Car will not run after Vortech removal

03_100th · May 19th, 2010, 07:23 PM

OK...I am about to my wits end....

The vortech kit was removed from a 2004 and installed on a 2003. The deal with the 04 was that he did not have the stock parts to put back on, so we put the stock parts off of the 03 on it. Here is a list of the stock parts....throttle body, injectors, MAF, fuel pump and inlet ducting. The only issue that was found was that the 04 had a 90mm lightning MAF on it so when it was put back to stock we had to splice the 2 wires for the built in IAT sensor back on the MAF plug. At first I just used crimps and I thought that maybe that was the issue with the bad running. Well, tonight I soldered the wires instead and it still does not run right. The car starts and idles for a little while then dies. While it is running, if you try to give it throttle it will sputter and hesitate and then die. I am out of ideas, please help...

Shaun03GT · May 19th, 2010, 07:30 PM

Thats because the car hates you for taking the Vortech off.

Dolbs4082 · May 19th, 2010, 07:32 PM

did you reflash your tune? your computer was tuned to run with the vortech, now theres no vortech. which means it wont run right til its tuned

Kerns · May 19th, 2010, 07:33 PM

Did you reconnect the IAC? That is what my car did when I had my IAC in the wrong spot. Take a picture of the engine bay and maybe we can help more. Also, make sure the car has a tune for the Lightning MAF and is tuned for the change in injector size etc.

03_100th · May 19th, 2010, 07:39 PM

Originally Posted by Shaun03GT

Thats because the car hates you for taking the Vortech off.

hahahahah...yeh, probably...

03_100th · May 19th, 2010, 07:41 PM

Originally Posted by Dolbs4082

did you reflash your tune? your computer was tuned to run with the vortech, now theres no vortech. which means it wont run right til its tuned

Yes, the car has a new tune in it from an SCT SF3 now. The weird thing is that the 04 was bought with the Vortech on it already. There is no chip connected to the computer and according to Vortech support that is what they do for those kits. There is also no tuner with the car so I have no idea how the car was running right in the first place, unless tthe previous owner used a tuner on the car but did not leave it with the car and did not put it back to stock. I thought at first that the computer may have to be reflashed to stock by Ford but when I installed a tune from my SF3 it did not help at all....That is 1 unlock down the tubes. The 04 is not my car. I bought the kit from this guy for $1100. It came with a BBK 75mm TB, Vortech kit, 42lb injectors, 90mm lightning MAF, AFM powerpipe and a SVT Focus pump and installed it on my 03.

03_100th · May 19th, 2010, 07:43 PM

Originally Posted by Kerns

Did you reconnect the IAC? That is what my car did when I had my IAC in the wrong spot. Take a picture of the engine bay and maybe we can help more. Also, make sure the car has a tune for the Lightning MAF and is tuned for the change in injector size etc.

The IAC for 03 and 04 are built into the stock MAF. The lightning MAF and the bigger injectors are now on my 03. It is tuned with an SCT Livewire and runs just fine. It is the 04 that we put back to stock and now does not run right...

Kerns · May 19th, 2010, 07:50 PM

not the IAT (Intake Air Temperature) sensor, the IAC (Idle Air Control) valve.

03_100th · May 19th, 2010, 07:54 PM

Originally Posted by Kerns

not the IAT (Intake Air Temperature) sensor, the IAC (Idle Air Control) valve.

lol...sorry read that wrong. The IAC is plugged in. It is the stock one that came off of my 03. We switched throttle bodys also. What do you mean by you had your IAC in the wrong spot? It is connected to the TB and can only go on one way.

Shaun03GT · May 19th, 2010, 07:56 PM

is their a vacuum leak somewhere?? Not throwing any codes? TPS voltage?

03_100th · May 19th, 2010, 08:04 PM

Originally Posted by Shaun03GT

is their a vacuum leak somewhere?? Not throwing any codes? TPS voltage?

I have not seen any vacuum lines unplugged. No codes. Did not check the TPS voltage, I figured it was OK since it was working just fine on my car. Do you know what it is suppose to read on these cars? I know the Fox bodies like to be set to around .95 I believe?

Shaun03GT · May 19th, 2010, 08:07 PM

I forget to be honest. Hmmm, idk this is odd. Im trying to think of some things. Im stumped to be honest. Hopefully someone else can help you more....

Did you clean the IAC? Disconnect the battery for an hour and then connect it?

03_100th · May 19th, 2010, 08:20 PM

Originally Posted by Shaun03GT

I forget to be honest. Hmmm, idk this is odd. Im trying to think of some things. Im stumped to be honest. Hopefully someone else can help you more....

Did you clean the IAC? Disconnect the battery for an hour and then connect it?

Nope, didnt try cleaning it. It was working great on my car. I will try the battery again.....

Jaygt · May 19th, 2010, 08:28 PM

Check vac line to throttle body same thing was happening when I blew off the line from valve cover to throttle body

0949er · May 19th, 2010, 08:43 PM

so the 04 has 03 MAF, injectors, intake, plenum, throttle body, etc

and you sure you are tuning the car right? I mean, fuel wise?

JoshC! · May 19th, 2010, 08:48 PM

check the vacuum line on the back of the plenum, its easy to miss and leave unplugged.

03_100th · May 19th, 2010, 09:29 PM

The 04 has an 03 maf, injectors and throttle body only. Should these parts exchange for stock on each car? The tune is just a built in tune on the SF3 for a stock car. Wouldn't an 04 have pretty much the same stock parts as an 03?

03_100th · May 19th, 2010, 09:32 PM

Originally Posted by 00vert

check the vacuum line on the back of the plenum, its easy to miss and leave unplugged.

I will look at the plenum. I don't know why it would be unplugged though, I have not removed the plenum at all. Just the throttle body.

0949er · May 19th, 2010, 09:58 PM

Originally Posted by 03_100th

The 04 has an 03 maf, injectors and throttle body only. Should these parts exchange for stock on each car? The tune is just a built in tune on the SF3 for a stock car. Wouldn't an 04 have pretty much the same stock parts as an 03?

yes and yes. So that would bring you back to a vacuum leak possibly? EGR Valve? IAC Valve? all good?

Mafs hooked up right? Did you hook the IAT back up to the stock MAF?

You tuned it in that tuner back to stock injectors?

What about spark plugs? cops?

03_100th · May 20th, 2010, 07:47 AM

Originally Posted by 0949er

yes and yes. So that would bring you back to a vacuum leak possibly? EGR Valve? IAC Valve? all good?

Mafs hooked up right? Did you hook the IAT back up to the stock MAF?

You tuned it in that tuner back to stock injectors?

What about spark plugs? cops?

I will check everything again....

Yes, I had to splice the the two end (gray) wires back into the harness for the MAF plug.

yep, stock injectors, stock maf. Unless for some reason the car is not taking the tune. It says on the tuner that it downloaded fine into the car, so I cant see that being the issue.

Never pulled the plugs or COPS. The car should still at least run if the plugs are still gapped tighter than stock dont you think?

May 19th, 2010, 07:23 PM	#1
03_100th Newbie 2011 Mustang GT 5.0 Join Date: Jan 2010 Location: Kentucky Posts: 34 iTrader: 0 reviews	Car will not run after Vortech removal OK...I am about to my wits end.... The vortech kit was removed from a 2004 and installed on a 2003. The deal with the 04 was that he did not have the stock parts to put back on, so we put the stock parts off of the 03 on it. Here is a list of the stock parts....throttle body, injectors, MAF, fuel pump and inlet ducting. The only issue that was found was that the 04 had a 90mm lightning MAF on it so when it was put back to stock we had to splice the 2 wires for the built in IAT sensor back on the MAF plug. At first I just used crimps and I thought that maybe that was the issue with the bad running. Well, tonight I soldered the wires instead and it still does not run right. The car starts and idles for a little while then dies. While it is running, if you try to give it throttle it will sputter and hesitate and then die. I am out of ideas, please help...

May 19th, 2010, 07:30 PM	#2
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,441 iTrader: 12 reviews	Thats because the car hates you for taking the Vortech off. __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

May 19th, 2010, 07:32 PM	#3
Dolbs4082 I Blumpkin Entirely Way Too Much 2005 Mustang GT Join Date: Dec 2008 Location: kansas Posts: 5,958 iTrader: 0 reviews	did you reflash your tune? your computer was tuned to run with the vortech, now theres no vortech. which means it wont run right til its tuned __________________ MM + Cleavage member #22

May 19th, 2010, 07:33 PM	#4
Kerns Regular Join Date: May 2010 Posts: 60 iTrader: 0 reviews	Did you reconnect the IAC? That is what my car did when I had my IAC in the wrong spot. Take a picture of the engine bay and maybe we can help more. Also, make sure the car has a tune for the Lightning MAF and is tuned for the change in injector size etc. __________________ Vortech V-2 SQ 3.33 pulley, Intercooler, Tial BOV, SCT XCal2, KB BAP, Pro-5.0 STS, Accufab 75mm TB and Plenum, O/R H-Pipe, Flowmaster exhaust, 3.73 gears, MM XD LCA's, Lakewood 70/30 Struts, MM CC Plates, UPR Front Coil Overs with 14/175 lb springs.

May 19th, 2010, 07:50 PM	#8
Kerns Regular Join Date: May 2010 Posts: 60 iTrader: 0 reviews	not the IAT (Intake Air Temperature) sensor, the IAC (Idle Air Control) valve. __________________ Vortech V-2 SQ 3.33 pulley, Intercooler, Tial BOV, SCT XCal2, KB BAP, Pro-5.0 STS, Accufab 75mm TB and Plenum, O/R H-Pipe, Flowmaster exhaust, 3.73 gears, MM XD LCA's, Lakewood 70/30 Struts, MM CC Plates, UPR Front Coil Overs with 14/175 lb springs.

May 19th, 2010, 07:56 PM	#10
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,441 iTrader: 12 reviews	is their a vacuum leak somewhere?? Not throwing any codes? TPS voltage? __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

May 19th, 2010, 08:07 PM	#12
Shaun03GT I Post Entirely Way Too Much 2003 Mustang GT 1/8 - 7.92 @ 91.13mph 1/4 - 12.21 @ 115.84mph Join Date: Sep 2009 Location: Weymouth, MA Posts: 13,441 iTrader: 12 reviews	I forget to be honest. Hmmm, idk this is odd. Im trying to think of some things. Im stumped to be honest. Hopefully someone else can help you more.... Did you clean the IAC? Disconnect the battery for an hour and then connect it? __________________ Vortech V1 Intercooled @ 11psi 394rwhp/392rwtq @ 9.5psi 415rwhp/400rwtq @ 11psi on Methanol Tuned By: Pete @ Performance Dyno Affordable Supercharger Build Guide Supercharger Info for Noobs

May 19th, 2010, 08:28 PM	#14
Jaygt Regular 2002 mustang gt Na Join Date: Jan 2010 Location: Tolland ct Posts: 81 iTrader: 0 reviews	Check vac line to throttle body same thing was happening when I blew off the line from valve cover to throttle body

May 19th, 2010, 08:43 PM	#15
0949er MM Fanatic 2004 Mustang GT 12.85 @ 114 Join Date: Apr 2010 Location: Charlotte Posts: 3,224 iTrader: 0 reviews	so the 04 has 03 MAF, injectors, intake, plenum, throttle body, etc and you sure you are tuning the car right? I mean, fuel wise? __________________ MODS: Vortech V1 T-Trim @ 7.5 PSI (tuned down) Comp Cam Stage 2's + more 432 rwhp / 396 rwtq 02/27/2011 NEW VIDEOS! It takes ~$60 a rwhp (over stock) for a 99-04 Mustang GT. Do the Math C2H5OH on the horizon

May 19th, 2010, 08:48 PM	#16
JoshC! I Hate Convertibles... 2000 GT Vert Join Date: Oct 2007 Location: Odessa, Texas Posts: 5,511 iTrader: 0 reviews	check the vacuum line on the back of the plenum, its easy to miss and leave unplugged. __________________ Im topless, are you? Topless Mustang Club Founder Black Stang Crew Member #boobs out mods/pics

May 19th, 2010, 09:29 PM	#17
03_100th Newbie 2011 Mustang GT 5.0 Join Date: Jan 2010 Location: Kentucky Posts: 34 iTrader: 0 reviews	The 04 has an 03 maf, injectors and throttle body only. Should these parts exchange for stock on each car? The tune is just a built in tune on the SF3 for a stock car. Wouldn't an 04 have pretty much the same stock parts as an 03?

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