    Well the cables can get carbon tracks and sometimes it’s very very hard to see the tracks
     
    TacomaJunkie8691 likes this.
  20. Sep 5, 2018 at 12:43 AM
    #20
    Phoneman1

    Phoneman1 Well-Known Member

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    Yea its almost a perfect setup for a bad plug wire, but they are new.so
    When my New to me Igniter gets here (30.00) , must be coming from the other side of the
    Country. I will pop that on there and see if any change. If I only had a Scope, I could
    throw it on the coil, go for a ride and see if there is a break down. But I dont, so thats
    that. I noticed in the FSM there is a list of OBD2 codes, you get with reg reader, 14 codes
    and if you have a Toyota Hand Held Reader you get a extra 22 codes. Wonder if a better
    OBD2 reader would get these codes. I cant seem to get a answer to that question.
     

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