2000 Ford Ranger oil presure gauge low on cold start up

Tiny
TBL127
  • MEMBER
  • 2000 FORD RANGER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 93,500 MILES
Just recently I noticed that when I start my vehicle in the morning after it has been sitting all night the oil presure gaguge will been showing low after pressing the accelator for a min the guage will rise slightly and after the vehicle warms up the guage showes to be in the proper place. For the rest of the day the guage will show proper pressure and the vehicle drives fine. The guage only show low upon a cold start untill the vehicle warms up for a min or two what could be the cause of this.
Thursday, September 18th, 2008 AT 8:24 PM

3 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Could be a bad sender, but some of those Rangers had a fuel slosh module that also had the oil pressure gauge running through it (dont ask me why). Installing a seperate manual gauge will tell you what the pressure is really doing so you can verify it is oiling properly
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Monday, March 29th, 2021 AT 7:44 PM
Tiny
02CHARGER
  • MEMBER
  • 14 POSTS
Yes you need to get a real oil pressure gauge all ford oil gauges since mid 80s are just a switch that puts the gauge in the normal range if it has any oil pressure at all I have been waiting for a class aciton lawsute over this dont bellive me get a wiring schamatic for any ford 88 to 2004
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Monday, March 29th, 2021 AT 7:44 PM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
The oil pressure gauge goes through the same "slosh module" as the fuel gauge. Have seen a ton of problems with them
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Monday, March 29th, 2021 AT 7:44 PM

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