Mercruiser 454 oil temp MerCruiser 7. 4l (454) V8 MPI sterndrive from 1998 s/n = 0L068756 Attached image is of the sender. The oil levels at gear and engine are fine, (so are steering and trim flaps, but these are not monitored by the electronics as far as I know) So I have been locating switches/sensor one the engine block to eliminate errors. Also for: Mercruiser mcm 502 mag mpi, Mercruiser mie 454 mag mpi horizon, Mercruiser mie 8. 805218T Engine Coolant Temperature Gauge Sender - MerCruiser. Consult your Authorized Mercury MerCruiser Dealer before attempting this procedure. Ft. He jumped out block sensor and it stopped the buzzing from occuring. On a brighter note, yours sounds like my buds 502, it's been that way for 5 years EMP 75-24301 MerCruiser/Volvo Oil Pressure Sender This oil pressure sender is intended for use with Volvo, MerCruiser, & OMC terminals and meets all OEM requirements. 4l bravo (mpi)(gen. Mar 14, 2015 · I stick with the Mercruiser 25w40 Synthetic Blend, but my manual (1999 Merc 4. 3) recommends in this order: 1. 4 MPI? Well, I got the boat out on the water this weekend and got everything all warmed up. Above idle 50/60 lbs hot. 454 MAG MPI Bravo (GEN VI) GM 454 V8 Dec 12, 2012 · My intake has a port on either side of the thermostat housing that I use for the 2 sending units. The reason for this is that I get low oil pressure alarm going on when backing off from crousing speed, and it takes 1-2 minuts for the alarm to shut off. I. Remote Oil Filter Adapter Nut/Fitting Seawater Pump Brace Seawater Pump Bracket Spark Plugs Starter Motor Thermostat Housing Torsional Damper Transmission To Housing Water Circulating Pump Water Temperature Sender Index 3A-2 - 454 C. I've been studying the cooling system in the manual (Merc's #16 for the 1994 454 B-III) but don't see any mention on where the temp sensor is in the system or see anything in the manual about it. Jun 25, 2003 · General Q & A - Alarm buzzes, temp gauge ok - A friend has a 454efi, the engine block temp sensor is causing ECM to activate alarm. $39. 4L) / 502 C. Questions Jan 1, 2005 · 1. 4l mpi, Mercruiser mie 7. As synthetics are much less volatile they don't "boil off" and cause the oil to thicken and form sludge by at least 50% or more and that is a huge advantage. On a brighter note, yours sounds like my buds 502, it's been that way for 5 years Jun 15, 2012 · Re: 1993 Mercruiser 7. If my oil temps are low I will run a high water temp, up to 180 max Jun 27, 2012 · We have the Mercruiser 454 mag 4 bolt main and have a water temp sensor in the water thermostat housing and an oil pressure sensor on the back of the motor by the oil filter. (8. . Ran great for a couple hours with perfect operating temp. vi gm 454 v-8 1998-2000 senders and harness bracket parts. Oil Pressure Sender Application: For Volvo 1973 & later 4-Cyl 72-150HP; Feb 18, 2010 · Oil Pressure Sender Sensor Sending Unit For Volvo Penta Mercury Mercruiser Marine OMC,815425T 3857532 18-5899 8M0068784 815425 90806 90806A1 834920 872063 0509445 Jan 8, 2014 · I've been reading horror stories of the damage caused by over heating, and want to make sure I can avoid the same issues. Not seeing a temperature alarm switch on that engine, just a low oil pressure alarm switch and a drive unit oil level alarm switch. Intake hose in the transom assembly sucking down and or clogged. Jun 23, 2010 · You can depend the oil will get hotter and thinner under load in the water. You can remove the inlet hose to the cooler to see if 'stuff' is blocking it. Super Premium synthetics outperform conventional 1994 Baja 272 with a 454 Mercruiser . There's a temp sending unit in the tstat casting and another in the intake manifold. The MerCruiser 454 marine engine, manufactured by Mercury Marine, is used to power the stern drive in many boats. The temp gauge/sensor is reading 140 at time of occurance. Engine is Mercruiser 7. 0L engine? I decided to check the temperature with an IR thermometer gun on my engine and found the oil filter was at 220 degrees after running it hard for about 20 minutes. Jun 20, 2007 · Carbed 454, Bravo 1, original Mercruiser stock stainless manifolds, 640 hours, freshwater use. 4L 454 High Temp/Overheating The oil cooler should be located on the port (left) side of the engine down low. The gauge was saying 175-180 again. Jul 17, 2014 · The gauges show low temp (or stable if engine have been on for a while), oil pressure at 40 at idle and 60 at higher revs. 4 A special procedure must be followed to check or adjust timing. Using the proper oil in the MerCruiser 454 engine will aid its longevity. vi) gm 454 v-8 1998-2000 standard cooling system parts. So it looks like everything is fine, and the motor is running nice and cool. Happens when he gets up on plain after about 30 seconds. The oil gauge is reading anywhere between The temp will usually climb just a little above the normal operating temp and then it will drop down a little when the thermostat opens up. $67. Straight 30w or 40w based on primary operating temperature. Idle a few minute and drop to 180* and oil pres up to 40/45. . MerCruiser MCM 454 Mag MPI engine pdf manual download. It is a large engine, adequate for water-sports towing, and is generally used in larger runabouts and cruisers. View and Download Mercury MerCruiser MCM 454 Mag MPI service manual online. (7. It will rise a little bit when im in neutral. 2. What is normal oil temperature on a Mercruiser 3. Sep 24, 2011 · All I can say is that my '92 454 Mercruiser sits right around 40-50 psi on the oil pressure cold and a solid 40 psi when hot (30-35 at hot idle) and temp stays right on 160 deg when at temp. 2l mpi, Mercruiser mcm 7. 50. D. The block low down ranged anywhere from 150-240 degrees. The later Gen V and Gen VI 454's tended to have the 160 thermostat. BRACKET, Oil . 4l mpi mie (l29) gen. Thanks much ! Reply Jul 17, 2014 · My Mark IV 454 would run 150-160 all day long. Feb 6, 2021 · The alarm is a different sensor than the gauge. In terms of flow, check the oil cooler that is inline between the sea water pump and the t-stat housing. 454 MAG MPI Bravo (GEN VI) GM 454 V-8 Page 6 Torque Specifications (Continued) DESCRIPTION Lb. and when I got the area near temp sender at the thermostat with my temp gun it was reading 155-160. Quantity 8M0068784 Oil Pressure Instrument Sender. The sensor wire is blue / tan. I'm trying to figure out why neither of the temp gauges work in my 'new to me' boat. Aug 22, 2008 · mercruiser alram Water temp is below 180 Oil Pressure is around 40 and appropriately reponds with engine revs. 143 thermostat as I recall. I run the oil through the remote filter than the cooler. We have left over wires that our manual states the tan w/ blue line is for a water temp sensor and a solid light blue wire for oil pressure. The alarm comes to the main round engine connector on the tan / blue wire. But my gauges have actual indications on them, verified accurate by connecting mechanical gauges in tandem to test and to compare. 58. 4l mpi. Mercruiser 25w40 2. Jun 5, 2012 · Can someone tell me what my oil pressure and water temp should be at for a 1990 mercruiser 454? My temp gauge for the most part doesn't move off of the lowest spot on the gauge while underway (about 100-120). I didn't think the older 454/502 MPI motors had Aug 19, 2013 · Re: Correct operating temp for 7. 6 Idle speed on EFI models is not adjustable. 806490T Engine Water Temperature Gauge Sender - MerCruiser. running temp with 160 thermostat is now right at or about 160 at 2500-3000 rpm in the water . I have a Mercruiser 3 Measure using an accurate service tachometer with engine at normal operating temperature. as far as the oil temp, I have a remote filter that I mount the oil temp sender in. Some marine-grade Jun 23, 2010 · You can depend the oil will get hotter and thinner under load in the water. I suspect that you have a flow issue somewhere, or a grossly inaccurate gauge/sender combo. I run 20W/50 Royal Purple and have 75/80 lbs at cold idle 20/25 at idle at 220* oil temp. Buy a genuine Mercury Quicksilver or aftermarket part. oil cooler clogged with old impeller parts broken off a destroy impeller. May 15, 2005 · Synthetics outperform any and all conventional oils in their ability to handle much higher engine oil temperatures and piston shear. 2L) 90-823224--2 796 Mar 12, 2017 · General Q & A - Oil pressure sending unit BBC - Hey can anyone show and tell me where the oil pressure sending unit is for a Mercruiser 1998+ 454 mag? Sep 22, 2014 · Hi, I have a Mercruiser 454 Magnum/Bravo I (0F352752)and it was starting to run hot so instead of pulling it out of the water, I had my marina take a look and they replaced the thermostat and raw water impeller/housing. The engines are mid 80's Crusader 270hp, raw water cooled. 350 hp and Bravo 1 . gqnx vsqbe suwn iobz ceohpdl ksvsk udem scjc qcpgg zbypqol gvhxwmg jeal immezbf yzpw eevs