|
Author
|
Topic: Trouble Codes..................
|
Boss Hoss
Gearhead Posts: 235
From: Georgia
Registered: Mar 2001
|
posted 06-27-2005 08:07 PM
   
I have just completed swapping the old, cracked intake manifold on my 1996 GT for a new, redesigned manifold. It works like a charm so far and fits perfectly...BUT...ever since completing the job I am getting two persistent trouble codes that I don't really know what to do about: P0304 - Cylinder #4 Misfire Detected P1409 - EGR Vacuum Regulator Circuit Malfunction The car runs rough, but only sporadically. When it runs right, it runs GREAT. But it keeps flip-flopping back and forth between running OK and running rough. What do I do at this point?
IP: Logged |
SUBMARINER MUSTANGER
Gearhead Posts: 1277
From: Grandview, Missouri
Registered: Jun 99
|
posted 06-27-2005 09:02 PM
quote:
Originally posted by Boss Hoss:
P0304 - Cylinder #4 Misfire Detected
Most likely, you dumped some coolant down in #4 plug hole and now it's misfiring. Pull the #4 plug wire, blow out the hole, pull the plug, check it for cracks in the porcelin and clean it off while you're at it, then swap the plug wire with a known good one, and see if your misfire goes away. quote:
1409 - EGR Vacuum Regulator Circuit Malfunction
I think this is a hard fault, you most likely left the sensor unplugged. Not related to the P0304. Did you double check all of your connections?
Did you not see my answer to your previous post regarding your intake and the upcoming recall?
------------------
Sub Stanger/Oxford White 2003 Mach 1.
MCA Member #61863
Past Mustangs: '84 GT 5-speed; '91 GT auto; '70 M-code Mach 1, grabber yellow; '95 GT-S 5 speed, green, wrecked and totalled; 1995 GT-S 5 speed, bright yellow; '94 6-banger, wifes; '89 LX 5.0 vert, '90 LX 5.0 hatch, '69 M-code Mach 1, 4 speed, 1990 5.0 LX 'vert w/ AOD converted to T-5. [This message has been edited by SUBMARINER MUSTANGER (edited 06-27-2005).]
IP: Logged |
Boss Hoss
Gearhead Posts: 235
From: Georgia
Registered: Mar 2001
|
posted 06-27-2005 09:29 PM
quote:
Originally posted by SUBMARINER MUSTANGER:
Most likely, you dumped some coolant down in #4 plug hole and now it's misfiring.
I never removed any of the spark plugs during the swap. But I will say that it is significant that the #4 plug is closest to the area of the old intake that leaked the most. It's just strange that it would misfire NOW. quote:
1409 - EGR Vacuum Regulator Circuit Malfunction
I think this is a hard fault, you most likely left the sensor unplugged. Not related to the P0304. Did you double check all of your connections?
Did you not see my answer to your previous post regarding your intake and the upcoming recall?
It is very possible that I left the sensor unplugged, although I checked all of the connections twice. I cannot tell a lie: There is one small push-on plug on the EGR side of the throttle body that I could not find a mate to. I thought I had put it in the right place, but I guess not, huh? Yes, I did see your post about the upcoming recall, but since I had already purchased my replacement intake and I felt that I could do the job more quickly and with more care, I decided to grit my teeth and take matters into my own hands. I'm very pleased with how the non-Ford intake fits and works, and when I can get rid of these two nagging problems, I think I will honestly say that I saved time and money in the long run...but I do wish I had known about that darn recall before I made my purchase. Just my luck! But thanks so much for sharing that info anyway...it made me feel vindicated knowing that Ford won't be able to dodge their responsibility after foisting a sub-standard part on the public! [This message has been edited by Boss Hoss (edited 06-27-2005).]
IP: Logged |
SUBMARINER MUSTANGER
Gearhead Posts: 1277
From: Grandview, Missouri
Registered: Jun 99
|
posted 06-27-2005 09:40 PM
Yeah, that #4 wire is right next to that coolant port at the back of the intake and if that's where it was leaking, then you've definately gotten coolant seepage down there over the course of however long it's been leaking. The leak starts out slow, so who know how long it's been leaking....possibly years. Those plug wires seal tight, but they'll allow coolant to leak down there eventually breaking down the wire. Change the wire, and you'll be in good shape. I just checked and Ford has not issued a new recall on the intakes yet, so just hang onto your receipts, get with a dealership when the recall does come out, and get your refund. ------------------
Sub Stanger/Oxford White 2003 Mach 1.
MCA Member #61863 Past Mustangs: '84 GT 5-speed; '91 GT auto; '70 M-code Mach 1, grabber yellow; '95 GT-S 5 speed, green, wrecked and totalled; 1995 GT-S 5 speed, bright yellow; '94 6-banger, wifes; '89 LX 5.0 vert, '90 LX 5.0 hatch, '69 M-code Mach 1, 4 speed, 1990 5.0 LX 'vert w/ AOD converted to T-5.
IP: Logged |
Boss Hoss
Gearhead Posts: 235
From: Georgia
Registered: Mar 2001
|
posted 06-28-2005 03:36 PM
Hey, Sub Stanger:You hit a home run with your advice to look for coolant seepage on the #4 cylinder. I pulled off the spark plug boot and it was SOAKED with coolant. That was my first clue. Next, I took my compressed air hose and blew into the hole where the spark plug was (I did not remove the spark plug yet). A -TON- of coolant sprayed out! I knew I was really on to something at that point. When I was sure that the vast majority of the coolant had been sprayed out, I removed the spark plug. It was soaking wet, right down to the very bottom of the threads. I put the spark plug on my wire wheel and got all the coolant and sludge off of the spark plug. I checked the plug gap and thoroughly cleaned the contacts. I put the plug back in, put the now-dried spark plug boot on, and fired her up. She ran FINE! I have been driving her for the better part of the day, and so far the "Check Engine" light has stayed off (FINGERS CROSSED!).... I'm wondering about the EGR malfunction trouble code...I'm thinking that it came on because the EGR sensor may have picked up some "non-standard" exhaust emissions due to the coolant being burned. Does this sound plausible? THANKS VERY MUCH for all of your kind assistance!
IP: Logged |
SUBMARINER MUSTANGER
Gearhead Posts: 1277
From: Grandview, Missouri
Registered: Jun 99
|
posted 06-28-2005 09:41 PM
Glad I could help!------------------
Sub Stanger/Oxford White 2003 Mach 1.
MCA Member #61863 Past Mustangs: '84 GT 5-speed; '91 GT auto; '70 M-code Mach 1, grabber yellow; '95 GT-S 5 speed, green, wrecked and totalled; 1995 GT-S 5 speed, bright yellow; '94 6-banger, wifes; '89 LX 5.0 vert, '90 LX 5.0 hatch, '69 M-code Mach 1, 4 speed, 1990 5.0 LX 'vert w/ AOD converted to T-5.
IP: Logged |
mustangs68
Moderator Posts: 24577
From: Buckroe Beach Va MCA#39406 M&M #12 Member Mustang Club of Tidewater
Registered: May 99
|
posted 07-01-2005 07:14 AM
Boss Hoss,
I met Sub a few years ago,good fellow he is, you could even say he the "meat" in the sandwich kinda fellow  Sam
IP: Logged |
SUBMARINER MUSTANGER
Gearhead Posts: 1277
From: Grandview, Missouri
Registered: Jun 99
|
posted 07-02-2005 11:51 AM
 ------------------
Sub Stanger/Oxford White 2003 Mach 1.
MCA Member #61863 Past Mustangs: '84 GT 5-speed; '91 GT auto; '70 M-code Mach 1, grabber yellow; '95 GT-S 5 speed, green, wrecked and totalled; 1995 GT-S 5 speed, bright yellow; '94 6-banger, wifes; '89 LX 5.0 vert, '90 LX 5.0 hatch, '69 M-code Mach 1, 4 speed, 1990 5.0 LX 'vert w/ AOD converted to T-5.
IP: Logged | |
Mustangsandmore Forums
