HELP with 4.6L Running Super Rich -

Go Back > Ford Mustang Tech > 4.6L (1996-2004 Modular) Mustang

4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

HELP with 4.6L Running Super Rich

Thread Tools Search this Thread
Old 12-14-2013, 01:26 PM   #1
Join Date: Jan 2012
Vehicle: 2001 Ford Mustang GT
Location: NY
Posts: 24
Default HELP with 4.6L Running Super Rich

I have an 01 Mustang 4.6L that is running Super, Super rich. The motor was transplanted from a Mustang into a Jeep Wrangler. I purchased the wire Harness from RJM Injection Tech along with the custom tune in an SCT hand held unit. RJM is as worthless as worthless can be, fair warning, do NOT ever buy anything from that company. Anyway, the harness seems to ring out correctly with the sensors to the correct pins and I replaced the MAF, IAT, CAM, Crank and the (2) font O2 sensors with Ford OE sensors. Also have new and replaced again new spark plugs. I can just barley get the engine to start and when it does all 4 plugs in the right bank turn black with carbon and all 4 in the left bank are dripping with fuel. I just tried another custom tune from JMS Chip & Performanace and that does not seem to change anything. The motor was running in the donor car when I purchased it and the computer is the one from that car as well. Any thoughts as what can be making it run likes this?? Totally baffled at this point.

waltrobak is offline   Reply With Quote
Old 12-14-2013, 03:56 PM   #2
1st Gear Member
TXMach's Avatar
Join Date: Dec 2013
Vehicle: 2003 Ford Mustang Mach 1
Location: Georgia
Posts: 141

Is this engine stock? Are you running a tune for a custom set-up with a stock engine? I wonder if the tune is meant for a set-up that takes in much more air. Have you tried running on the stock tune?
Steeda UDP, Steeda CAI, BBK Twin-65mm TB, MSD Blaster Coils, Bassani Catted X-Pipe, Magnaflow Cat-back system, Bama Tuned, Exedy stage 2 clutch & 16 lb. flywheel, Steeda Stage 1 G-Trac suspension.
TXMach is offline   Reply With Quote
Old 12-14-2013, 04:11 PM   #3
cliffyk's Avatar
Join Date: Dec 2006
Vehicle: 1998 SL500
Location: Saint Augustine, FL
Posts: 10,924

Is it a stock Mustang 4.6, 2V MAF?

Stock injectors (should be orange)?

What is the fuel pressure, should be 28 psi or so, at the rail at idle?

What sort of fuel system are you running, has the tune been set to run with whatever fuel supply you are running?
-cliff knight-
SOLD! - 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum,
Delta Force tuned, Steeda UDPs, Ralco flywheel,
RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq

Engineering is, at its base, making what you want from what you have.
At its extreme it is making what you want from what you can get.
cliffyk is offline   Reply With Quote


Similar Threads
Thread Thread Starter Forum Replies Last Post
2010 Mustang GT, Supercharged, 8700 miles, SE Pennsylvania Galactic Mustangs For Sale 8 08-28-2016 06:39 PM
01 Mustang Overheating :( MusicCity615 General Tech 7 09-12-2015 08:05 AM
Best Extreme Performance Summer Tires for our Mustangs? M3hunter S197 Handling Section 0 09-05-2015 04:42 PM
Coverking SatinStretch S197 Indoor Cover aleit2013 Parts For Sale 0 09-04-2015 12:58 PM
New member and just bought my first mustang Luke9222 New Member Area 7 09-04-2015 07:46 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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


All times are GMT -5. The time now is 08:15 PM.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company