MountiansRcool

hi i recently replaced my TPS sensor because the old one blew out.

after i put the new Throttle Position Sensor on my RPS went from around 700 at idle to about 1200

also my oil pressure went from around 70psi at heavy throttle to over 80.
at idle it was around 40 and now at idle its around 70??

cranesrule

Oil pressure goes up as rpms go up... Hence the difference now that you are idling higher. Need to know the year of your Jeep - your TPS might need adjustment if you have a renix, or may have just been bad out of the box.

cruiser54

Your TPS is not adjustable.

Did you remove the throttle body to change it? If so, and you didn't use a new gasket, a vacuum leak can cause high idle.

Your Idle Air Controller could be gummed up also.

70 psi at idle usually indicates a faulty oil pressure sender. I don't believe your change in gauge reading is due as much to RPM as it is the sender crapping out on you.

cruiser54

FYI, Renix was used 86 to 90.

MountiansRcool

oil pressure sendor is about a month old i have a 96 and no i didnt take off the trhottle body

cruiser54

Ever clean the throttle body and IAC?

Courtesy of TJWalker:
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The Idle Air Control (IAC) is mounted on the back of the throttle body. (front for 87-90) The valve controls the idle speed of the engine by controlling the amount of air flowing through the air control passage. It consists of a stepper motor that moves a pintle shaped plunger in and out of the air control passage. When the valve plunger is moved in, the air control passage flows more air which raises the idle speed. When the valve plunger is moved out, the air control passage flows less air which lowers the idle speed. Over time and miles, the IAC can get carboned up which can have an adverse affect on idle quality. Cleaning the IAC may restore proper function and is an easy procedure to perform and good preventive maintenance so it is never a bad idea.
CLEANING THE JEEP 4.0 IDLE AIR CONTROL
Remove the air filter cover, associated hoses and the rubber boot that goes from the air filter cover to the throttle body. Remove the IAC with a torx driver (2 bolts; one can be kind of hard to get to)
“Gently” wiggle out the IAC from the throttle body. Gasket on the IAC can be re-used if it is not damaged
Clean the IAC with a spray can of throttle body cleaner; inexpensive and available at any place that sells auto parts. Throttle body cleaner is recommended rather than carburetor cleaner as it is less harsh, safe for throttle body coatings and is best for this task. Use cleaner, a rag and a toothbrush and or Q-Tips. Be gentle; don’t twist or pull on the pintle that protrudes from the IAC as it is fragile and you could damage it.
Thoroughly spray clean and flush where the IAC seats in the throttle body with the same spray cleaner
It is also a good idea to clean the entire throttle body itself, the butterfly valve inside of the throttle body and all associated linkage as long as you have things disassembled

Unless you can verify the oil pressure with a gauge, I say your sender is bad, or you have a cheapo oil filter that's restricting the flow.