Accufab throttle body and inlet support


Accufab

Well-known member
Mar 14, 2006
142
I can't comment about the Reseller's Permit number in this situation as they weren't discussing it with me, probably someone in our office. Faxing over a copy of the Permit is all we need to deal with the sales tax, but the Accufab Dealer Program does require a little more effort (filling out the form) and a buy-in. This keeps our dealer's happy because we won't ever try to under sell them or be in competition with them. We only sell at the listed retail price.

Anyway, regarding the TB not returning to idle speed, etc., this is something that we have seen before and not just with the GT. I always ask the person reporting the problem if the TB returns completely with the key off and the engine not running. If it does, this is USUALLY a sign that the TPS voltage is off, typically too high, and the computer is holding the TB open too long. The TB (anyone's TB) is a mechanical device with only one moving part (the shaft and blade) and it only rotates 90-degrees, from full closed to full open. The only message that your engine computer gets as to where your right foot is (relative to the floor, LOL) is via the TPS (throttle position sensor). It is a one way message with no feedback. MOST of the idle issue we have ever seen have been the result of the TPS voltage being too high and the computer "thinking" that you still have your foot on the throttle, rather than being at idle. Another sensor on the car is called the "speed sensor" which actually compares the speed vs. the throttle position. The computer is constantly comparing these two inputs. As the computer is a "learning computer", it will eventually (maybe after 200 miles of driving) figure out that it needs to bring the idles back quicker and re-adjust it's own pre-programmed protocol. This learning process can be hastened by disconnecting the battery ground for a while and re-connecting it, therby causing the computer to "start from scratch" so to speak. The TPS is nothing more than a rheostat, like the volume knob on an old radio. When the voltage is set correctly (key on, engine not running) at between .98 to 1.0 volts, it will go up to about 5.0 volts at full throttle, and the engine computer will be very happy.

The TB in question will be checked by us and if there is a problem, we will fix it or replace it. Out stuff is pretty much guaranteed for life against defects.

Sorry about the long post.

By the way, I guess we need to get some photos to the site soon regarding our "project car" here at Accufab. We have removed the supercharger, had a new intake manifold fabricated in it's place, and have installed a couple of turbochargers. It's not quite finished yet but it looks to be a doozy. One of the neat things about a turbo car is that we won't need to use any mufflers and it will still be pretty quiet, maybe even quieter than stock.

One other thing I wanted to mention, particularly for the So Cal or regional GT owners, we (Accufab) are planning on sponsoring a "Ford GT Roundup" on October 21-22, in conjunction with the Fun Ford Weeked all-Ford drag race and car show series, at California Speedway in Fontana, CA. I will be giving you some other info as the summer moves on so please keep in touch.

George Klass
 
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Ed Sims

GT Owner
Mark IV Lifetime
Apr 7, 2006
7,922
NorCal
Thanks George

It was a long post but with a lot of good info. I look forward to getting the TB on my GT. I may plan on attending the October event. Thanks for the info.

Ed
 

Ed Sims

GT Owner
Mark IV Lifetime
Apr 7, 2006
7,922
NorCal
Accufab TB installed finally

Harrold Ford installed the Accufab throttle body again while I watched on Monday. Yes, they checked the voltage & set it correctly. I recently had to send the TB back to Accufab since the idle wouldn't return to normal without tapping the gas pedal or linkage when first installed a few weeks ago (see previous posts). Now it is pefect. I believe a bushing was replaced by Accufab. It sure looks awesome! The TB is clearly visible under the rear lid glass. The TB is polished with the word Accufab etched on it. I can't notice an improvement in performance without any other mods except for a Bob Ida exhaust. The cool factor is worth it though!

Ed
 

KenBMD

Well-known member
Feb 22, 2006
80
Here are some pics for you.

tb.jpg


tb2.jpg
 

lthlvpr

GT Owner
Mar 8, 2006
299
Hey that car looks familiar....oh wait...that's mine!!
Ken-
Are you OK if my agent contacts you regarding my royalty agreement? :biggrin
 

AMB

GT Owner
Aug 29, 2005
401
San Diego,Ca.
Ed Sims

Did you have/find any OIL in the Supersharger INLET ?? Does your STOCK TB have any CARBON/OIL on the backside of the BLADES ?? Mine did, when I installed my new Accufab TB; I only had about 500 miles on it !!!

AMB
 

Ed Sims

GT Owner
Mark IV Lifetime
Apr 7, 2006
7,922
NorCal
oil in supercharger inlet & tb

Dear AMB,
I have 2600 miles on my GT & watched as the Harrold Ford tech replaced the tb & check/set the voltage. There was no detectable oil anywhere.

Ed