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Joined: May 2000
Posts: 21,197
I have no life
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I have no life
Joined: May 2000
Posts: 21,197 |
Originally posted by SVTN8:
If you find out what the cause of your rich condition is let me know, I've been battling the same deal for well over a year and pretty much parked the car till I find the patients to continue on it.
Is the car tuned? S-AFC? Chip? If not then it's going to run rich.
-'96 SE MTX 3L
-'98 SVT 1,173 of 6,535
-'05 Mazda 6s, loaded, g/f's ride
-Need a 96-00 manual on CD? PM or email me
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Joined: Jun 2004
Posts: 7
Newbie
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Newbie
Joined: Jun 2004
Posts: 7 |
The car has 24 pound injectors with a properly calibrated Pro-M 75mm MAF, as well as an S-AFC and chip. It runs so rich that it toss's miss fire codes like crazy. I have gone back to everything being stock ie 19 pound injectors, stock maf and no afc or chip and I still have the same rich / miss fire condition.. the only thing that I have been able to figure is that it is electrical somewhere because all of the sensors and I do mean ALL have been replaced as well as O2's and IAC.
-Nate
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Joined: Nov 2000
Posts: 2,454
Learned patience the hard way
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Learned patience the hard way
Joined: Nov 2000
Posts: 2,454 |
Sounds like you pinched a wire in the injector harness and have at least one injector stuck wide open due to the short. Time to start checking the injector harness one by one until you find the culprit(s).
Rick
Owner of 00 #1611 Silver (Totalled) 98.5 T-Red SVT #6180
Buckshot77@msn.com
Misc 3L parts for sale
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Joined: Mar 2001
Posts: 1,860
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Mar 2001
Posts: 1,860 |
If you have a multimeter(fluke) or scanner, see what the millivolts read on the O2's. If one bank reads low like 78 and the other is reading 950+ you likely have an injector issue. It will be on the side reading 950+. The 78 is the other bank trying to compensate.
2001 Lincoln LS8
1994 Lexus GS300
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Joined: Jun 2004
Posts: 7
Newbie
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Newbie
Joined: Jun 2004
Posts: 7 |
When testing the injector harness, should I check current through the line from the ecm out or from which points? Or is there a set current that I should look for straight from the individual injector connection? I just picked up the ford shop manual (cd) so I'm going to look through that.
-Nate
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Joined: Jun 2000
Posts: 2,621
Redneck Troll
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Redneck Troll
Joined: Jun 2000
Posts: 2,621 |
I believe Ford breaks the ground side to stop the injectors, then puts ground to the harness to fire. A pinched injector harness on the correct side of the injector clip would fire constantly. I'd be checking each clip for ground on each pin of the connector... Someone correct me if I'm wrong...
http://www.bnmotorsports.com
"And I will strike down upon thee with great vengeance and furious anger those who attempt to poison and destroy my CEG brothers. And you will know I am the Moderator when I lay my vengeance upon you."
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Joined: Jun 2004
Posts: 7
Newbie
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Newbie
Joined: Jun 2004
Posts: 7 |
I checked the injectors to the pcm today according to the ford manual, and came out with around 12.0 ohms to each of them in resistance when going between the test out pin on the pcm and pin 71 on the injector.. I don't know how to check the ground on them, how would I check for ground to them?
-Nate
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