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I'll be replacing the throttle body in my 2004 Ford Ranger (engine v6 3.0L vin-U, mileage ~ 130000) as the result of my previous post (see here Is hot desert weather the source of my recurring car problem?)

I was quoted $900 for the total cost. MSRP is $450 for this part, but I found it online for $280. Therefore I'm doin it myself.

I scoured youtube for instructions on TB replacement. I found information on the procedure for cars in general, and only one video specific to rangers.

My question is, are there any precautions or steps that mechanics take when replacing the throttle body? I'll also be replacing the idle air control at the same time since this was related to the original engine code (p0506), as discussed in the post linked above.

I noticed some folks wear latex gloves in these videos - is this just to keep stuff off their hands? Or is it because you have to be extra careful about letting any dust or residue into the system during the replacement?

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  • Great question. I would bet this is just straight forward, but you'll most like need to adjust both the throttle position sensor and the IAC. I'm sure someone will answer this for you. The gloves are just keeping hands a little cleaner. Most people these days wear nitrile gloves because of latex allergies and because they just plain work a little better (and are pretty cheap). If you decide to get some, get the thicker 9mil versions as they last longer than the light duty (3mil) and medium duty (5 mil) ones (by a long shot). – Pᴀᴜʟsᴛᴇʀ2♦ Jul 13 '17 at 16:54
  • Is this an electronic throttle body (no throttle cable)? – CharlieRB Jul 13 '17 at 17:47
  • I would guess based on the existence of the IAC valve that only the IAC part is electronic. – juhist Jul 13 '17 at 17:49
  • The V6 in this Ranger has a throttle position sensor. – Pᴀᴜʟsᴛᴇʀ2♦ Jul 13 '17 at 21:15
  • @Pᴀᴜʟsᴛᴇʀ2 thank you for the insight! Nitrile 9 mil sounds like the way to go – Z W Jul 14 '17 at 2:00
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Here you go, It's fairly straight forwards. If you have a funny idle after replacing the parts and it wasn't there before. Recheck for vacuum leaks. If none are found reset the Keep Alive Memory with a scantool.

Regarding your code I would try cleaning the IACV, throttle body and resetting the KAM first.

Gloves are personal preference. I wear them because working with chemicals and the constant hand washing all day, destroys my hands.

Throttle Body

Disconnect the battery ground cable. Remove the air cleaner outlet pipe. Remove the bolt and the snow shield

Fig 7: Removing Bolt And Snow Shield enter image description here

Disconnect the throttle position (TP) sensor electrical connector.

Fig 8: Disconnecting TP Sensor Electrical Connector enter image description here

Disconnect the accelerator cable, the speed control cable and the return spring.

Fig 9: Disconnecting Accelerator Cable, Speed Control Cable And Return Spring enter image description here

Remove the bolts and the throttle body.

Fig 10: Removing Throttle Body enter image description here

If necessary, install a new throttle body gasket.

If necessary, remove the TP sensor.

Fig 11: Removing TP Sensor enter image description here

To install, reverse the removal procedure.

IACV

Disconnect the battery ground cable.

Disconnect the idle air control (IAC) valve electrical connector.

Fig 3: Disconnecting IAC Valve Electrical Connector enter image description here

Remove the IAC valve and discard the gasket.

Fig 4: Removing IAC Valve And Discarding Gasket enter image description here

NOTE: Install a new IAC valve gasket.

To install, reverse the removal procedure.

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  • This is great, thank you! Question: are the torque measurements just a "heads up" for how difficult these various bolts will be to remove? Or should I be making sure to re-attach each bolt up to the torque values provided? If so, how would you measure this? – Z W Jul 14 '17 at 2:14
  • Not hard to remove at all, 89 inch pounds is not a lot of torque. The intake manifold is either aluminum or plastic. If you have one a 1/4" inch pound torque wrench to tighten to spec. It's not a huge deal if it's not exactly to spec on gaskets like the tb and iacv gaskets. – Ben Jul 14 '17 at 2:22
  • Thanks again, I nearly successfully installed the new throttle body and idle air control valve. All except reconnecting the battery, I started a new post to troubleshoot a strange problem I'm having with reconnecting the battery causing the horn to sound off (mechanics.stackexchange.com/questions/46522/…). If you have any insight that would be greatly appreciated! – Z W Jul 25 '17 at 19:15

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