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12-02-2005, 06:23 PM
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#1
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Theft light, 2001 v-6 mustang
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Registered User
Join Date: Dec 2005
City: boiling springs
State: South Carolina
Posts: 26
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Hello, I just swapped a 2003 v-6 mustang engine into a 2001 mustang that had a blown 3.8 v-6. tried to start today and the engine wont run. Cranks but will not fire. Theft light in dash is flashing. Called ford and they say the 2001 computer wont run a 2003 engine. Does any one have any tips or do you believe Ford is correct. |
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12-02-2005, 11:25 PM
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#2
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Re: Theft light, 2001 v-6 mustang
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postarama
Join Date: Aug 2003
City: Southaven
State: Mississippi
Posts: 24,294
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Ford is probably correct...you might wanna get ahold of a newer ecu. It'd solve your problem.
__________________
"I'm not driving too fast...just flying too low"
Mine:
-87 ranger- broke
-03 SB Cobra vert- 2552 of 5082 Born 02/25/03
Our's:
90 7up vert - new project
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12-03-2005, 07:37 AM
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#3
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Jul 2003
Posts: 254
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How does the computer know what engine is in there car? is has NO WAY to. Most likely you have a blown fuse somewhere, what does your odometer read? That engine will work fine in that car.
__________________
Justin Starkey
2007 Shelby GT500 705RWHP/708RWTQ
2000 Mustang 3.8 A4 TT 450RWHP/475RWTQ 10.996@127 17psi stock 3.8
2006 F250 CC 4x4 6.0L 14.3 @ 93
2006 Mustang 4.0 M5 Vortech 13psi 395RWHP/374RWTQ wife's car
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12-03-2005, 08:46 AM
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#4
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Re: Theft light, 2001 v-6 mustang
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postarama
Join Date: Aug 2003
City: Southaven
State: Mississippi
Posts: 24,294
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Ha..ignore me...he knows what he's talking about lol.
__________________
"I'm not driving too fast...just flying too low"
Mine:
-87 ranger- broke
-03 SB Cobra vert- 2552 of 5082 Born 02/25/03
Our's:
90 7up vert - new project
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12-03-2005, 02:50 PM
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#5
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Dec 2005
City: boiling springs
State: South Carolina
Posts: 26
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12-04-2005, 09:14 AM
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#6
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Nov 2005
Posts: 12
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What other things did you do during the swap?
What wiring harness and sensors did you use?
Also did you happen to install the instrument cluster from the 2003 into your 2001?
__________________
2003 Mustang Mach1
1995 Thunderbird LX 4.6
1995 Mustang 3.8; M90 Supercharger/10%OD pulley, 80mm Maf, 70mm TB, 42lb injectors, SC Heads, 255lph Walbro, Xcal2, AODE w/Jmod, 8.8 3.73 Tracloc, Tokico Struts/Shocks, C springs.
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12-04-2005, 09:41 AM
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#7
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Re: Theft light, 2001 v-6 mustang
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Cammed Baby!
Join Date: May 2003
City: Chicago 'Burbs
State: Illinois
Posts: 1,713
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The instrument cluster & the EEC are tied together with PATS.
A change of either can be fixed with a chip or tune.
__________________
2003 SVT Lightning #1059 of 4270
2000 Vert 4R70W
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12-04-2005, 10:07 AM
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#8
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Dec 2005
City: boiling springs
State: South Carolina
Posts: 26
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I only swapped the engines, the new 2003 engine had the original wiring harness on it. So I dropped in the 2003 engine and the 2003 harness plugged into everything on the 2001 car. I didnt swap any thing else.
So its a 2003 engine and wiring harness in a 2001 car, 2001 computer, cluster etc. |
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12-04-2005, 10:09 AM
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#9
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Dec 2005
City: boiling springs
State: South Carolina
Posts: 26
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Would a swap of the wiring harnesses work ??? Put the original 2001 harness on the 2003 engine, then the only difference would be the engine itself. Or is there something else that will through it off. |
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12-04-2005, 06:00 PM
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#10
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Nov 2005
Posts: 12
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I would use the 2001 wiring harness. Even though it plugged in it may have a different pinout.
__________________
2003 Mustang Mach1
1995 Thunderbird LX 4.6
1995 Mustang 3.8; M90 Supercharger/10%OD pulley, 80mm Maf, 70mm TB, 42lb injectors, SC Heads, 255lph Walbro, Xcal2, AODE w/Jmod, 8.8 3.73 Tracloc, Tokico Struts/Shocks, C springs.
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12-04-2005, 07:05 PM
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#11
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Dec 2005
City: boiling springs
State: South Carolina
Posts: 26
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Thats what Ive been thinking more and more, Sounds like if I use a newer computer in the car I may run into trouble with the instrument cluster and the PAT system. Thanks for your input. |
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12-04-2005, 11:07 PM
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#12
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Re: Theft light, 2001 v-6 mustang
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I liek gramer
Join Date: Jan 2004
City: Birmingham
State: Alabama
Posts: 19,163
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You can get a PATS bypass off of ebay for a few bucks.. ~$20ish
Dunno if that would help though.
__________________
Delta Sigma Phi - building better men since 1899
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12-05-2005, 07:44 AM
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#13
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Dec 2005
City: boiling springs
State: South Carolina
Posts: 26
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Thanks, it would at least narrow down the problems. |
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12-05-2005, 01:56 PM
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#14
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Re: Theft light, 2001 v-6 mustang
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I liek gramer
Join Date: Jan 2004
City: Birmingham
State: Alabama
Posts: 19,163
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They're usually bought for remote start capabilities for alarms.
__________________
Delta Sigma Phi - building better men since 1899
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12-05-2005, 07:35 PM
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#15
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Re: Theft light, 2001 v-6 mustang
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Registered User
Join Date: Dec 2005
City: boiling springs
State: South Carolina
Posts: 26
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thanks for all your help guys, I got it running today, it was plugged injectors on the 03 motor, it must have been sitting for awhile and had bad gas in it. Put in the 01 injectors and she fired right up. |
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