• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Oil Light

  • Thread starter Thread starter justin82
  • Start date Start date Oct 25, 2017

justin82

Active Member
Sep 14, 2017
334
17
48
Oct 25, 2017
#1
  • Oct 25, 2017
  • #1
is there a reason the oil light pops on, occasionally?

thanks guys
 

Attachments

  • 20171025_145034.webp
    272.6 KB · Views: 157

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
27,829
10,509
203
polk county florida
Oct 25, 2017
#2
  • Oct 25, 2017
  • #2
Whats the obvious answer here?
If your sure the oil level is correct then the sender may be malfunctioning.
Good oil pressure?
 

justin82

Active Member
Sep 14, 2017
334
17
48
Oct 25, 2017
#3
  • Oct 25, 2017
  • #3
justin82 said:
is there a reason the oil light pops on, occasionally?

thanks guys
Click to expand...


didnt search first...my bad, sorry
 

justin82

Active Member
Sep 14, 2017
334
17
48
Oct 25, 2017
#4
  • Oct 25, 2017
  • #4
yes...sorry I forgot to search....I fo9und some posts about it...but according to the gauge, good pressure
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
27,829
10,509
203
polk county florida
Oct 25, 2017
#5
  • Oct 25, 2017
  • #5
It's ok, what year is the car
 

justin82

Active Member
Sep 14, 2017
334
17
48
Oct 25, 2017
#6
  • Oct 25, 2017
  • #6
89
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
27,829
10,509
203
polk county florida
Oct 25, 2017
#7
  • Oct 25, 2017
  • #7
Try and clean the connection and remove the sensor itself and clean it.
 

JD1964

there is enough sticking out to grab on to
15 Year Member
Jun 28, 2013
3,427
1,518
194
Maryland
Oct 25, 2017
#8
  • Oct 25, 2017
  • #8
When exactly does it tend to come on. Cold engine, hot engine, while cruising or at idle?

I bet it comes on at idle with engine at normal operating temp.
 

justin82

Active Member
Sep 14, 2017
334
17
48
Oct 25, 2017
#9
  • Oct 25, 2017
  • #9
when I posted earlier....I went to the gas station, a block away....came out, started it and it was on
 

justin82

Active Member
Sep 14, 2017
334
17
48
Oct 25, 2017
#10
  • Oct 25, 2017
  • #10
engine was cold
 

JD1964

there is enough sticking out to grab on to
15 Year Member
Jun 28, 2013
3,427
1,518
194
Maryland
Oct 25, 2017
#11
  • Oct 25, 2017
  • #11
My bad. For some dumb reason I was thinking oil pressure light which our cars don’t have since they have a gauge instead.

You’re taking low oil warning light.

I’ll say this. Both my 92 and 93 factory dip stick read incorrect. They were saying full when the thing was actually 1 quart low. Ford made a bunch of them this way.

Maybe your dipstick is wrong too. J richker describes a good way to file new marks on the stick. I’ll search and see if I can find it.
 

justin82

Active Member
Sep 14, 2017
334
17
48
Oct 25, 2017
#12
  • Oct 25, 2017
  • #12
on that note....I did check the level yesterday....and the dip stick tube was loose and moved
 

JD1964

there is enough sticking out to grab on to
15 Year Member
Jun 28, 2013
3,427
1,518
194
Maryland
Oct 25, 2017
#13
  • Oct 25, 2017
  • #13
This is a quote from jrichker in a previous thread about dipstick marks being wrong from the factory.

The dipstick is a bigger liar than most fishermen that I have met.

“Drain both front & rear sumps, change the filter and add 4 quarts oil. Start the engine and let it idle 2minutes or so. Shut it off, wait 2minutes for the oil to drain back into the pan. Pull the dipstick out, wipe it off and stick it back in. Pull it out again and take note of the oil level. I marked the dipstick with a scratch from a file at the 4 quart level.

Add the 5th quart, start the engine and let it idle 2 minutes or so. Shut it off, wait 2 minutes for the oil to drain back into the pan. Pull the dipstickout, wipe it off and stick it back in. Pullit out again and take note of the oil level; it won't be anywhere near thefactory full marks. I marked thedipstick with a scratch from a file atthe 5 quart level, which is about 1"above the factory full mark.”
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,167
17,862
224
Massachusetts
Oct 26, 2017
#14
  • Oct 26, 2017
  • #14
How soon until your next oil change??

What I'd do if my light came on is to set up to do an oil change. Drain the old oil, plus oil in the filter into a clean oil pan that doesn't have oil already into it. Dump in your 5 new qts, and then drain all the old oil back into the 5qt bottle and actually measure it.

I believe that light should come on exactly 1 qt low, so if you have 4 qts in the bottle, you are burning/losing oil.


The sensor is located on the pass side of the oil pan, and is a low oil light only.
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
27,829
10,509
203
polk county florida
Oct 26, 2017
#15
  • Oct 26, 2017
  • #15
The magic book for my 89 says it will come on at 1.5 quarts
 
Reactions: Mustang5L5
You must log in or register to reply here.

Similar threads

Engine Catch Can or not?
  • R82148V
  • Mar 4, 2026
  • Fox 5.0 Mustang Tech
Replies
9
Views
311
Fox 5.0 Mustang Tech Mar 6, 2026
ctandc
C
S
Engine How does oil make its way into the front sump?
  • Sock_Monke
  • May 10, 2025
  • Fox 5.0 Mustang Tech
Replies
16
Views
756
Fox 5.0 Mustang Tech May 22, 2025
Chuckster101
C
G
Electrical Getting good ground in 1991 Fox Vert for amps - getting popping noise when I turn on the lights?
  • gvanginkel403
  • Apr 11, 2026
  • Fox 5.0 Mustang Tech
Replies
15
Views
258
Fox 5.0 Mustang Tech May 9, 2026
CAMTWO1070
Electrical Issues with my 2006 mustang gt
  • VerneVdV
  • May 22, 2026
  • 2005 - 2009 Specific Tech
Replies
0
Views
36
2005 - 2009 Specific Tech May 22, 2026
VerneVdV
B
Engine Strange Noise
  • burntokita
  • May 8, 2026
  • Fox 5.0 Mustang Tech
Replies
8
Views
330
Fox 5.0 Mustang Tech May 11, 2026
keel
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?