Throttle Body Rebuild - Hints, Suggestions

EYEROCK89 · 02-22-2008, 12:39 AM

I just got done cleaning out my TB and I'm about to replace it. I'm also about to clean and rebiuld the fuel pressure regulator and install some new fuel injectors. It seems easy enough, but I just wanted to make sure. If you guys have any hints are secrets or things that I should be sure and do during the rebuild, please let me know.
I have all new gaskets and i'm planning on throwing a little grease on the throttle spring and maybe just a little on the inside of the new TPS...would that hurt anything?

I'll try to get a couple pics, but the funny thing is....there wasn't a single bit of carbon build up anywhere on the TB or inside the intake. I've got 220K on my truck, I guess Berrymans and Seafoam do alot of good through the gas tank.

TCossuto · 02-22-2008, 10:35 PM

It's pretty easy. I just rebuilt mine today in the Advance auto parts parking lot. Don't give the star bolts too much torque, but make sure they are nice and snug.

Also make sure the diaphragm gasket is evenly seated around the metal or it will leak.

ezrollin · 02-23-2008, 02:23 PM

The diaphragm and O rings require close scruity or they will cause problems.

EYEROCK89 · 02-23-2008, 05:17 PM

Quote: Originally Posted by ezrollin

The diaphragm and O rings require close scruity or they will cause problems.

I spent a little extra time putting the FPR back together. It looked like everything really needed to be precise so I watched all the seals very closely.
The FPR diapragm was a huge pain, but we eventually got it. The stupid thing kept flipping up and kinking a little on one side. If anything goes wrong when I start her back up...my money is on that.

Well, I just got done putting her all back together. She's basically been sitting since early January when the fuel pump went bad. She's got tons of new sensors, seals and other parts so hopefully she'll come through for me. I'm so freakin nervous so I'm going to eat lunch and say a little prayer before I put the battery back in and try to crank her up.

ezrollin · 02-27-2008, 11:50 PM

I bought 2 kits,one for a 2.8 a one for a 4.3,one kit had a pair of "dowels" to locate the fpd in place during assy; so I saved them for furtur use.

TCossuto · 02-28-2008, 10:40 AM

Quote: Originally Posted by ezrollin

I bought 2 kits,one for a 2.8 a one for a 4.3,one kit had a pair of "dowels" to locate the fpd in place during assy; so I saved them for furtur use.

Don't buy a kit that doesn't come with the 'dowles'. That's the cheap shitty kit. Mine started leaking fuel within a week with the shitty kit (even though I used dowls from a previous rebuild (different car)). Replaced with nice kit that came with dowls and it's been fine since.

EYEROCK89 · 02-29-2008, 12:47 AM

Hmm, I guess it would have been a good idea to have asked what the dowels were for. I never even touched them thinking they were part of the kit for a different TBI. Oh well, hopefully I did alright.

eyeswide99 · 03-02-2008, 06:19 AM

How much are you guys spending on the rebuild I just got price of $250 for a swap out threw guaranteed carbs?

TCossuto · 03-02-2008, 01:42 PM

Quote: Originally Posted by eyeswide99

How much are you guys spending on the rebuild I just got price of $250 for a swap out threw guaranteed carbs?

Throttle body rebuild kits are ~40 dollars for a good one. Takes 15-30 mins.

ezrollin · 03-03-2008, 10:38 PM

Don't buy a rebuilt tbi,if you can do it with minimal skill if you take your time.

TCossuto · 03-05-2008, 11:24 PM

Quote: Originally Posted by ezrollin

Don't buy a rebuilt tbi,if you can do it with minimal skill if you take your time.

who you talkin to?

EYEROCK89 · 03-05-2008, 11:32 PM

Yeah, the rebuld was actually pretty easy. Here's what I did:

-disassembled TB, FPR and fuel meter.
-soaked overnight in Chemtool parts cleaner
-Used Q-tips and compressed air to clean and dry all valleys, vacuum ports, etc
-Used dremel polishing wheel on all gasket surfaces
-Installed new gaskets, tighted bolts to spec
-Used a little tranny fluid on the injector o-rings.
-Lithium grease on throttle spring

So far so good..no leaks.

thankthelowered · 05-01-2009, 03:48 AM

I am wanting to rebuild mine, and have no Idea what I am doing with a TB. Can anyone show me a diagram of whats what on a TB. Also who makes a good TB rebuild kit?

guitcarman1 · 05-01-2009, 10:44 AM

You guys think a rebuild would solve my problem??? Mine basically floods out at low rpm's but its okay after it gets tached up.

SH-60B · 05-01-2009, 04:08 PM

Quote: Originally Posted by guitcarman1

You guys think a rebuild would solve my problem??? Mine basically floods out at low rpm's but its okay after it gets tached up.

You probably should be looking at the fuel pressure regulator.

rallen · 05-06-2009, 04:45 PM

I've gotten a couple of TB's out of the jy, trying to find an up grade for my 2.8 but the linkage isn't the same. what do I need?

Sundance Kid · 10-14-2009, 10:40 PM

hey, you think a TB rebuild would help mine? It runs fine until it hits about 3/4 throttle then it starts running like shit and then smooths back out.

02-22-2008, 12:39 AM	#1
EYEROCK89 Mr. Clean Age: 32 Join Date: Nov 2004 Posts: 800 Location: Birmingham, AL User is: OffLine	Throttle Body Rebuild - Hints, Suggestions I just got done cleaning out my TB and I'm about to replace it. I'm also about to clean and rebiuld the fuel pressure regulator and install some new fuel injectors. It seems easy enough, but I just wanted to make sure. If you guys have any hints are secrets or things that I should be sure and do during the rebuild, please let me know. I have all new gaskets and i'm planning on throwing a little grease on the throttle spring and maybe just a little on the inside of the new TPS...would that hurt anything? I'll try to get a couple pics, but the funny thing is....there wasn't a single bit of carbon build up anywhere on the TB or inside the intake. I've got 220K on my truck, I guess Berrymans and Seafoam do alot of good through the gas tank.
	[Reply w/Quote]

02-22-2008, 10:35 PM	#2
TCossuto Registered User Join Date: Aug 2007 Posts: 752 Location: User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions It's pretty easy. I just rebuilt mine today in the Advance auto parts parking lot. Don't give the star bolts too much torque, but make sure they are nice and snug. Also make sure the diaphragm gasket is evenly seated around the metal or it will leak.
	[Reply w/Quote]

02-23-2008, 02:23 PM	#3
ezrollin CHANGE YOUR EMAIL ADDRESS Join Date: Nov 2002 Posts: 419 Location: wpb fl User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions The diaphragm and O rings require close scruity or they will cause problems.
	[Reply w/Quote]

02-23-2008, 05:17 PM	#4
EYEROCK89 Mr. Clean Age: 32 Join Date: Nov 2004 Posts: 800 Location: Birmingham, AL User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Quote: Originally Posted by ezrollin The diaphragm and O rings require close scruity or they will cause problems. I spent a little extra time putting the FPR back together. It looked like everything really needed to be precise so I watched all the seals very closely. The FPR diapragm was a huge pain, but we eventually got it. The stupid thing kept flipping up and kinking a little on one side. If anything goes wrong when I start her back up...my money is on that. Well, I just got done putting her all back together. She's basically been sitting since early January when the fuel pump went bad. She's got tons of new sensors, seals and other parts so hopefully she'll come through for me. I'm so freakin nervous so I'm going to eat lunch and say a little prayer before I put the battery back in and try to crank her up. Last edited by EYEROCK89 : 02-23-2008 at 05:19 PM.
	[Reply w/Quote]

02-27-2008, 11:50 PM	#5
ezrollin CHANGE YOUR EMAIL ADDRESS Join Date: Nov 2002 Posts: 419 Location: wpb fl User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions I bought 2 kits,one for a 2.8 a one for a 4.3,one kit had a pair of "dowels" to locate the fpd in place during assy; so I saved them for furtur use.
	[Reply w/Quote]

02-28-2008, 10:40 AM	#6
TCossuto Registered User Join Date: Aug 2007 Posts: 752 Location: User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Quote: Originally Posted by ezrollin I bought 2 kits,one for a 2.8 a one for a 4.3,one kit had a pair of "dowels" to locate the fpd in place during assy; so I saved them for furtur use. Don't buy a kit that doesn't come with the 'dowles'. That's the cheap shitty kit. Mine started leaking fuel within a week with the shitty kit (even though I used dowls from a previous rebuild (different car)). Replaced with nice kit that came with dowls and it's been fine since.
	[Reply w/Quote]

02-29-2008, 12:47 AM	#7
EYEROCK89 Mr. Clean Age: 32 Join Date: Nov 2004 Posts: 800 Location: Birmingham, AL User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Hmm, I guess it would have been a good idea to have asked what the dowels were for. I never even touched them thinking they were part of the kit for a different TBI. Oh well, hopefully I did alright.
	[Reply w/Quote]

03-02-2008, 06:19 AM	#8
eyeswide99 Registered User Age: 41 Join Date: Jan 2007 Posts: 33 Location: Missoula Montana User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions How much are you guys spending on the rebuild I just got price of $250 for a swap out threw guaranteed carbs?
	[Reply w/Quote]

03-02-2008, 01:42 PM	#9
TCossuto Registered User Join Date: Aug 2007 Posts: 752 Location: User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Quote: Originally Posted by eyeswide99 How much are you guys spending on the rebuild I just got price of $250 for a swap out threw guaranteed carbs? Throttle body rebuild kits are ~40 dollars for a good one. Takes 15-30 mins.
	[Reply w/Quote]

03-03-2008, 10:38 PM	#10
ezrollin CHANGE YOUR EMAIL ADDRESS Join Date: Nov 2002 Posts: 419 Location: wpb fl User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Don't buy a rebuilt tbi,if you can do it with minimal skill if you take your time.
	[Reply w/Quote]

03-05-2008, 11:24 PM	#11
TCossuto Registered User Join Date: Aug 2007 Posts: 752 Location: User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Quote: Originally Posted by ezrollin Don't buy a rebuilt tbi,if you can do it with minimal skill if you take your time. who you talkin to?
	[Reply w/Quote]

03-05-2008, 11:32 PM	#12
EYEROCK89 Mr. Clean Age: 32 Join Date: Nov 2004 Posts: 800 Location: Birmingham, AL User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Yeah, the rebuld was actually pretty easy. Here's what I did: -disassembled TB, FPR and fuel meter. -soaked overnight in Chemtool parts cleaner -Used Q-tips and compressed air to clean and dry all valleys, vacuum ports, etc -Used dremel polishing wheel on all gasket surfaces -Installed new gaskets, tighted bolts to spec -Used a little tranny fluid on the injector o-rings. -Lithium grease on throttle spring So far so good..no leaks.
	[Reply w/Quote]

05-01-2009, 03:48 AM	#13
thankthelowered Lock and Low'd Age: 23 Join Date: Oct 2007 Posts: 98 Location: Ripley, TN User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions I am wanting to rebuild mine, and have no Idea what I am doing with a TB. Can anyone show me a diagram of whats what on a TB. Also who makes a good TB rebuild kit?
	[Reply w/Quote]

05-01-2009, 10:44 AM	#14
guitcarman1 Low and Slow Sono Age: 20 Join Date: Jan 2006 Posts: 67 Location: Glen Burnie User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions You guys think a rebuild would solve my problem??? Mine basically floods out at low rpm's but its okay after it gets tached up.
	[Reply w/Quote]

05-01-2009, 04:08 PM	#15
SH-60B Registered Neanderthal Join Date: Nov 2007 Posts: 2,335 Location: Meriden/CT/USA User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions Quote: Originally Posted by guitcarman1 You guys think a rebuild would solve my problem??? Mine basically floods out at low rpm's but its okay after it gets tached up. You probably should be looking at the fuel pressure regulator.
	[Reply w/Quote]

05-06-2009, 04:45 PM	#16
rallen Registered User Age: 34 Join Date: Mar 2009 Posts: 28 Location: User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions I've gotten a couple of TB's out of the jy, trying to find an up grade for my 2.8 but the linkage isn't the same. what do I need?
	[Reply w/Quote]

10-14-2009, 10:40 PM	#17
Sundance Kid Registered User Age: 17 Join Date: Sep 2009 Posts: 5 Location: KY User is: OffLine	Re: Throttle Body Rebuild - Hints, Suggestions hey, you think a TB rebuild would help mine? It runs fine until it hits about 3/4 throttle then it starts running like shit and then smooths back out.
	[Reply w/Quote]