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Why would oil pressure gauge drop to zero when 1999 Jeep is warm and idleing?
Wiki User
∙ 17y ago
Check to see if the oil pressure comes back up when the engine is at running speed. If so, you're seeing evidence of main and/or rod bearing wear. Change to a heavier grade oil. If you've been using an oil with a 5 in the viscosity number, change to a 10 or even a 15. The manufacturer always recommends an oil, but that is for engines that are new. Once the bearings start to wear you need the thicker oil. That's why it's available.
Wiki User
∙ 17y ago
Wiki User
∙ 15y agoWell, it means that your oil pressure is wrong. Either too high, too low, etc. This can be caused by sludge in the engine or it's oil pressure sensor, also your oil level could be too low or too high. Check your oil level and condition.
Wiki User
∙ 11y agoFaulty oil pressure sensor, very common issue on these.
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