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Throttle body good job? What else?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by terramir, Apr 5, 2016.

  1. terramir

    terramir Member

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    Okies, cleaned the throttle body and MAF sensor, replaced the HV inverter coolant when my pump failed ( got a used one for 30 bucks), traction battery rebuilt, two successive oil changes 1st regular to clean then valvoline high mileage. Anything else I should be doing? Pictures b4 and after are attached.
    B4
    throttledirtysm.jpg
    After
    throttlecleansm.jpg
    Anything comments ? What else should be done about 180k car :)
    terramir
     
    #1 terramir, Apr 5, 2016
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    Do you have oil consumption? That is the prime reason to use an oil labeled "high mileage"; it has additives to swell rubber components like valve guides. If you subsequently switch back to a non high mileage oil, the guides will shrink, likely more than they swelled, and consumption will accelerate.
     
    #2 Mendel Leisk, Apr 5, 2016
  3. terramir

    terramir Member

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    well in 4.5k miles quite dark and well it was down to the bottom of the stick, and the choice was more about preventive maintenance, no problem sticking with the semi synthetics.
    terramir
     
    #3 terramir, Apr 5, 2016
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  4. terramir

    terramir Member

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    does anyony know of any other things I cann be doing to ensure this car stays with me a long time?
     
    #4 terramir, Apr 5, 2016
  5. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Did you change the transaxle ATF and the engine and inverter coolants?

    How about the iridium plugs, serpentine belt, air filters, struts/shocks?
     
    #5 Patrick Wong, Apr 5, 2016
  6. edthefox5

    edthefox5 Senior Member

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    Why would you install a used pump? You didn't get it cheap and its alot of work to install it. And they aren't covering the pump under a TSB anymore?
    That's a really important pump.


    Also see that hole on the side of the upper throttle body? That's the pcv inlet from the pcv valve. That inlet hole gets really gunked up. Pull the hose off the back of the tb and stick your choke cleaner nozzle in there and blast it clean. Stick a rag in the throat first.
    Don't forget to lubricate the return spring on the butterfly and tighten that 10 mm nut under the air cleaner box that tightens the throat clamp. if loose you'll have un-metered air sneaking past the maf and the car will not run good.
     
    #6 edthefox5, Apr 5, 2016
    S Keith likes this.
  7. terramir

    terramir Member

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    TSB is over and this was actually the TSB replacement lol, as for cheap 30 bucks for a 140 buck part (more like 155 with tax) seems like a good deal, considering that pump dead will disable the car b4 damage.
    I replaced the transaxle fluid when I got it the iridium plugs as well(about 5k ago), serpentine belt is in my plastic thing over the spare, that is next weekends project, back struts were changed approximately 48k ago according to service records so front ones are next on my list tightened that bolt but I didn't to the hose blasting so I assume that's one more thing this weekend. What do I lubricate the return spring with and what is the butterfly? Oh yeah engine coolant how much pink stuff does that take cause at 23 bucks a pop that might need to wait a few more weeks.

    terramir
     
    #7 terramir, Apr 5, 2016
  8. edthefox5

    edthefox5 Senior Member

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    The spring is on the butterfly stem the butterfly is the brass flap in the tb bore. Its the big spring wrapped around the end of the butterfly stem. Its on the left of the tb as you look at it. Its the return spring. I like CSP Spray grease sold in Home Depot. I spray it on everything on the car as its an anti corrosion spray. Corrosion Stop Prevention. CSP.

    As far as the pump going bad yes it disables the car because the Inverter has overheated so bad from lack of coolant it crowbars itself...shuts itself off which kills the car in its tracks. No limping on battery. Not good and a freaking scary thing when it happens. Plus the beating the Inverter takes from overheating so bad. The Inverter is around $4000 so $30 for a used pump is foolish. There's no warning when the pump fails other than the car going dead and the smell of something burning. Then you get a dashboard full of warnings as you sit on the side of the road. Or maybe in the middle of the road. Great.

    Btw, that pump supply's coolant to the transaxle also so that overheats to.
     
    #8 edthefox5, Apr 6, 2016
  9. terramir

    terramir Member

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    The inverter throws a warning far before it will crowbar itself the design people at toyota are not stupid you can even limp home if you get your butt of the freeway, I got home without serious consequences. You'd have to drive several miles at freeway speeds which the car won't allow it as it noticeably reduces the power levels. I have experience with electric water pumps as I am a pc modder and have used water cooling quite often the pump I bought is in good working order at this time. Performing as expected, the only thing I'm disappointed in that toyota stopped short of adding a temperature controller seeing as the pump can be disconnected behind the inverter, the plan must have been something like a box that only engages the pump as needed then most of those pumps would have lasted the life of the car.
     
    #9 terramir, Apr 6, 2016
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