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  #1  
Old 06-05-2013, 06:35 PM
freakinbox freakinbox is offline
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Default No oil pressure at low idle

The issue popped up after the cam synco went. I put an electric oil gauge in and it still came up with no oil pressure (Mechanical gauge to test it will be in about a month). I figured with the cam syncro as bad as it was that it must have damaged the oil pump. It's fine when cold but once it hit about a quarter of the temp gauge it would come on under 1000 rpm and once half way (fully warm) it would be around 1100 or 1200 rpm.

Just change the oil pump, the old one had a lot of grooves and scrapes inside of it so I went and got a new one. Now the difference is that is has to be fully warmed up and it's around 900 rpm that the light comes on and the electric gauge will read 0.

I was also worried I would fine a large amount of metal shavings in the pan but nothing other than a few specks here and there (reasonable considering how bad my cam syncro was..).

Only thing I can think to do at this point is run heavier weight oil, I see the usual suggestion is 5w30 or 5w40 instead of 5w20, and then pray the problem goes away. Really don't have the time or money currently to replace the bearings (thinking that might be the issue).
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  #2  
Old 06-06-2013, 11:03 AM
GLH GLH is offline
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Default Re: No oil pressure at low idle

You better be running 5w20 Motorcraft in Ontario after September, or thinner.
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Old 06-08-2013, 02:13 AM
freakinbox freakinbox is offline
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Default Re: No oil pressure at low idle

5w20 Castrol GTX currently. Before that it was w/e oil that oil changers used. I can switch back then to see what happens but for now I have to figure something out so I don't have to hold the gas pedal down at stop lights lol. Besides from what I understood 5w20 vs 5w 30 or 40 when cold they were the same.. the difference kicked in when they warmed up.

Last edited by freakinbox; 06-08-2013 at 02:18 AM.
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  #4  
Old 06-08-2013, 11:21 AM
rangerlocal rangerlocal is offline
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Default Re: No oil pressure at low idle

Your oil choice has nothing to do with it. If the bearings were worn that bad you'd have a light at idle too. My bet is on the sending unit.
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Old 06-09-2013, 02:20 AM
freakinbox freakinbox is offline
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Default Re: No oil pressure at low idle

It comes on under 1000 rpm. Unfortunately it is on at idle. It hit me yesterday that maybe it's a possibility the new cam syncro is causing this.. I bought an aftermarket part instead of the ford one, $80 instead of the very over priced $270 the dealer wanted. Either that or the metal shavings from the old cam syncro gear damaged my main bearings, there was a good amount of metal from it given a good section of the teeth on the gear were almost completely worn off.
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Old 06-09-2013, 07:33 PM
rangerlocal rangerlocal is offline
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Default Re: No oil pressure at low idle

I would try the sending unit first. Use a vacuum gauge to determine whether or not your engine is totally worn. If you had a decent oil filter, the bearings should be ok. Clearances are pretty tight, even for metal shavings, so it's pretty hard for them to work their way in with a decent filter. I'd try the sending unit first, but usually an idle oil pressure problem is the pump. Did you check the mating surface gasket when you installed it? Maybe it got nicked or folded?

By the way, if you wanted to get the job done with the good part, Rock Auto has the motorcraft synchro for $94.
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cam syncro, heavier weight oil, low oil pressure

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