This is topic HELP URGENT - Modular motor in forum Tech Talk at Northern California Ford Owners .
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Posted by Saleen#222 (Member # 13410) on
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I just finished installing a Trick Flow Track Heat Manifold (like the Bullitt, dual TB)... My car is a 03 2v n/a..
What it does when I start it, it revs to redline and the TB is closed. What could it be?!!!!!! Help
Posted by SwEeT03Gt (Member # 10283) on
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did u get new cable? check the cable maybe it got stuck mine did the same
Posted by Saleen#222 (Member # 13410) on
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SweEaT03Gt not the cable, first thing I checked. It's a strange issue. Never had a car do this crap.
Posted by Saleen#222 (Member # 13410) on
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I have also checked for possible vacuum leaks and there is none. I don't think that would make the engine go as far as 7k rpm, would it?
Posted by Beastly GT500 TVS (Member # 9723) on
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Have you tried taking the cable off the tb and seeing what happens?
Posted by SwEeT03Gt (Member # 10283) on
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did you disconnect the battery, for at least 15 mins so the system can relearn itself? but im still with the throttle cable being the issue
Posted by SwEeT03Gt (Member # 10283) on
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also do you have a new idle air control valve? that caused mine to sky rocket when I installed a new one
Posted by Saleen#222 (Member # 13410) on
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@ Beastly haven't tried that (my battery died haha). I'll give it a shot tomorrow. @ SwEeT03Gt I have done the battery thing also.
I think I may have found the problem (maybe). Here's my theory that I can only think of. I'm using a stock 96-98 Cobra Duall 57mm TB and it has 2 10mm holes for something (before the throttle blades). Now, the 96-98 Cobra manifold and Bullitt upper manifold have a divider to block the airflow to pass (the 10mm holes) into the intake. Mine doesn't have that divider. Just a big oval like a single blade TB.
Do you guys think this may be the issue?
[ 2014-02-08, 10:43 PM: Message edited by: Saleen#222 ]
Posted by Saleen#222 (Member # 13410) on
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The IAC valve is the same one before the swap and it was working fine.
Posted by Grants93GT (Member # 10614) on
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why the fuck would it shoot to redline thats weird. If youre certain the throttle body is closed, its not the cable. Maybe its the throttle body issue like you said allowing in too much air? maybe try blocking off those ports you said werent on the other throttle body
Posted by Saleen#222 (Member # 13410) on
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@ grants your guess is as good as mine. I had that wtf look when I fired it up a few times. I know the TB blades where not open because I had my friend look on the last fire up. I'm leaning to the air issue. Maybe causing an extreme lean issue at idle making it rev like that. I'll try again tomorrow and see if blocking those small ports works. Hopefully it does work. I have never seen any TB's with holes like that to actually let air in at closed TB blade position.
Posted by will01bullitt (Member # 12991) on
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. quote:
Originally posted by Saleen#222:
@ Beastly haven't tried that (my battery died haha). I'll give it a shot tomorrow. @ SwEeT03Gt I have done the battery thing also.
I think I may have found the problem (maybe). Here's my theory that I can only think of. I'm using a stock 96-98 Cobra Duall 57mm TB and it has 2 10mm holes for something (before the throttle blades). Now, the 96-98 Cobra manifold and Bullitt upper manifold have a divider to block the airflow to pass (the 10mm holes) into the intake. Mine doesn't have that divider. Just a big oval like a single blade TB.
Do you guys think this may be the issue?
dont think it would be that because i just switched to a single blade on my bullitt works just fine and had to cut the divider to do it. still works with the stock TB too
the iac valve for the bullitt is specific maybe that might be the issue
http://www.latemodelrestoration.com/item/CX1808/Motorcraft-Idle-Air-Control-Motor-2001-Bullitt-Mustang
Posted by Saleen#222 (Member # 13410) on
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Will, you could be right. I'm going to look into this right now. Thank You.
Posted by Saleen#222 (Member # 13410) on
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DP
[ 2014-02-08, 11:19 PM: Message edited by: Saleen#222 ]
Posted by BULLITTMAN (Member # 8468) on
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quote:
Originally posted by Saleen#222:
@ grants your guess is as good as mine. I had that wtf look when I fired it up a few times. I know the TB blades where not open because I had my friend look on the last fire up. I'm leaning to the air issue. Maybe causing an extreme lean issue at idle making it rev like that. I'll try again tomorrow and see if blocking those small ports works. Hopefully it does work. I have never seen any TB's with holes like that to actually let air in at closed TB blade position.
I'm no mechanic but how was your friend able to see the blades open? The only way this is possible is by not connecting the air intake which is connected to your MAF. I would think this would cause your issue since the computer is getting a bad reading.
Posted by Saleen#222 (Member # 13410) on
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quote:
Originally posted by BULLITTMAN:
quote:
Originally posted by Saleen#222:
@ grants your guess is as good as mine. I had that wtf look when I fired it up a few times. I know the TB blades where not open because I had my friend look on the last fire up. I'm leaning to the air issue. Maybe causing an extreme lean issue at idle making it rev like that. I'll try again tomorrow and see if blocking those small ports works. Hopefully it does work. I have never seen any TB's with holes like that to actually let air in at closed TB blade position.
I'm no mechanic but how was your friend able to see the blades open? The only way this is possible is by not connecting the air intake which is connected to your MAF. I would think this would cause your issue since the computer is getting a bad reading.
He was looking at the linkage of the TB. He said that it wasn't moving, assuming it was closed.
Posted by Saleen#222 (Member # 13410) on
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I also just did some research on a stock Bullitt TB and it doesn't have this center hole in Pic.1
If I had the center divider on the intake, it would be covering it. I hope I'm right. Praying to the Ford GODS!!!!
[ 2014-02-09, 06:46 AM: Message edited by: Saleen#222 ]
Posted by WILDMAN97 (Member # 9138) on
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Have you checked your TPS?
Posted by Saleen#222 (Member # 13410) on
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Not yet Wildman. I do plan to check voltage though to fine tune the idle if necessary. I need to borrow my friends DC voltage meter. Waiting for his ass to wake up.
Posted by will01bullitt (Member # 12991) on
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maybe these pics might help
]
[ 2014-02-09, 10:05 AM: Message edited by: will01bullitt ]
Posted by Saleen#222 (Member # 13410) on
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quote:
Originally posted by will01bullitt:
maybe these pics might help
]
Thank You Budd, that does help to confirm my issue. I was informed that those holes are the IAC for a 4v and 2v have them sealed for an external IAC. Thank you again for the pics!!
Posted by will01bullitt (Member # 12991) on
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no problem
Posted by Saleen#222 (Member # 13410) on
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Are you selling your stock TB Will?!
Posted by will01bullitt (Member # 12991) on
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no sorry bro got to keep it due to smog , but you can find some on ebay
Posted by SwEeT03Gt (Member # 10283) on
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if you two are near by let him borrow it to confirm its his issue so he doesn't just throw parts at it, just my .02 cents
Posted by saleen428 (Member # 7535) on
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.... just thinking out loud here... how does the engine maintain redline rpms with the throttle blades closed? It should need an appropriate amount of air to support that RPM. I could see a rev to maybe 2-3k (would be rich)....but 6k? Are you 100% sure the throttle blades are completely closed? Is air entering the intake track / manifold from another entry point?
Posted by Saleen#222 (Member # 13410) on
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quote:
Originally posted by saleen428:
.... just thinking out loud here... how does the engine maintain redline rpms with the throttle blades closed? It should need an appropriate amount of air to support that RPM. I could see a rev to maybe 2-3k (would be rich)....but 6k? Are you 100% sure the throttle blades are completely closed? Is air entering the intake track / manifold from another entry point?
I'm not exactly sure if it was maintaining a steady idle at that RPM. It just kept climbing slowly. I would shut it off before the engine would scatter. The only thing that I can think of is a ton of air was going thru the 4v IAC holes in the TB. I'm plugging those large holes and see how it idles after that. I'm positive that the blades were closed due to my friend watching the throttle linkage at the TB during firing.
Posted by Saleen#222 (Member # 13410) on
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quote:
Originally posted by will01bullitt:
no sorry bro got to keep it due to smog , but you can find some on ebay
Totally understandable. it was worth a shot LoL..
Posted by Saleen#222 (Member # 13410) on
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quote:
Originally posted by SwEeT03Gt:
if you two are near by let him borrow it to confirm its his issue so he doesn't just throw parts at it, just my .02 cents
I'm in the South Bay. Good thinking though. I'm plugging up the TB IAC holes and see how it goes. Waiting on the sealer to set and give it a test before ordering a new TB.
Posted by Grants93GT (Member # 10614) on
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keep us updated im really interested. Why dont you switch to the old throttle body, change nothing but that, start it up and see what happens. If it doesnt do it on the old one but for sure the new one, somethings going on
Posted by Saleen#222 (Member # 13410) on
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quote:
Originally posted by Grants93GT:
keep us updated im really interested. Why dont you switch to the old throttle body, change nothing but that, start it up and see what happens. If it doesnt do it on the old one but for sure the new one, somethings going on
I couldn't use my old TB because is was a round 70mm TB.. My new Track Heat manifold is like the 01 Bullitt and uses a oval cobra style TB.
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*************UPDATE***************
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Last night I was finally able to get it to idle normally, thank god haha. It was because I was using the wrong 4v TB. The wrong TB had that open IAC hole letting air in at closed throttle/idle. For a temporary fix, I filled the hole with some strong gasket silicone until the new TB arrives this week. Not the most reliable thing to do but, I needed it to drive the car up on ramps real quick for maintenance and new parts.
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