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Cooling System OlyPen

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Care and Feeding of the Early "Closed Cooling System" By: Craig Houghtaling Photo: courtesy of Matt Tway When discussing the two types of cooling systems the XJ uses, the terms "open" and "closed" are actually reversed, but have come to be accepted that way among the XJ community, so in this article I will hold to them to avoid confusion.

Renix to HO swap MJ Tech: Modification and Repairs ...

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· Recently picked up a fully dressed out of a 97 XJ with a reman 0630 head that has a port for the coolant temp sensor. Supposedly has blow by puffing out the dipstick tube, but I have time to fix this spare engine while getting the frame fixed on the truck, and with two engines the truck will still be mobile with the old engine in it.

COOLING SYSTEM SPECIFICATIONS :: 1984 1991 :: Jeep ...

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COOLING SYSTEM SPECIFICATIONS. 1988 Jeep Cherokee. 1988 ENGINE COOLING. Jeep Cooling System Specifications. Cherokee, Comanche, Wagoneer, Wrangler, Grand WagoneerMAINTENANCE SCHEDULE. Change engine coolant every 12,500 miles or 12 months. Thereafter change engine coolant at the beginning of every winter. season.

Jeep Cherokee Engines RENIX (nonHO) Engine Sensor ...

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This page contains information courtesy of Eric Giordano (JabaThaHut). This page contains an easy to follow set of diagnostics for your early model Jeep Cherokee with RENIX based (NONHO / early)engines sensors.. This information was provided by JabaThaHut and was also posted on Jeeps Unlimited.

coolant temp sensor + wiring MJ Tech: Modification and ...

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· Share. Posted September 29, 2009. The Renix (1990 and older) engines have two coolant temperature sensors. The one in the head is for the temp gauge on the dashboard, the one on the side of the block is for the ECU. Which one are you asking about? On the HO engines, the temp sender is in the thermostat housing.

How to Bleed the closed cooling systems NAXJA Forums ...

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· Posts: 14,192. Re: How to Bleed the closed cooling systems. Doing that lets the water pump push/pull the air through the system more effectively the air in the system will keep the thermostat from absorbing enough heat from the coolant to open quickly, drilling holes lets the air (and a little coolant) by so that the coolant warms the ...

Vacuum lines Pics?! NAXJA Forums :: North American XJ ...

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· Renix Vacuum Harnesses. The vacuum harness that attaches to the front of the valve cover and includes the grommet/fitting, and is called the front harness, is Napa part number BK 7151367. The vacuum harness that is closest to the air cleaner, EGR etc, and is called the rear harness, is Napa part number BK7151366.

Jeep Wrangler How to test a coolant temperature sensor ...

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· Jeep Wrangler YJ Here I show where the coolant temperature sensor is located and how to test if it''s faulty or good. Click the l...

How to diagnose Jeep’s overheating problems –

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· 2. Verify that the coolant is clean with no oil/dirt/rust in it. ** 3. Check for leaks. have a look under the car, look at the hoses and their connections to the radiator/thermostat/engine. 4. DO NOT use regular water as coolant. 5. Check the coolant hoses, replace them if …

How to replace thermostat 90 Jeep Cherokee? Answers

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· Can you swap a 90 Jeep XJ head with a 95 ... 90 is renix, and it has the older style radiator with the ... Replace thermostat as well as rubber gasket. how do i …

Coolant temperature sensor JEEP Cherokee II (XJ) TD ...

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Order JEEP Cherokee II (XJ) 4x4 116 hp Coolant temperature sensor easily at AUTODOC Fast delivery and low prices Discover now for yourself

Jeep Renix Sensors | The Jeep Guru Mike Strawbridge

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· Here are the important sensors that tell your Renix era Jeep engine how to run. The Renix computer was used from 1987 to 1990 and operates very differently from the later MOPAR engine controllers. It was designed through AMC’s partnership with Renault. Parts are still available for most of these from Amazon. Crank Shaft Position …

Electronic FreeServers

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Coolant Temperature Sensor (CTS) The CTS is a device that monitors the coolant temperature. On the ''91 and later Jeep engine, it is mounted in the thermostat housing (see photo below). As the coolant temperature increases, the resistance of the sensor decreases, providing a varying output voltage to the ECU.

Coolant temperature sensor test and change for the Jeep ...

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Coolant Temperature Sensor test for the Jeep Wrangler YJ. Where is the CTS sensor located? On Jeeps there are two coolant sensors. There is one at the front of the engine in the thermostat housing, this one has two wires. Then there is another at the back drivers topside of the engine cylinder head just to the right of the valve cover, this one ...

Jeep Cherokee XJ 1988 1989 1990 1991 1992 Car Service ...

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Jeep Cherokee XJ 1988 1989 1990 1991 1992. Car service, repair, and workshop manuals. Download PDF Now! Lot of car manufacturers and models.

SOLVED: 90 jeep starting problem Fixya

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I have a 1990 jeep cherokee that sometimes will not start,the engine cranks over,but will not start. sometimes you can go days even weeks and will start no of the time when it won''t start you can try after about a half hour and it will time I spent all day tryin until I finally had it towed home, and it started right after it came off the tow truck.

How Do You Do a Radiator Flush on a 1990 Cherokee?? | Jeep ...

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· Fig. 19 Draining Coolant 6Cylinder Engine Drain coolant from engine by removing the drain plug and coolant temperature sensor on left side of block. REFILLING COOLING SYSTEM Remove draining hose. Tighten the radiator draincock and the cylinder block drain plug(s). Fill system using a 50/50 mixture of water and antifreeze.

Cooling system problems on 1990 xj closed system : CherokeeXJ

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Cooling system problems on 1990 xj closed system. Close. 5. Posted by 7 years ago. ... day we had, and now it''s just being a pain. Ok, so I replaced it all, new hoses, new water pump two to be exact, new radiator, thermostat,thermostats housing, ... Look up burping the system through the coolant sensor on the back of the head and do that.

1990 Xj Coolant Temp Sensor VS 1991 Coolant Temp Sensor ...

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· Jeep Cherokee XJ (1984 2001) Modified Tech Discussion ... Aug 20, 2019 1 The 1990 renix coolant sensor is in the block reading coolant temp which would be hotter than the coolant at the thermostat housing. The 1991 coolant sensor is in the thermostat housing reading coolant temp which would be cooler than the coolant in the block.

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