Temperature on '88 7.3
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Freshman User
Joined: Jun 2004
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Temperature on '88 7.3
I have a 1988 F350 with a 7.3 and a Banks turbo. It's been about 25 to 30 degrees out. I've noticed that the factory guages indicate temperature (not egt) is about half of normal. Also, oil pressure is about half of normal. Normal for this truck in the summer is right on the 'N' in Normal. Is the current temp and pressure bad? Should I consider putting a piece of cardboard in front of the radiator to warm it up a bit?
Junior User
Joined: Nov 2004
Posts: 72
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From: KY
I've got the same Year truck- F350 7.3 5-speed 4X4. No turbo. My temp in winter ranges from below the "n" by about 2 needles to just above the "n". Oil pressure runs between the "m" and "r" . The oil pressure stays pretty constant through the seasons. Hope this helps.
Post Fiend
Joined: Nov 2004
Posts: 5,638
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From: Manitoba
At those temps there should be no need for cardboard, check your fan to see if it is operating at full air flow continually (locked up). It should not, it should only come in when temps are well above the normal engine temps and should normally just tick over until needed. If you can borrow/find a point and shoot temp guage.........
Diesel engine coolant temperature at the top of the radiator where hose attaches after high rpm or under load condition for 20 minutes should be (195-237*F) 91-114*C
Standard cautions when handleing hot engine/coolant apply, nice time to have a temperature reading point and shoot tool.
Diesel engine coolant temperature at the top of the radiator where hose attaches after high rpm or under load condition for 20 minutes should be (195-237*F) 91-114*C
Standard cautions when handleing hot engine/coolant apply, nice time to have a temperature reading point and shoot tool.
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Freshman User
Joined: Jun 2004
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Originally Posted by PLC7.3
At those temps there should be no need for cardboard, check your fan to see if it is operating at full air flow continually (locked up). It should not, it should only come in when temps are well above the normal engine temps and should normally just tick over until needed. If you can borrow/find a point and shoot temp guage.........
Diesel engine coolant temperature at the top of the radiator where hose attaches after high rpm or under load condition for 20 minutes should be (195-237*F) 91-114*C
Standard cautions when handleing hot engine/coolant apply, nice time to have a temperature reading point and shoot tool.
Diesel engine coolant temperature at the top of the radiator where hose attaches after high rpm or under load condition for 20 minutes should be (195-237*F) 91-114*C
Standard cautions when handleing hot engine/coolant apply, nice time to have a temperature reading point and shoot tool.
New User
Joined: Dec 2004
Posts: 24
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Hi I think I would check to see if the Gauges are working ok I have an 88 and I have installed new Mech. temp and oil and trans as well as Turbo pressuer and exhust temp the old gauges never were right somtimes my old oil pressure would show O whene cold out but I would have 60 LBs. These gauges are not much value dont trust them!! JMTCW Roy
Logistics Pro
Joined: Apr 2004
Posts: 4,292
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From: NJ where fun comes to die
Be careful if you have an automatic trans. If you cover the radiator you are covering the trans cooler too. Mine is dead center in front of the radiator.
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New User
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Yes I am Roy from over at TDS but I can not get on the forems over there I dont seem to be able to log in guess I dont know my login or pass word they sent me one but it dosnt seem to work oh well.
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Senior User
Joined: Aug 2003
Posts: 269
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From: Cleveland/Akron, Ohio
I believe there is a dash gage voltage regulator, you may want to check into that since you have more than one gage reading low.
Is the heater/defroster working OK?
I don't trust the stock oil pressure gage, and installed a mechanical one.
Is the heater/defroster working OK?
I don't trust the stock oil pressure gage, and installed a mechanical one.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
The stock guages are not worth having.
What they read compared to a mechanical guage is really funny to watch.
They sometimes give you an entirely false sence of security.
One day my mechanical will read 5 pounds at idle, the dash guage is reading on the l of normal. The next day my mechanical is reading 40 pounds at 2000 RPM and the dash guage is barely up to the L below normal.
JMTCW
Just my two cents worth
What they read compared to a mechanical guage is really funny to watch.
They sometimes give you an entirely false sence of security.
One day my mechanical will read 5 pounds at idle, the dash guage is reading on the l of normal. The next day my mechanical is reading 40 pounds at 2000 RPM and the dash guage is barely up to the L below normal.
JMTCW
Just my two cents worth
Gages
Senior User
Joined: Aug 2003
Posts: 269
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From: Cleveland/Akron, Ohio
Originally Posted by edwardldog
Hey Guys
Where do you put these Guages...
Where do you put these Guages...
Posting Guru
Joined: Sep 2001
Posts: 1,045
Likes: 0
From: Rochester, Washington
Placement of Gauges
I have been contimplating the installation of several new more inproved Gauges ever since my trans burned up from excesive heat, had I seen the tempreture rising I could have stoped and let it cool. But no these trucks don't come with trans temp gauges... 
Anyway I have woundered where to install them so they look proper. A windshield post mount would be right sweet
But no they don't make that Item for an 88 
It's funny how the Auto market sometimes skips years. andf I always seem to be attracted to those years of vehicles. (57, 62, 88)
awwww well
better days we are soon to embark 
Anyway I have woundered where to install them so they look proper. A windshield post mount would be right sweet
But no they don't make that Item for an 88 It's funny how the Auto market sometimes skips years. andf I always seem to be attracted to those years of vehicles. (57, 62, 88)
awwww well
better days we are soon to embark
New User
Joined: Dec 2004
Posts: 24
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Hi all I made A housing out of Fiberglass to put right on tope of the normal cluster it holds 5 gauges oil,water,turbo presure,exht temp,trans temp painted with a wrinkel finsh looks great does not bother when driving and you can not miss them. If I new how to post A photo I would do it for you Roy