Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 04-30-2007, 01:54 PM   #21
IHateHacks
20psi boost
 
IHateHacks's Avatar
 
Join Date: May 2006
Location: New Haven/Hamden
Posts: 793
IHateHacks is on a distinguished road
Default

Yep, these cars will suck you dry and keep asking for more. Why do you think they are so rare? It's because people just get fed up with them and junk 'em. It takes alot of patience and knowledge to put up with a MK3 supra. You must have a passion for them, or its just not going to work out, kinda like a relationship

You should test the resistance of the MAF. Take the MAF off the intake piping. Now, looking at the terminals with the MAF upright (rectangular air box side to the left, circular turbo side to the right) the terminals are labeled from left to right E1, Vc, Ks, THA, E2. Heres the chart from the TSRM:

Ks -> E1 should have infinite resistance.
E1 -> Ks should be between 5-10K ohms.
Vc -> E1 should be between 10-15K ohms.
E1 -> Vc should be between 5-10K ohms.
THA -> E2 is ambient temperature dependant.
At 32F resistance should be 4-7K ohms.
At 68F resistance should be 2-3K ohms.
At 104F resistance should be .9-1.3K ohms.
Basically the resistance should fall as the temperature increases.

Now gut that cat or buy a test pipe and see what happens. And I was just busting your balls about the rod knock, it really sounds like preignition to me, have you been running 93 octane or 87?
IHateHacks is offline   Reply With Quote
Old 04-30-2007, 02:36 PM   #22
Z'mnypit
3" Exhaust
 
Z'mnypit's Avatar
 
Join Date: Apr 2007
Location: Springville, AL
Posts: 57
Z'mnypit is on a distinguished road
Default

Quote:
Originally Posted by IHateHacks
Yep, these cars will suck you dry and keep asking for more. Why do you think they are so rare? It's because people just get fed up with them and junk 'em. It takes alot of patience and knowledge to put up with a MK3 supra. You must have a passion for them, or its just not going to work out, kinda like a relationship

You should test the resistance of the MAF. Take the MAF off the intake piping. Now, looking at the terminals with the MAF upright (rectangular air box side to the left, circular turbo side to the right) the terminals are labeled from left to right E1, Vc, Ks, THA, E2. Heres the chart from the TSRM:

Ks -> E1 should have infinite resistance.
E1 -> Ks should be between 5-10K ohms.
Vc -> E1 should be between 10-15K ohms.
E1 -> Vc should be between 5-10K ohms.
THA -> E2 is ambient temperature dependant.
At 32F resistance should be 4-7K ohms.
At 68F resistance should be 2-3K ohms.
At 104F resistance should be .9-1.3K ohms.
Basically the resistance should fall as the temperature increases.

Now gut that cat or buy a test pipe and see what happens. And I was just busting your balls about the rod knock, it really sounds like preignition to me, have you been running 93 octane or 87?
Thanks man! Sounds like you really know your stuff when it comes to these cars.

Ill test it this afternoon and see whats up.

Its got 87 in it. Also Im sure the old gas from it sitting up doenst help at all. I put some 105 octane booster in it to try and help it some.

Lol, Im still going to start building the other that way im not in a rush. It does sound like some knock or somehting is loose, doesnt sound like a rod bearing.
__________________
-99 Z28 A4 6.7L "2006 LS1tech Calendar cover car"
408ci, Comp 244/248, Patriot Stage III LS6 heads, FAST 90mm Intake, NW 90mm TB, SVO 42lb'rs, Pacesetter LT's, ORY, 4L80e, Yank 3400, Motive 3.73's, Racetronix, TNT 200shot, Fikse FM10's

-2005 Silverado Crew Cab 5.3L (Towing), Silverbirch, Hooker Aero Chamber, blacked out windows, sittin on 22's

- Two 87 turbo'd/targa top'd supras (*Under Construction*)
Z'mnypit is offline   Reply With Quote
Old 05-01-2007, 01:01 AM   #23
Z'mnypit
3" Exhaust
 
Z'mnypit's Avatar
 
Join Date: Apr 2007
Location: Springville, AL
Posts: 57
Z'mnypit is on a distinguished road
Default

Worked on the supra for a bit this afternoon and found that the TB is sucking air. Its right between the intake and the TB. I pulled it off and plan on putting a new gasket tommorrow. If only this is going to be my problem.
__________________
-99 Z28 A4 6.7L "2006 LS1tech Calendar cover car"
408ci, Comp 244/248, Patriot Stage III LS6 heads, FAST 90mm Intake, NW 90mm TB, SVO 42lb'rs, Pacesetter LT's, ORY, 4L80e, Yank 3400, Motive 3.73's, Racetronix, TNT 200shot, Fikse FM10's

-2005 Silverado Crew Cab 5.3L (Towing), Silverbirch, Hooker Aero Chamber, blacked out windows, sittin on 22's

- Two 87 turbo'd/targa top'd supras (*Under Construction*)
Z'mnypit is offline   Reply With Quote
Old 05-01-2007, 01:21 AM   #24
IHateHacks
20psi boost
 
IHateHacks's Avatar
 
Join Date: May 2006
Location: New Haven/Hamden
Posts: 793
IHateHacks is on a distinguished road
Default

I just took it for granted that you didn't have any vacuum leaks.

A vacuum leak after the MAF will cause a check engine light (for the MAF) and will also cause a lean condition which will cause that pinging sound you hear.

I think the TB gasket will fix your problem.
IHateHacks is offline   Reply With Quote
Old 05-01-2007, 12:57 PM   #25
Z'mnypit
3" Exhaust
 
Z'mnypit's Avatar
 
Join Date: Apr 2007
Location: Springville, AL
Posts: 57
Z'mnypit is on a distinguished road
Default

Quote:
Originally Posted by IHateHacks
I just took it for granted that you didn't have any vacuum leaks.

A vacuum leak after the MAF will cause a check engine light (for the MAF) and will also cause a lean condition which will cause that pinging sound you hear.

I think the TB gasket will fix your problem.
I did to until I could hear a small hiss under the hood. So I broke out the starting fluid and started spraying around where everywhere something meets up. And sure enough, I spray it around the TB and the car tries to die. So bingo, found a vacuum leak. I should know this afternoon whether or not it does fix it. Right now it seems to start and idle fine, a little hesitant when you give it gas but will not rev past 2500rpm. Its like its hitting the fuel cutoff. But I wonder why it would run fine for a whole day then i wash under the hood and it all of a sudden gets a vacuum leak. Its crazy!

I also took the cat off and gutted it. So maybe that will help a bit. I also plan on swapping out the fuel filter today to.
__________________
-99 Z28 A4 6.7L "2006 LS1tech Calendar cover car"
408ci, Comp 244/248, Patriot Stage III LS6 heads, FAST 90mm Intake, NW 90mm TB, SVO 42lb'rs, Pacesetter LT's, ORY, 4L80e, Yank 3400, Motive 3.73's, Racetronix, TNT 200shot, Fikse FM10's

-2005 Silverado Crew Cab 5.3L (Towing), Silverbirch, Hooker Aero Chamber, blacked out windows, sittin on 22's

- Two 87 turbo'd/targa top'd supras (*Under Construction*)

Last edited by Z'mnypit; 05-01-2007 at 03:16 PM.
Z'mnypit is offline   Reply With Quote
Old 05-01-2007, 10:01 PM   #26
Z'mnypit
3" Exhaust
 
Z'mnypit's Avatar
 
Join Date: Apr 2007
Location: Springville, AL
Posts: 57
Z'mnypit is on a distinguished road
Default

Ok fixed the TB from leaking and changed out the fuel filter and its still doing the same thing. It revs, spits sputters, backfires and want go anywhere. Ive checked every plug and connector on the car for moisture and all are clean and dry. Timing is right at 11-12* idling. Ive pulled the timing cover to verify the cam sprockets and crank line up with each other and they do. the crank mark will be on 0 and both cam sprocket marks are with the mark on the backing plate. Still throwing the 31 code for the maf but thats it. All the rest are gone. Im at a dead end with this car. I dont know what else to try anyboy have and suggestion?
__________________
-99 Z28 A4 6.7L "2006 LS1tech Calendar cover car"
408ci, Comp 244/248, Patriot Stage III LS6 heads, FAST 90mm Intake, NW 90mm TB, SVO 42lb'rs, Pacesetter LT's, ORY, 4L80e, Yank 3400, Motive 3.73's, Racetronix, TNT 200shot, Fikse FM10's

-2005 Silverado Crew Cab 5.3L (Towing), Silverbirch, Hooker Aero Chamber, blacked out windows, sittin on 22's

- Two 87 turbo'd/targa top'd supras (*Under Construction*)
Z'mnypit is offline   Reply With Quote
Old 05-03-2007, 12:01 AM   #27
Z'mnypit
3" Exhaust
 
Z'mnypit's Avatar
 
Join Date: Apr 2007
Location: Springville, AL
Posts: 57
Z'mnypit is on a distinguished road
Default

IT FINALLY RUNS! Replaced the igniter with one off my parts car and bam, runs like a champ. Still got the MAF code and its a little low on power but its running is the main thing. About to do a compression check on all cylinders and seewhere that stands. Also have some rod knock. Thought maybe it was something loose but its defiantly rod knock. Im going to track down a MAF and see if I can rid of that code and then Ill start form there. Going to pull the motor from the donor car this weekend and start getting it ready to be swapped when this one dies. I did shim the waste gate .022 so the boost was right at 7psi. I dont guess ill up the boost until I get the new motor ready. But thankfully she's running.
__________________
-99 Z28 A4 6.7L "2006 LS1tech Calendar cover car"
408ci, Comp 244/248, Patriot Stage III LS6 heads, FAST 90mm Intake, NW 90mm TB, SVO 42lb'rs, Pacesetter LT's, ORY, 4L80e, Yank 3400, Motive 3.73's, Racetronix, TNT 200shot, Fikse FM10's

-2005 Silverado Crew Cab 5.3L (Towing), Silverbirch, Hooker Aero Chamber, blacked out windows, sittin on 22's

- Two 87 turbo'd/targa top'd supras (*Under Construction*)
Z'mnypit is offline   Reply With Quote
Old 05-03-2007, 12:40 AM   #28
supramacist
1000whp postwhore
 
supramacist's Avatar
 
Join Date: Apr 2007
Location: Escape from the Prison Planet
Posts: 1,356
supramacist is on a distinguished road
Default

RIGHT ON MAN.

I have been keeping up with both threads, but haven't had anything helpfull to add. So call it learning.

Glad it worked out.
supramacist is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Won't suck the water from overflow illusive38 MKIII Supra 7 05-24-2012 09:19 AM
Where the h--- is the water going??? illusive38 Non-Generation Specific Questions 1 05-27-2008 03:23 AM
Where the h--- is the water going??? illusive38 Non-Generation Specific Questions 0 05-26-2008 09:27 AM
Bad Water Pump? scruffboy Non-Generation Specific Questions 10 11-26-2006 04:37 PM
WAter not going back to raditor from recovery tank Help Jeff_5_7 MKIII Supra 12 09-15-2006 03:49 AM


All times are GMT. The time now is 03:20 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87