V6 Engine Help

nightmare.stalker · January 8th, 2012, 10:37 AM

I have a 99 mustang 35th anniversary with 3.8 v6 engine. I had to replace the engine with an 01 3.8 v6 it was the only one that was in my area. To my under standing the only difference was the intake. I took the intake from the 99 engine an put on the 01 engine, other wise the engine harness would have been different from the coil pack, and injectors I think. I'm wondering if my mistake was not using the injectors from the 01 an also the coil pack? I'm getting a back fire, also can't get past 55 without bogging down. Any help/info would be greatly appreciated! Thank you for your time.

99 BLUE V6 · January 8th, 2012, 12:37 PM

Check plug wires for correct firing order

mustangmike! · January 8th, 2012, 12:38 PM

What all did you replace ? Be specific.

mustangmike! · January 8th, 2012, 12:39 PM

Long block swap should give you 0 problems if you did it right.
Unless the balancing is different that is

6ixer · January 8th, 2012, 01:46 PM

Why did u chhanged intakes....arnt all stock intake plenums the same for all 99-04 sixers?

ESG-642T · January 8th, 2012, 02:10 PM

did you replace the lower intake? Or what?

Green_6er · January 8th, 2012, 02:14 PM

make sure you don't have plug wires 5 and 6 mixed up.

mustangmike! · January 8th, 2012, 02:48 PM

Originally Posted by Green_6er

make sure you don't have plug wires 5 and 6 mixed up.

Have you ever done that ? lol
IF not, even if your half ass stupid, as soon as that thing fires over once you'll kill it as fast as possible.

And it'll be the only time you ever forget to double check your wires.

iPAPKE · January 8th, 2012, 05:05 PM

Check plugs and wires.

99 BLUE V6 · January 9th, 2012, 06:29 AM

had same problem when I switched to windstar. Plug wires were wrong 5/6 .
Make sure you didn't mount coil upside down

98SilverStang · January 9th, 2012, 06:42 AM

Oh man when I had my old sixer I crossed 5/6 wire in the parts store parking lot so it was dark. Man never again I had no idea what was going on for about 5 secs.

Sent from my Autoguide iPhone app

mustangmike! · January 9th, 2012, 09:38 AM

Originally Posted by 98SilverStang

Oh man when I had my old sixer I crossed 5/6 wire in the parts store parking lot so it was dark. Man never again I had no idea what was going on for about 5 secs.

Sent from my Autoguide iPhone app

This fool lives in the hood ! Done thought he got shot !!!

Lol but thats what im saying, if you hear that thing missfire just once w/ a crossed wire and let it keep running ... Ill get banned talking about how stupid you are

stephen · January 9th, 2012, 03:03 PM

Originally Posted by nightmare.stalker

I have a 99 mustang 35th anniversary with 3.8 v6 engine. I had to replace the engine with an 01 3.8 v6 it was the only one that was in my area. To my under standing the only difference was the intake. I took the intake from the 99 engine an put on the 01 engine, other wise the engine harness would have been different from the coil pack, and injectors I think. I'm wondering if my mistake was not using the injectors from the 01 an also the coil pack? I'm getting a back fire, also can't get past 55 without bogging down. Any help/info would be greatly appreciated! Thank you for your time.

I believe there are some differences between the 99 and later intake manifolds including the later have runner control and a different location for one of the temperature sensors. It was probably a good idea to use the 99 intake manifold both upper and lower. I don't think the injectors are different but the 99 ones should be fine.

The problem you are having is probably in the ignition. I would suggest a new
Motorcraft coil pack. It will have the plug wire locations marked so you can
be sure the wires are not interchanged.

mustangmike! · January 9th, 2012, 03:10 PM

^
this. you may use atleast the short block, and if sensors are the same or can be reused in the same spot, the long block.

Stang6899 · January 9th, 2012, 03:37 PM

So I'm in the same boat as the op. I swapped over the coil pack, wires, and upper intake from the 99 motor that was bad. So could using a 99 coil pack/wires cause the engine to shake a little and misfire?

January 8th, 2012, 10:37 AM	#1
nightmare.stalker Newbie 1999 Mustang Join Date: Oct 2011 Location: Irvine, KY Posts: 4 iTrader: 0 reviews	V6 Engine Help I have a 99 mustang 35th anniversary with 3.8 v6 engine. I had to replace the engine with an 01 3.8 v6 it was the only one that was in my area. To my under standing the only difference was the intake. I took the intake from the 99 engine an put on the 01 engine, other wise the engine harness would have been different from the coil pack, and injectors I think. I'm wondering if my mistake was not using the injectors from the 01 an also the coil pack? I'm getting a back fire, also can't get past 55 without bogging down. Any help/info would be greatly appreciated! Thank you for your time.

January 8th, 2012, 12:37 PM	#2
99 BLUE V6 Premium Member 99 V6 BASE NEVER RACED THIS ONE Join Date: Nov 2009 Location: PALM BEACH FLORIDA Posts: 1,377 iTrader: 1 reviews	Check plug wires for correct firing order __________________

January 8th, 2012, 12:38 PM	#3
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	What all did you replace ? Be specific. __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

January 8th, 2012, 12:39 PM	#4
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	Long block swap should give you 0 problems if you did it right. Unless the balancing is different that is __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

January 8th, 2012, 01:46 PM	#5
6ixer Hardcore Enthusiast 2000 mustang v6 14.6@99.68 Join Date: Apr 2010 Location: east greenbush, ny Posts: 1,567 Blog Entries: 3 iTrader: 0 reviews	Why did u chhanged intakes....arnt all stock intake plenums the same for all 99-04 sixers? __________________ Ported heads, comp cams cam, AM CAI, posi'd rear with 3.73 gears, flowmaster exhaust Fixed clutch!!!!! "My mustang likes a good ol' fashion bowl of rice....especially fried"

January 8th, 2012, 02:10 PM	#6
ESG-642T [8MINUS2] 2002, Ford, v6 Join Date: Feb 2007 Location: TEXAS Posts: 12,319 iTrader: 0 reviews	did you replace the lower intake? Or what? __________________ Hi, You can call me Kyle Random ESG fact: Had a prochamber on his v6 before it was popular. WTB: v6 BBK valve covers

January 8th, 2012, 05:05 PM	#9
iPAPKE iPoopke Regular 2004 Mustang Join Date: Aug 2011 Location: Michigan Posts: 844 iTrader: 0 reviews	Check plugs and wires.

January 9th, 2012, 06:29 AM	#10
99 BLUE V6 Premium Member 99 V6 BASE NEVER RACED THIS ONE Join Date: Nov 2009 Location: PALM BEACH FLORIDA Posts: 1,377 iTrader: 1 reviews	had same problem when I switched to windstar. Plug wires were wrong 5/6 . Make sure you didn't mount coil upside down __________________

January 9th, 2012, 06:42 AM	#11
98SilverStang Regular 1998 mustang GT Join Date: Dec 2011 Location: Jensen beach Posts: 215 iTrader: 0 reviews	Oh man when I had my old sixer I crossed 5/6 wire in the parts store parking lot so it was dark. Man never again I had no idea what was going on for about 5 secs. Sent from my Autoguide iPhone app

January 9th, 2012, 03:10 PM	#14
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	^ this. you may use atleast the short block, and if sensors are the same or can be reused in the same spot, the long block. __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

January 9th, 2012, 03:37 PM	#15
Stang6899 Hardcore Enthusiast Modded V6 Join Date: Sep 2006 Location: Mukilteo WA Posts: 1,466 iTrader: 1 reviews	So I'm in the same boat as the op. I swapped over the coil pack, wires, and upper intake from the 99 motor that was bad. So could using a 99 coil pack/wires cause the engine to shake a little and misfire? __________________ 1999 e46 328i BMW - Daily Driver 2001 SVT Cobra - Project 1995 v6 vert - SOLD 1996 v6 vert - SOLD 1995 v6 vert #2 - SOLD 1995 GT - SOLD 1997 v6 coupe - Parting

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