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  • help engine light and goes into limp mode

    Hi there

    im having an issue wih engine light coming on and limp mode the first time it happened was when stopped in traffic last month the second time was the other day stopped at traffic lights both times, turn engine off and on again and all good. I did an error code read and it is code 19, repair manual says..... throttle position switch or throttle pedal position sensor $1200 my question is where is the throttle position switch and has anyone had any experience with this problem as it seem like it will be hard to pin point being intermittent.

  • #2
    Had exactly the the same problem on my 120. It was just dust in the accelerator position sensor. Toyota cleaned it for me and it hasn't been a problem since. Not familiar with the 95 series but the tps should be on your throttle body. Black plastic with a heap of wires coming out of it. You can get both for a lot less than $1200 if you don't go through toyota as well. There ripoff merchants..;-)
    Hope this helps
    [SIGPIC][/SIGPIC]
    The road less travelled is definitely the best road to be on

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    • #3
      thanks Shangus i called toyota they said bring it in tomorrow and they will put they computer on it and see what shows up.

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      • #4
        I had the same problem with my 95 when I bought it. Turned out to be the Common Rail Sensor.

        Comment


        • #5
          Originally posted by jayden View Post
          thanks Shangus i called toyota they said bring it in tomorrow and they will put they computer on it and see what shows up.
          Someone may correct me, but if it is an Oz 90series (I assume coz that's where you posted) there is no body computer, only ECD?. Their computer will only give you what you already know: code 19.
          Don't let them charge you a bomb for "diagnosis" then launch on a parts changing frenzy without checking all the basics like connectors and earths first.
          Have you got the Toyota service manual for the testing procedure? It has a heap of tests you can do with a multimeter if you are comfortable doing it.
          cheers
          Steve

          PS everyone, you probably need to post your exact model (eg yr2000 KZJ95) and location because we are getting posts from all over the world, plus imports, and the configurations vary from country to country. In these diesels there were changes around year 2000 as well.
          t303
          Senior Member
          Last edited by t303; 28-03-2018, 08:13 AM.

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          • #6
            Had a similar problem. Eventually found it to be a faulty Common Rail Sensor.

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            • #7
              Just did an oil change on my 95 with a 1KD-FTV motor. (Japan model). I had also purchased an endoscopic camera so as to check the oil pick-up screen. However the camera cannot get to the screen as the sump is very close. So I used a piece of wire and scraped along the bottom of the sump to check for any sludge.

              Has anyone had an experience with checking for sludge? I thought it would be easy to check the screen but it is impossible. Would the wire check be sufficient???

              VB

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              • #8
                Hey peeps, I've also fallen victim to the dreaded Check Engine light + Limp Mode. I'm going to attempt to replace the TPS (and when that happens I'll get the throttle assembly cleaned as well).

                I've got a 2000 90 Series - KZJ95R-GKMNTQ with 1KZTE diesel engine with manual transmission, HOWEVER, I have had a hell of a time with this, so hoping this can save you some time.

                The full model number of my vehicle is KZJ95R-GKMNTQ - this is super important as there are a lot of parts for KZJ95Rs, but you need the corresponding complete model number in order to find the correct part!

                For my vehicle, Toyota does NOT sell the TPS by itself, it only sells the entire throttle assembly (for an insane $900). They refer to it as a Venturi, diagram here: https://partsouq.com/en/catalog/genu...&uid=366481&q=

                When looking for a replacement TPS module by itself, it turns out there are a bunch of TPS modules that claimed to be compatible with my vehicle - NONE of them actually are compatible. INCOMPATIBLE TPS PART NUMBERS: 89452-22080, 89452-22090

                The only solution I've been able to come up with is to find a wrecked Prado and salvage the TPS module off the wreck. I believe I've found a model that's compatible - 2001 Prado 1KZTE with automatic transmission, model number will hopefully be KZJ95R-GKPNTQ, wrecker is looking for $125 for the TPS module.

                It looks like some 1KZTEs from 1999-2002 will have compatible Venturis. You need to cross reference the FULL model number of the donor vehicle against yours and hope the assembly part number matches for both FULL model numbers (by FULL I mean KZJ95R-GKMNTQ, you can't just go off KZJ95R). You can use the link above to find your specific model number and compatible part numbers. It looks like Toyota modified their design at some point, as with some other models of the 1KZTEs you can get a replacement TPS module by itself.

                Wish me luck, picking up the part this weekend.
                venturi with TPS highlighted
                Venturi with TPS module highlighted

                Comment


                • #9
                  Originally posted by mattkirkey View Post
                  Hey peeps, I've also fallen victim to the dreaded Check Engine light + Limp Mode. I'm going to attempt to replace the TPS (and when that happens I'll get the throttle assembly cleaned as well).

                  I've got a 2000 90 Series - KZJ95R-GKMNTQ with 1KZTE diesel engine with manual transmission, HOWEVER, I have had a hell of a time with this, so hoping this can save you some time.

                  The full model number of my vehicle is KZJ95R-GKMNTQ - this is super important as there are a lot of parts for KZJ95Rs, but you need the corresponding complete model number in order to find the correct part!

                  For my vehicle, Toyota does NOT sell the TPS by itself, it only sells the entire throttle assembly (for an insane $900). They refer to it as a Venturi, diagram here: https://partsouq.com/en/catalog/genu...&uid=366481&q=

                  When looking for a replacement TPS module by itself, it turns out there are a bunch of TPS modules that claimed to be compatible with my vehicle - NONE of them actually are compatible. INCOMPATIBLE TPS PART NUMBERS: 89452-22080, 89452-22090

                  The only solution I've been able to come up with is to find a wrecked Prado and salvage the TPS module off the wreck. I believe I've found a model that's compatible - 2001 Prado 1KZTE with automatic transmission, model number will hopefully be KZJ95R-GKPNTQ, wrecker is looking for $125 for the TPS module.

                  It looks like some 1KZTEs from 1999-2002 will have compatible Venturis. You need to cross reference the FULL model number of the donor vehicle against yours and hope the assembly part number matches for both FULL model numbers (by FULL I mean KZJ95R-GKMNTQ, you can't just go off KZJ95R). You can use the link above to find your specific model number and compatible part numbers. It looks like Toyota modified their design at some point, as with some other models of the 1KZTEs you can get a replacement TPS module by itself.

                  Wish me luck, picking up the part this weekend.
                  venturi with TPS highlighted
                  Venturi with TPS module highlighted
                  So why not just buy the part you listed from partsouq? Its under 400 bucks.
                  Toyota 2610067100 VENTURI ASSY 2-3day delivery $397.92 AUD

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                  • #10
                    Because they're not available? Unless you have a source that I'm aware of? If you did, that would be ace!
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                    • #11
                      Hey Matt, humour me here and check over all the wires around your engine bay, particularly where they aren't wrapped in the black plastic shielding tube. Start by examining the wires where they enter the back of the connectors at the TPS. Also up behind your accelerator pedal. Look for fine splits in the wiring insulation. These splits can change resistance values and cause all kinds of gremlins in your electrical system and are hard to spot. (I've just been through this recently with my TCV wiring).

                      Make sure the weight of your harness is supported correctly in the engine bay and not pulling down and bending all the wires at the connectors.

                      Just a thought...

                      Comment


                      • #12
                        Originally posted by SamSta View Post
                        Hey Matt, humour me here and check over all the wires around your engine bay, particularly where they aren't wrapped in the black plastic shielding tube. Start by examining the wires where they enter the back of the connectors at the TPS. Also up behind your accelerator pedal. Look for fine splits in the wiring insulation. These splits can change resistance values and cause all kinds of gremlins in your electrical system and are hard to spot. (I've just been through this recently with my TCV wiring).

                        Make sure the weight of your harness is supported correctly in the engine bay and not pulling down and bending all the wires at the connectors.

                        Just a thought...
                        hey mate - thanks for the recommendation. I took a look at the wiring around the TPS module, looks good. The accelerator looked okay as well, but when I lowered the panel underneath the steering wheel I found wires going all over the shop. I assume it was to add in a bunch of extras (front spot lights, additional 12V plugs, trailer brake controller, anderson plug points, etc). So I reckon I'll bit the bullet and take it into an auto electrician to try and diagnose it before I drop cash on parts that may not fix the problem.

                        Comment


                        • #13
                          Originally posted by mattkirkey View Post

                          hey mate - thanks for the recommendation. I took a look at the wiring around the TPS module, looks good. The accelerator looked okay as well, but when I lowered the panel underneath the steering wheel I found wires going all over the shop. I assume it was to add in a bunch of extras (front spot lights, additional 12V plugs, trailer brake controller, anderson plug points, etc). So I reckon I'll bit the bullet and take it into an auto electrician to try and diagnose it before I drop cash on parts that may not fix the problem.
                          It's quite common to find a birds nest of wires in that spot under the dash for the reason you pointed out as there's a fuse box handy there also. Also people tap into the cigarette lighter sockets so they have 12v when the Ignition comes on. That's what mine looks like from installing a bunch of things but I made an effort (this time) to label them all as I soldered them so future Sam would know what they were haha.

                          If you can find out what the Resistance are for the TPS, you should be able to test it with a multimeter yourself and at least rule that out. I swear I saw a conversation about this on some forum on the web (maybe the surf forums?) Where someone shared the correct resistance's. Maybe do a bit of a Google for it and see what comes up? Failing that, yeah auto elecy could be next.

                          Comment


                          • #14
                            Originally posted by SamSta View Post

                            It's quite common to find a birds nest of wires in that spot under the dash for the reason you pointed out as there's a fuse box handy there also. Also people tap into the cigarette lighter sockets so they have 12v when the Ignition comes on. That's what mine looks like from installing a bunch of things but I made an effort (this time) to label them all as I soldered them so future Sam would know what they were haha.

                            If you can find out what the Resistance are for the TPS, you should be able to test it with a multimeter yourself and at least rule that out. I swear I saw a conversation about this on some forum on the web (maybe the surf forums?) Where someone shared the correct resistance's. Maybe do a bit of a Google for it and see what comes up? Failing that, yeah auto elecy could be next.
                            Yeah, booked in at the auto elec, although the earliest they can get me in is end of August when I'm overseas, so they'll have a look Sept 20 (!!). All my electric (and camping) gear is in storage in Melbourne where we're headed to in November, so will just have to ride it out until then.

                            Comment


                            • #15
                              Hey everyone - update on the limp mode issue.

                              Finally got it checked out by the auto electrician. Initially, he narrowed it down to either a faulty TPS, OR an issue with the Throttle Wide Open Closed Sensor. Turns out there was an issue with the rubber on the Throttle Wide Open Closed Sensor, and after replacing it with something made out of plastic, he was able to stop the issue from happening. Apparently every so often there would be a false signal from the sensor indicating the throttle was wide open, even though the vehicle was idling. If it signalled too many times in a short succession, it would then cause the vehicle to go into limp mode (hence the inconsistency). Technically could (should?) have replaced the small sensor, but with as it is it's better than the original spec.

                              Thanks everyone for the advice, especially to SamSta - saved me a heap of money in replacing the TPS which wouldn't have resolved the issue in the first place!

                              Comment

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