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    2WD Expy 4.6-Slow Acceleration

    Of course! I was planning on doing so, but I wanted to get home first :tongue: The vacuum leak was in the back right side of the throttle body. This was because of a loose screw(no idea how I missed this the first 3 times I checked it) What I did to find this leak was to spray brake cleaner...
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    2WD Expy 4.6-Slow Acceleration

    Just found a vacuum leak. Going to try and fix it! Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    I watched it, but I will check it again to make sure I got the correct reading. Any ideas on the green vacuum hose? Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Alright so I check the vacuum/exhaust leaks and it seems that everything is running fine. The reading was about 19in, but I will check it 1 more time to just make sure I was testing the correct vacuum part. I did notice something about the EGR valve though, and I am not sure what it is supposed...
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    2WD Expy 4.6-Slow Acceleration

    Thanks guys! It was a fresh engine. I will test out the exhaust restrictions today. Might check the plugs too. Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Hey sorry about this. Yes, it does shift, and the RPMS jump up to 4000 When I drive it almost feels like the car isn't getting enough of something... really confused. I have already replaced a lot of things, and still not fixed. What do you think?
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    2WD Expy 4.6-Slow Acceleration

    Wait, you wanted me to go to 65mph with overdrive on, and then go to WOT right away for 3-5 seconds, am I correct? I think I misunderstood that part. Sorry!
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    2WD Expy 4.6-Slow Acceleration

    1) At 65mph its turning right around 1,600 2) it does not down shift 3) when i hit the overdrive off button, it downshifts, car slows down, and rpms jump up 100 or so The tps at closed is 19.22 and open at 93.33. Seems like the closed one is too high Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Yea. I was thinking its the TPS as well. Lets see if stamp as anything to say. Also! Happy 4th of July guys! Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Percent of course^ Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Switches from 19.22 to 93.33 Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    After replacing the bank 2 sensor 2 it seems the problem has been fixed a bit, but not by too much. I was wondering... what should the reading be on the TPS(throttle position sensor) when the intake is closed? I think mine was reading over 20 when my foot was off the gas.
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    2WD Expy 4.6-Slow Acceleration

    Im pretty sure it's called OBDwiz
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    2WD Expy 4.6-Slow Acceleration

    Oh I gotcha! I use a program that installs into a computer, and connects to the car via usb to OBD 2. You get complete details and live monitors. Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Yea Ive been driving it a bit, and it seems like it has gotten better. I just don't understand how the second sensor has much to do with performance? I mean I know it makes a difference, but I didn't know it was that much. Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Alright so more had happened! I checked the o2 sensors and bank 2 sensor 2 was stuck at a constant 0.04 volts... Taking the initiative I thought that meant a bad sensor so I went and picked up a new one, put it and and hooked up the scanner. Now it was changing to numbers between 0 and 0.04 ...
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    2WD Expy 4.6-Slow Acceleration

    Yea it's on. I checked for codes even without it and no codes. Its weird. Ive been doing some research and I think it could be a clogged CAT. I will check the O2 sensors with my scanner to see. Sent from my iPhone using Tapatalk
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    2WD Expy 4.6-Slow Acceleration

    Could this have anything to do with the spark plugs? I don't think they have been replaced in over 32,000 miles. I was thinking that could be the issue, but then it would give a CEL... which I am not getting. Any thoughts?
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    Trans Stop Slip Additive?

    Thanks for the reply! About how long does a rebuild take? Sent from my iPhone using Tapatalk
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    Trans Stop Slip Additive?

    Hey guys! I was wondering if there are any Stop Slip transmission additives that you have used, and would like to recommend, and is it okay to use on the transmission so that it doesn't damage anything. Also, does the additive actually make a difference? Thanks! Sent from my iPhone using...
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    2WD Expy 4.6-Slow Acceleration

    Any help on this? Thanks
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    Slow Acceleration On Highway?

    Sorry. I just wasn't sure which to post it in, and I can't seem to find a way to delete a post.
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    Slow Acceleration On Highway?

    Hey guys! :favorites37: I am pretty new to these forums so sorry if I posted this in the wrong section. I have a 99 Expedition XLT 2WD 4.6 V8 Triton with about 192,000 miles. At about 154,700 I had the engine replaced with a refurbished one due to issues with the timing chain. After that...
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    2WD Expy 4.6-Slow Acceleration

    Disregard that! ^^^^^^^^ I was confused about something, sorry! I got it mixed up.
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    2WD Expy 4.6-Slow Acceleration

    *UPDATE* I was just reading some forum posts about overdrive... and what exactly it is that it does(sorry I am a noob with that stuff). Well I thought I should mention that I have been driving it with OD off since the refurb engine was put in. Every time I turn the car on to drive, it starts...

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