Red Engine Light - Ford Truck Enthusiasts Forums

Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Red Engine Light

 
  #1  
Old 07-14-2011, 02:07 PM
bbryson
bbryson is offline
New User
Thread Starter
Join Date: Jun 2011
Posts: 6
bbryson is starting off with a positive reputation.
Red Engine Light

I have an 1989 f250 7.5L 460. I have 2 "engine lights" on my dash one is a orange "check engine" the other is a red "engine" light. the red stays illuminated. My question are:
1- what is the difference between the two
2- what is the red "engine" light telling me.
FYI I have good oil pressure
 
  #2  
Old 07-14-2011, 02:18 PM
subford's Avatar
subford
subford is online now
Post Fiend
Join Date: Aug 2005
Location: Easton,Ks
Posts: 21,694
subford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud of
The Red one is for the engine (oil pressure low, water temp high).
The Orange one is the computer (emission problem, fuel problem, ...).
 
  #3  
Old 07-14-2011, 02:24 PM
BIGskinny
BIGskinny is offline
Senior User
Join Date: Feb 2011
Posts: 403
BIGskinny is starting off with a positive reputation.
Originally Posted by subford View Post
The Red one is for the engine (oil pressure low, water temp high).
The Orange one is the computer (emission problem, fuel problem, ...).
do all trucks have these two seperate lights? or is there a year range of them? thanks
 
  #4  
Old 07-14-2011, 02:39 PM
subford's Avatar
subford
subford is online now
Post Fiend
Join Date: Aug 2005
Location: Easton,Ks
Posts: 21,694
subford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud ofsubford has much to be proud of
I think just the 88-90 had them (maybe also 91) but could be wrong.

But only the ones with a Tachometer had them both.
 
  #5  
Old 07-14-2011, 03:10 PM
bbryson
bbryson is offline
New User
Thread Starter
Join Date: Jun 2011
Posts: 6
bbryson is starting off with a positive reputation.
so if my oil pressure is good and i have had a coolant system test that passed why would the light still be on? besides removing the bulb how do i get the light to go off
 
  #6  
Old 07-14-2011, 03:30 PM
KevinGnWV's Avatar
KevinGnWV
KevinGnWV is offline
The village idiot.
Join Date: Feb 2010
Location: Southern WV
Posts: 1,126
KevinGnWV has a good reputation on FTE.KevinGnWV has a good reputation on FTE.KevinGnWV has a good reputation on FTE.
Originally Posted by bbryson View Post
so if my oil pressure is good and i have had a coolant system test that passed why would the light still be on? besides removing the bulb how do i get the light to go off
How do you know the oil pressure is good? If you have an aftermarket gauge, the sending unit may have been disconnected causing the light.

Also, even if your coolant system "test" passed, that doesn't mean you aren't overheating.
 
  #7  
Old 05-14-2014, 02:06 PM
FordF-250Kid
FordF-250Kid is offline
New User
Join Date: May 2014
Location: Crystal Lake, IL
Posts: 5
FordF-250Kid is starting off with a positive reputation.
Red Engine light

I hate to bump such an old thread, but it seems to be a good one. Last night I was out cruising after I cut my muffler off in my 1990 bricknose F-250, 5.0, 5 speed. The truck has had a motor swap done by the previous owner, and the orange check engine light has been on since I bought it. But all of a sudded the red "ENGINE" light came on so I pulled over and let it sit, while I checked the oil. Then when I started it back up it started running really bad like it was starved for fuel. Then after a few more times checking it all over, I drove it home and it ran fine. I'm not sure, but I don't think it was over heating, I have 2 electric fans wired up to a toggle swich and I kept them on the whole time. Has anyone here ran into a similar problem, and what is every possible trigger for the red check engine light? My friend with the exact same truck with a 351, also cut off his muffler and got the same red light, just like I did the same day. He thinks there's not enough back pressure, But I cut mine under the bed, so there's plenty of pipe. Any help is appreciated.
 
  #8  
Old 05-14-2014, 04:45 PM
jas88's Avatar
jas88
jas88 is online now
Postmaster
Join Date: Feb 2002
Location: Greater Austin, Texas
Posts: 4,887
jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.
The red "engine" light only comes on for low OP or high water temp AFAIK. There is a little module on the back of the instrument cluster that monitors those 2 inputs and turns on the light as needed. It was deleted in the 1991 models but you can add the module from an earlier truck (I have) and it will work as intended.
 
  #9  
Old 05-16-2014, 02:10 PM
FordF-250Kid
FordF-250Kid is offline
New User
Join Date: May 2014
Location: Crystal Lake, IL
Posts: 5
FordF-250Kid is starting off with a positive reputation.
I disconnected my battery, tapped the brakes to get all the power out of it, and let it sit an hour to clear out the "computer". After I started it back up the light didn't come back on. I have no working gauges at all, so if I can get the trans and motor mount fixed, Ill buy some gauges and keep an eye on the temp and oil pressure. I've only owned the truck for about a week, and first it starts running bad so I do a $80 tune up, then it brakes a motor mount so I order new ones, and now all of a sudden 1st and 3rd don't work on the M5OD...
 
  #10  
Old 01-13-2019, 12:13 PM
Kyle Medlin
Kyle Medlin is offline
New User
Join Date: Jan 2019
Posts: 9
Kyle Medlin is starting off with a positive reputation.
Red Engine Light

Why doesn’t my Red Engine Light come on on my 90 f150 xlt lariat??
 
  #11  
Old 01-13-2019, 09:13 PM
vjsimone's Avatar
vjsimone
vjsimone is offline
Old-Timer
Join Date: Jun 2013
Location: Somewhere n North America
Posts: 2,733
vjsimone has a good reputation on FTE.vjsimone has a good reputation on FTE.
Originally Posted by Kyle Medlin View Post
Why doesn’t my Red Engine Light come on on my 90 f150 xlt lariat??
Does it come on when you turn the key to ON/Run position ?
 
  #12  
Old 01-13-2019, 09:26 PM
Kyle Medlin
Kyle Medlin is offline
New User
Join Date: Jan 2019
Posts: 9
Kyle Medlin is starting off with a positive reputation.
Originally Posted by vjsimone View Post
Does it come on when you turn the key to ON/Run position ?
No just the normal Check Engine Light and Charging Light
 
  #13  
Old 01-14-2019, 07:47 AM
vjsimone's Avatar
vjsimone
vjsimone is offline
Old-Timer
Join Date: Jun 2013
Location: Somewhere n North America
Posts: 2,733
vjsimone has a good reputation on FTE.vjsimone has a good reputation on FTE.
Originally Posted by Kyle Medlin View Post

No just the normal Check Engine Light and Charging Light
I'm quessing your bulb is out or loose in the socket..
Could be other things, but I would check the bulb.
 
  #14  
Old 01-14-2019, 08:48 AM
jas88's Avatar
jas88
jas88 is online now
Postmaster
Join Date: Feb 2002
Location: Greater Austin, Texas
Posts: 4,887
jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.jas88 has a great reputation on FTE.
Or your instrument cluster does not have the module on the back that controls the Engine light.
 
  #15  
Old 01-14-2019, 12:21 PM
Kyle Medlin
Kyle Medlin is offline
New User
Join Date: Jan 2019
Posts: 9
Kyle Medlin is starting off with a positive reputation.
Originally Posted by jas88 View Post
Or your instrument cluster does not have the module on the back that controls the Engine light.
Where can I get a module if it doesn’t have one??
 

Thread Tools
Search this Thread
Quick Reply: Red Engine Light


Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.