![]() this is not an engine swap application), then retain the factory switch to keep the “check gauges” indicator from turning on and use a variety of hardware store-available brass fittings or performance shop fluid fittings to build a T to house the factory switch and your new sender. If your vehicle has a factory designed gauge to work with this motor (i.e. Some engines will only have one port, which the factory oil pressure switch is already utilizing. The appropriate adapter will come supplied with your AutoMeter Oil Pressure gauge. Some engines will have a second available port above the oil filter, next to the factory oil pressure switch. ![]() Note: We do not recommend mechanical temperature gauges for this installation due to the shallow coolant passage depth (The mechanical probe may bottom out resulting in damage to the gauge or improper sealing).įor oil pressure, there are several different options. The metric adapter number for our electric gauges is AutoMeter Model #2268. If you have a plug that uses a regular box-end wrench or socket to remove (external hex), then this will be a metric, 16mm x 1.5 thread. All of our electric gauges come with this adapter. If it uses an Allen wrench (inverted hex) to remove, then this is going to be a 3/8” NPT. To identify which size your port is, simply look at the plug that is threaded into the hole. From our experience, everything 1996 and later has this port. It has been rumored that some of the earliest modular motors (from around 1992 to 1995) may not have this port. Remember to let the engine cool completely, wear eye protection, and be ready with a catch pan, as removal of this plug will result in a geyser of coolant. This port will be one of two different sizes, which are either 16mm x 1.5 or 3/8” NPT. ![]() If the engine is installed while you are performing this installation, you will most likely need to locate this from underneath the vehicle. These points will be helpful whether you are working on an original equipment engine or a swap application.Ī convenient water temperature port can be found on these engines on the left (driver’s) side of the engine block, below the last freeze plug. Retest system.Today, we are connecting Water Temperature and Oil Pressure gauges to a Ford 4.6L Modular Motor. If resistance is greater than 5 ohms, repair open Red/White or Pink/Orange wire. If resistance is less than 5 ohms, repair/replace instrument cluster. Disconnect instrument cluster harness connector C237. Check Red/White Wire & Pink/Orange Wire For Open - Turn ignition off. If resistance is less than 10 k/ohms, repair short to ground in Red/White wire. If resistance is more than 10k/ohms, repair/replace instrument cluster. Measure resistance between instrument cluster harness connector C237 pin No. Check Red/White Wire For Short To Ground - Turn ignition off. If temperature gauge does not indicate hot, go to step 5). If temperature gauge indicates hot, replace coolant temperature sensor. By-Pass Temperature Sensor - Connect a jumper wire between the 2 pins of temperature sensor harness connector. If resistance is less than 10 k/ohms, repair Red/White wire. If resistance is more than 10 k/ohms, go to step 4). Measure resistance of Red/White wire between coolant temperature sender connector and ground. If temperature gauge indicates cold, go to step 3). If temperature gauge indicates does not indicate cold, go to next step. Disconnect Sensor - Ensure temperature sensor connector is in good condition.
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