{"id":904,"date":"2017-03-04T00:38:11","date_gmt":"2017-03-04T08:38:11","guid":{"rendered":"http:\/\/www.nickpisca.com\/diesel\/?p=904"},"modified":"2020-01-15T11:49:01","modified_gmt":"2020-01-15T19:49:01","slug":"proper-idi-vrv-adjustment-and-calibration","status":"publish","type":"post","link":"https:\/\/www.nickpisca.com\/diesel\/fuel-system\/proper-idi-vrv-adjustment-and-calibration\/","title":{"rendered":"Proper IDI VRV Adjustment and Calibration"},"content":{"rendered":"

VRV Quick Installation Guide<\/strong>:\u00a0 (Quick Instructions are in dark green text)<\/span><\/p>\n

If you want to quickly install a VRV (Vacuum Regulator Valve), read the following paragraphs.<\/span><\/p>\n

The VRV installs on the driver’s side of the Injector Pump (IP) on the top of the engine. It rotates with the throttle to convert vacuum pressure for the transmission. It’s a simple installation process, but I have a few things you’ll need to check out first.<\/span><\/p>\n

Here’s what your Injector Pump and VRV should look like once installed: (this is the end goal)<\/span><\/p>\n

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Before you install it, check to make sure your Injector Pump has a pin or rod like this: (It kind of looks like a nail. If you don’t have this, contact us<\/a>.)<\/span><\/p>\n

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Next is the installation:<\/span><\/p>\n

Here’s an image of an Injector Pump laying on my workbench, with the VRV installed on the side.<\/span><\/p>\n

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In green, there are two mounting bolts. That’s it. Slide the VRV on the side of the IP, and tighten the bolts down. Make sure to install the VRV so that the rod can rotate the VRV camshaft.<\/span><\/p>\n

Then connect the vacuum hoses. Most Fords had a special VRV top connector like this:<\/span><\/p>\n

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If you don’t have one of these, it’s no big deal. You can use regular vacuum hose from your typical autoparts store.\u00a0 (Look at the image below to make sure the top hose connects to the Vacuum manifold, and the bottom hose goes to the transmission modulator, shown in white text.)<\/em><\/span><\/p>\n

Adjusting the VRV Shift Points.\u00a0\u00a0<\/strong><\/span><\/p>\n

Take the truck for a drive and see how it shifts.<\/span><\/p>\n

If it shifts too soon or too late for your liking, stop the truck, turn off the engine, unscrew the mounting bolts a little bit to loosen up the VRV, rotate the to the front or rear of the truck a few degrees, and tighten the VRV back down again. The red arrows in the image below show how it rotates.<\/span><\/p>\n

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Keep adjusting the rotation of the VRV until you like where it shifts.\u00a0 That concludes installation calibration.\u00a0<\/strong> If things are still not working correctly, please contact us<\/a>.\u00a0 If things are fine, then you are done with this webpage.\u00a0<\/strong><\/em><\/span><\/p>\n

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What if your vehicle never had a VRV before?<\/strong><\/p>\n

Some people (like someone doing a Diesel swap) may never have had a VRV on their IP before.\u00a0 For most Diesel swap projects, you won’t find all the connectors and supplementary parts for the VRV installation.\u00a0 IDI Online does have a small inventory of vacuum system parts<\/a>, and contact us<\/a> for what you need.<\/p>\n

Connect the vacuum connector to the top of the VRV and you are done with the installation. If you don’t have the connector, the top VRV hose-bib is for the vacuum supply hose. Find your vacuum manifold (should look like this in a truck:)<\/p>\n

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Install a vacuum hose from this manifold to the VRV top bib.<\/p>\n

Then place a vacuum hose from the bottom VRV bib to the C6 Transmission Modulator. That is located at the back of the transmission under the truck.<\/p>\n

If you don’t know where your modulator is, this video<\/a> shows a guy removing his. It looks like a little cylinder on the end of the transmission. (since your PO probably didn’t maintain his modulator, you might want to inspect it for damage or gunk).<\/p>\n

That would conclude the vacuum hose installation.<\/p>\n

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More Advanced Calibration, Servicing, and Testing (mainly for mechanics and technicians):<\/strong><\/p>\n

We’ve collected any C6 VRV (Vacuum Regulator Valve) information from the service manuals and internet that we could find. Many of the VRV servicing explanations on the internet are messed up, and they need some cleaning or revising.\u00a0 Here’s a collection of data we’ve cleaned up in a more readable format, with complete citations at the bottom of the article.<\/p>\n

If you are looking for VRV replacement part(s), Click Here.<\/a><\/p>\n

Disclaimer:\u00a0 You are responsible for your vehicle and actions. This article is for educational use only. IDI Online is not responsible for anything or anyone. Not responsible for damage to your vehicle, you, or anyone or anything.\u00a0 Take your vehicles to a professional when servicing the transmission, engine, and its components.\u00a0\u00a0<\/b><\/h6>\n

From the 1988 Ford Service Manual (citations at the end of the article)<\/em>:<\/p>\n