Question about 1986 Ford Bronco

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Oil pressure good at startup, after driving 10 or 15 min it gose down and out when stop. but will go up when givin gas. dose not knock or tap. its 86 ford bronco 302

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Oil pump isnt just ford pressure its mostly to move oil around i have the same problems did the oil pump wasnt it

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Try changing the oil pump sending unit relay. if that doesnt work have your oil pressure checked to make sure your oil pump is fine

Posted on Feb 18, 2009

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When pressing on the gas, sometimes I hear a noise like a hot rod taking off. its not a knocking noise but more like a vroom vroom noise. I was told it was the bearings ing the motor.


could be oil pump its self,dode oil pressure go up when throttle is applied,or dose it have a seperate oil chain thats worn,all the best.

Nov 16, 2015 | Cars & Trucks

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1998 chevy 4x4 1500 5.0 in moring after i start it it knocks for a couple of mins then stops runs fine good oil pressure has 86000 miles has been doing it for a couple years


if theres a knock when you start it and it goes a way after it warms up you may be a little low on oil or cuz its a chevy it just needs to warm up before driving naturally a bigger engines gonna take longer for oil to move through all the parts especially in colder weather. maybe even check and see if it needs a valve adjustment.

Apr 26, 2012 | 2003 Chevrolet Silverado Ss

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1995 Ford Windstar Engine Knocking at startup. Driven 2800 miles since last oil/filter change. Oil level SAT, Coolant level SAT and no visible leakage. Engine completely rebuilt 2 years ago. Engine has...


No if the oil light has flickered you have oil pressure loss some time just belive the sensor do help us out. lifter do not cause oil pressure loss pressure is built in the rotation of the crankshaft. The knock under the plenum will point you to that cylinder that is affected, (main bearing) as for a 1995 the injectors can only cause a misfire but no knocking noise,will they honor the warranty

Apr 21, 2011 | 1995 Ford Windstar

1 Answer

After driving for 5 to 10 mins oil light came on then engine started tapping. ended up changing oil and oil filter and still done same thing and now is tapping all the time.


Hello,
It sounds like your oil sending unit is not functioning. When this goes out you lose oil pressure. When the oil pressure drops the oil does not circulate and then your engine does not lubricate and will seize up on you. That's the knocking you are hearing.The oil light is on because of the drop of oil pressure. I would stop driving that vehicle until that oil sending unit is repaired. If you do not repair this at home or where the vehicle is at the you will want to have it towed to the point of repair. You can test the oil sending unit with a pressure gauge beforehand too but it sounds to me like it is bad. Sometimes they are easy enough to switch out. If you give me your make and model and year of vehicle I can list the steps and location for you. Other wise have it towed to a mechanic. I would like to reiterate that you should not drive it anymore until it is repaired. The other thing that it could be is your oil pump. Either way stop driving it.
Regards, Tony

Apr 10, 2011 | Suzuki Aerio Cars & Trucks

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After about 20 min of driving car shuts down and wont start for a few hours. Changed fuel filter, prosiminty sensor, coil, can it be a relay? Is it under hood? Someone told me their friend had the same...


Check fuel pressure first when the car stalls or dose not start. If you get no fuel pressure check if you get any power to the fuel pump if you do replace the fuel pump with stariner and fuel filter to prolong the life of the new pump.

Jan 21, 2011 | 1991 Oldsmobile Cutlass Supreme

2 Answers

My 1991 jeep Cherokee has a knocking sound in valve area. How do I fix


the cure depends upon the problem: Knocking is usually down low and is generally an engine bearing problem. If you hear a tapping noise (lighter than a knock) and oil pressure is good it can be caused by wear of the pivot for a rocker arm, a worn lifter or lifter and camshaft or a broken valve spring. Tapping can also be caused by low oil pressure in which case it can be due to low oil level, obstructed pump pickup or worn engine bearings. If you are unfamiliar with any engine repair, get a chilton or haynes manual to guide you through whatever needs doing.

Mar 13, 2010 | 1991 Jeep Cherokee Limited

2 Answers

Intermittent oil pressure loss at highway speeds


sending unit may be bad. If engine is not knocking or tapping when pressure reads 0 likely that's the case.

Jan 02, 2010 | Dodge Cargo Cars & Trucks

2 Answers

Noking


a knock from the bottom of the motor is a big end bearing STOP DRIVING, new engine or rebuild required, a knock from the rear of the engine could be loose pressure plate on clutch assembly, that is if it is a manual, STOP DRIVING. a rattle from top end is lifters or rockers but you say its a knock so probably not it. one test to do, remove all drive belts to water pump etc and start if the knocking is still apparent then it is internal and time to consider trade in, rebuild or new engine.

May 16, 2009 | 2003 Saturn VUE

3 Answers

Knocking in the engine


are you using the right octang of gas.

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1 Answer

My v.w glof glow light dose not come on?


Most likely ignition switch has gone bad.  Don't need to worry about oil pressure light IF the motor is not running, but IF it IS running, shut down motor immediately until oil pressure can be verified with an external gauge.
good luck

please rate all solutions

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