lots problems at once
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Junior User
Joined: Dec 2007
Posts: 85
Likes: 0
From: New Orleans, LA
lots problems at once
first a little truck info
'99 F-250 diesel 7.3
174,000 miles
new transmission w/ 5,000 miles on it
regular oil and fuel filter changes
6 month old alternator and batteries
mods:
4" exhaust
superchip programmer
air intake
problems:
battery light stays on when ignition off but off when running
rough idle like its missing
white smoke at start up even when engine is warm (stays smoking at idle)
11 mpg in city
13 mpg on hwy running 65-70 mph
lack of power
boost max= 18lbs.
trans temps. 190 on hwy 195 in city (ordered trucool trans cooler)
egts= 700-800* on hwy at 70mph
yesterday a tapping sound on drivers side after 2andhalf hour trip then quit about an hourand half on the way back
codes:
p0603
forget code but exhauts back pressure sensor circut(going to replace tube and sensor)
any help would be great
'99 F-250 diesel 7.3
174,000 miles
new transmission w/ 5,000 miles on it
regular oil and fuel filter changes
6 month old alternator and batteries
mods:
4" exhaust
superchip programmer
air intake
problems:
battery light stays on when ignition off but off when running
rough idle like its missing
white smoke at start up even when engine is warm (stays smoking at idle)
11 mpg in city
13 mpg on hwy running 65-70 mph
lack of power
boost max= 18lbs.
trans temps. 190 on hwy 195 in city (ordered trucool trans cooler)
egts= 700-800* on hwy at 70mph
yesterday a tapping sound on drivers side after 2andhalf hour trip then quit about an hourand half on the way back
codes:
p0603
forget code but exhauts back pressure sensor circut(going to replace tube and sensor)
any help would be great
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
What kind of air intake do you have? Does the truck use oil? How long does the battery light stay on when the key is off? Is it on permanently, or does it go off after a couple of minutes?
I like Jay's idea about checking the boots to make sure they're tight. Have you considered cleaning the EBP tube? Some of the 99's had problems with small leaks in the on the drivers side that would drip on the back of the fuse panel. That might explain your battery light issue. Next time it rains you might pull the fuse panel out and see if there's any signs of moisture there.
I like Jay's idea about checking the boots to make sure they're tight. Have you considered cleaning the EBP tube? Some of the 99's had problems with small leaks in the on the drivers side that would drip on the back of the fuse panel. That might explain your battery light issue. Next time it rains you might pull the fuse panel out and see if there's any signs of moisture there.
Thread Starter
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Junior User
Joined: Dec 2007
Posts: 85
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From: New Orleans, LA
[quote=F350-6;6268091]What kind of air intake do you have? Does the truck use oil? How long does the battery light stay on when the key is off? Is it on permanently, or does it go off after a couple of minutes?
k&n cold air intake system
the truck doesnt burn oil
the battery light is always on when the ignition is off
the smoke out the exhaust smells like lighter fluid (first thing that came to mind when i smelt it)
im just worried its an injector problem b/c i heard its $$$$ but i dont really know how much they are
k&n cold air intake system
the truck doesnt burn oil
the battery light is always on when the ignition is off
the smoke out the exhaust smells like lighter fluid (first thing that came to mind when i smelt it)
im just worried its an injector problem b/c i heard its $$$$ but i dont really know how much they are
Hotshot
Joined: Jul 2003
Posts: 12,177
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From: Newport, WA
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Junior User
Joined: Dec 2007
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From: New Orleans, LA
im just trying to get some things done to it before i go back to school and i will be driving 100 miles in a couple weeks for a few weeks
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Thread Starter
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Junior User
Joined: Dec 2007
Posts: 85
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From: New Orleans, LA
i just tried it and when i pulled the plug on the alternator the light went off
what does that mean?
what does that mean?
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
with the alternator plugged in the orange wire should be hot at all times but the other should not
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Junior User
Joined: Dec 2007
Posts: 85
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From: New Orleans, LA
but when i check one of the batteries i had 12.3 on the post and 10.5 on the connection to the post so that should be a dirty connection problem
the other problems is what worries me and it seems to take a second longer to start up than usual
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
Clean all battery connections and coat the terminals with noalox before putting the clamps on. This will help with conductivity and also help to stop corrosion. Do you know how old the batteries are? Low batteries can cause all sorts of problems with these trucks. You may want to consider changing out both batteries.
Thread Starter
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Junior User
Joined: Dec 2007
Posts: 85
Likes: 0
From: New Orleans, LA
Clean all battery connections and coat the terminals with noalox before putting the clamps on. This will help with conductivity and also help to stop corrosion. Do you know how old the batteries are? Low batteries can cause all sorts of problems with these trucks. You may want to consider changing out both batteries.
they were both replaced in november