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Author
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Topic: Running Rich
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Thud
Gearhead Posts: 1115
From: Cumming,Ga.,USofA
Registered: Jun 99
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posted 01-30-2003 07:59 AM
  
I must have done something to PO the Red Truck!I'm getting a "173" code (o2 sensor indicates a rich condition). I've changed the o2 sensor, spark plugs, air filter, and cleaned the throttle body... The problem is still there. Next I'll check out the fuel regulator and, possibly, the throttle position sensor. Anybody got any insights or suggestions? ------------------
"My doctor says I have a malformed public duty gland and a natural deficiency in moral fiber; and that I am, therefore, excused from saving universes." ... Ford Prefect Dwayne M&M Member #18
'94 Lightning #942 of 4007
'70 Mach1
2 '69 Cyclone Spoiler II's (that are for sale)
'65 Galaxie 500 + parts car
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SteveLaRiviere
Administrator Posts: 36138
From: Saco, Maine
Registered: May 99
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posted 01-30-2003 08:23 AM
Any vacuum leaks? Sticky injector? Pull the plugs and see if you can narrow it down to a cylinder.------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Please remember our sponsors,
Mustangs Plus, NPD, Osborn Reproductions, MyFordPerformance.com, and FordRamAir.com
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Thud
Gearhead Posts: 1115
From: Cumming,Ga.,USofA
Registered: Jun 99
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posted 01-30-2003 09:19 AM
I've considered an injector problem, but all plugs looked identical (sooty, but not horrible) so I've kinda backed away from that...------------------
"My doctor says I have a malformed public duty gland and a natural deficiency in moral fiber; and that I am, therefore, excused from saving universes." ... Ford Prefect Dwayne M&M Member #18
'94 Lightning #942 of 4007
'70 Mach1
2 '69 Cyclone Spoiler II's (that are for sale)
'65 Galaxie 500 + parts car
IP: Logged |
SteveLaRiviere
Administrator Posts: 36138
From: Saco, Maine
Registered: May 99
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posted 01-30-2003 09:30 AM
Does it seem to be running well? Can you stall it with your hand?Didn't Lightnings have a problem with the gasket between the upper and lower intake manifolds drying up and causing vacuum leaks? ------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Please remember our sponsors,
Mustangs Plus, NPD, Osborn Reproductions, MyFordPerformance.com, and FordRamAir.com
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Thud
Gearhead Posts: 1115
From: Cumming,Ga.,USofA
Registered: Jun 99
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posted 01-30-2003 10:06 AM
It runs great (especially now with the new plugs and clean air-filter), except at an extended stop (red-light, etc.). It will drop idle RPM then surge to 1100, drop idle RPM then surge to 1100, etc. I've never heard of a gasket problem on old Lightnings, but I've also considered pulling the upper intake to clean it, and clean the throttle body better. Also it makes the fuel pressure regulator and throttle position sensor much easier to access. Oh yes, the check light is intermittent. It's on probably 30% of the time, usually at 35 to 50 MPH.
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"My doctor says I have a malformed public duty gland and a natural deficiency in moral fiber; and that I am, therefore, excused from saving universes." ... Ford Prefect Dwayne M&M Member #18
'94 Lightning #942 of 4007
'70 Mach1
2 '69 Cyclone Spoiler II's (that are for sale)
'65 Galaxie 500 + parts car
IP: Logged |
SteveLaRiviere
Administrator Posts: 36138
From: Saco, Maine
Registered: May 99
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posted 01-30-2003 06:10 PM
Try to stall it with your hand.------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Please remember our sponsors,
Mustangs Plus, NPD, Osborn Reproductions, MyFordPerformance.com, and FordRamAir.com
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Thud
Gearhead Posts: 1115
From: Cumming,Ga.,USofA
Registered: Jun 99
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posted 02-07-2003 07:24 PM
It was the fuel pressure regulator. For some reason the red truck didn't like running with 80+ pounds of fuel pressure at the injectors...  ------------------
"My doctor says I have a malformed public duty gland and a natural deficiency in moral fiber; and that I am, therefore, excused from saving universes." ... Ford Prefect Dwayne M&M Member #18
'94 Lightning #942 of 4007
'70 Mach1
2 '69 Cyclone Spoiler II's (that are for sale)
'65 Galaxie 500 + parts car
IP: Logged |
MLariviere
Moderator Posts: 3578
From: Biddeford,Me.USA
Registered: May 99
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posted 02-08-2003 11:03 PM
Try bumping up the advance?  Can you say P-O-W-E-R!
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4Zsnow
Journeyman Posts: 51
From: Western Washington, USA
Registered: May 2002
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posted 02-09-2003 11:19 PM
LOL.......ignore the "ping noise"
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Thud
Gearhead Posts: 1115
From: Cumming,Ga.,USofA
Registered: Jun 99
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posted 02-10-2003 06:33 AM
It was the regulator. Truck is MUCH happier with 35-40 pounds of fuel pressure.------------------
"My doctor says I have a malformed public duty gland and a natural deficiency in moral fiber; and that I am, therefore, excused from saving universes." ... Ford Prefect Dwayne M&M Member #18
'94 Lightning #942 of 4007
'70 Mach1
'65 Galaxie 500 + parts car
IP: Logged |
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