03-04-2006, 10:05 PM
|
#1
|
|
AF Regular
Join Date: Jun 2005
Location: huberheights, Ohio
Posts: 310
|
Oil Pressure!!!!!!!!!!!!!!!!!!!!!!
88 f-150 302 5.0 V8 5spd manual.
start it up pressure is fine, drive it around and it gets warm (normal temp) oil pressure drops. well not while driving unless its a 35mph zone and im in 4th, but if its warm and im at a stop light, oil pressure drops to 0 and engine idol drops reallllllllly low...what is causing this?
me and a buddy figured maybe the rods and main bearings?
cam?
burnt valves?
collapsed lifters?
clogged oil screen?
bad oil pump?
__________________
oh, u got pistons.....ha u F****n blow, get rotors 
|
|
|
|
03-05-2006, 06:55 PM
|
#2
|
|
AF Enthusiast
Join Date: Jan 2004
Location: Under a Truck
Posts: 1,496
|
Re: Oil Pressure!!!!!!!!!!!!!!!!!!!!!!
Bad oil pressure SWITCH.
You see, you do NOT have a true oil pressure gauge, but what is commonly called an "idiot gauge" because it is more like an idiot light, on or off.
Below about 6 psi of oil pressure, the SWITCH is closed, and the "gauge" reads "0" psi, above about 6 psi the gauge reads about 40% to 50% "scale".
Most likely, the switch is just bad. It is located near the oil filter, and has ONE wire going to it.
|
|
|
|
|
03-05-2006, 11:25 PM
|
#3
|
|
AF Regular
Join Date: Jun 2005
Location: huberheights, Ohio
Posts: 310
|
Re: Oil Pressure!!!!!!!!!!!!!!!!!!!!!!
thank you......
__________________
oh, u got pistons.....ha u F****n blow, get rotors
|
|
|
|
|
03-06-2006, 01:08 PM
|
#4
|
|
AF Newbie
Join Date: Feb 2006
Location: Alexandria, Louisiana
Posts: 51
|
Re: Oil Pressure!!!!!!!!!!!!!!!!!!!!!!
I have the same problem and the dealer said that it was bad main bearings, but I think it could be the high pressure relief valve. I won't know until I have it truely diagnosed at my mechanic and he takes off the oil pan.
|
|
|
|
|
03-08-2006, 12:24 PM
|
#5
|
|
AF Regular
Join Date: Jun 2005
Location: huberheights, Ohio
Posts: 310
|
Re: Oil Pressure!!!!!!!!!!!!!!!!!!!!!!
alright well thansk for the advise guys, guess ill just drive it till i get the money to do a rebuild on it, thanks
__________________
oh, u got pistons.....ha u F****n blow, get rotors
|
|
|
|
|
03-10-2006, 05:41 PM
|
#6
|
|
AF Newbie
Join Date: Mar 2006
Location: Rea, Missouri
Posts: 8
|
Re: Oil Pressure!!!!!!!!!!!!!!!!!!!!!!
mine does the same thing, but it does not knock or anything, only its a guage, I was told that ford did not put the right resister in the oil sending unit wire ---- so your computer is not reading the actual pressure the sending unit has on it --------
you can buy the right resister ( cut wire - add in resister) , I found my local NAPA guy has it for around $25.00,
|
|
|
|
|
03-10-2006, 05:43 PM
|
#7
|
|
AF Newbie
Join Date: Mar 2006
Location: Rea, Missouri
Posts: 8
|
Re: Oil Pressure!!!!!!!!!!!!!!!!!!!!!!
try the oil pressure sending unit first, thats the most simple fix, if you know someone that is a mechanic at a FORD dealer, they might be able to help ( thats how I found out ford goofed on the resister)
|
|
|
|
|
DriverSide Home |
Service & Repair |
Car Prices |
Parts & Accessories |
Reviews & Advice |
My Garage
