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porscha
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cold strat no oil pressure ?
20-w50 oil where to start ? oil sleeve on crank ? or change oil before starting this
after about 2minute of oil i have my ped'ed 5 bar oil pressure
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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06-11-2011, 12:43 PM
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SLED GUITARIST
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Maybe the sender is malfunctioning.
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1988 944S Guards Red---Hers FRWilks Chip, MSD Blaster 2 1987 944S Blue Diamond Mine Crankscapper, MSD Blaster 2 Coil, Weltmeister Race chip, Sports pack. Hit by a sleeping driver at 2pm, soon to be the Black and Tan 1985 944na Gray---His Eibach Gound Control Struts/Koni Rear, Throttle Response cam. SOLD 
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06-11-2011, 12:47 PM
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Registered
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if you don't heard noise valve then maybe is the sender or gloged canal
if you heard valve noise before the oil pressure goes to 5 bars there will be a serious problem(opstruction in a canal,oil pump,broken oil pick up tube.. take a look again on the level of oil,maybe is too low? did you change water/oil exchenge gaskets(relive valve centered)
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porsche 924 carrera gt 90% ready porsche 944 NA 86' half 951 951 full project for 944 chrysler 300M 6 x 924 and 944 canibalized or death |
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06-11-2011, 01:33 PM
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Registered User
Join Date: Mar 2011
Posts: 31
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you oil pressure relive valve has a o ring that is bad take off oprv and replace new Green o ring!
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06-11-2011, 03:44 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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+1^
matty, If you have the "late" 1 piece OPRV there are 2 "O" rings on it. The "inner" (deep in engine) "O" ring is at the bottom of the OPRV, and can be replaced easy. The "outer" (closest to surface of engine) is hidden. See post 6 to understand how to change the outer "O" ring. "O" ring number 5 in picture. Spec for oil pressure relief valve? GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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06-11-2011, 04:22 PM
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Automotive Necromancer
Join Date: Nov 2006
Location: Beantown, MA
Posts: 1,544
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lubrication
How cold is it? You are not running 20-50 in the arctic are you?
Have you looked at Clarks procedure on no oil pressure? IIRC it has something about priming the system. Have you checked the electrical connections to the sender?
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There may be nothing quite as expensive as a cheap Porsche: Ruby Red 84 928S : White 87 924s 2.5L NA (Blinky) M44/07-43H10676 spoiler delete - 046/2B - Belts 9/12, Clutch and OC seals 8/08 andd Red 94 Del Sol: Please put your Make, Model and Year in Sig. Try not to break more than you fix. |
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06-11-2011, 08:31 PM
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Registered
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so you have oil pressure when it heats up? I had this issue that developed over time. Everyday, the pressure would start lower from the previous. Turned out my to be my oil suction tube (or pickup tube as it is also called). It was developing cracks and as the car warmed up, the tube expanded, sealing these cracks, eliminating my problem.
The oil pressure relief valve (OPRV) and the pressure sender seem to be much more common issues though, and you should check those first. If it is your sender, you won't hear any valve noise. I think you can test this with a multimeter as well. If it is your OPRV, you can remove it and crank the engine over (remove the DME wire first so it doesn't start!) if oil sprays out the OPRV hole, you need to replace or rebuild the OPRV. If nothing comes out the OPRV hole, welcome to my world. Time to pull off the oil pan and check the suction tube. The process isn't hard really, you do need a tie rod separator beyond basic tools, but is just time consuming. Also, I ordered my new one through Porsche and it is a 7 business day wait. So plan on this too. Good Luck, I hope it is a loose wire on the pressure sender! 
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was: '85 300 ZX, '87 944 NA is: '90 944 s2 coupe |
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06-12-2011, 10:12 AM
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porscha
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sadly i have valve noise..... this started happening 2weeks ago ( i take the car out 1 a week and that week was a 2week waiter ) so i plan on checking the OPRV with those orings ! and my sender works well seems to work with its 5bar peg'd loll but all look in to the oprv soon like this week end ! i have to look on clarks where it is 1st and no i didnt change my AOS ? air oil seperator or Oil tube orings either !
where is this valve situated anyways ? im going to change my oil to 5w50 Syntec this week end if its not the valve we arent getting the heat we are supposed to in canada these days we are at 10-15 Celcius when i planed it would be 30-35.... maybe 10-w40 would do the trick !
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec Last edited by matty89; 06-14-2011 at 06:04 PM.. |
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06-14-2011, 05:36 PM
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Registered
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matty89: OPRV is right under the oil filter. Easily accessible from the bottom, extremely easily accessible with the wheel off.
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was: '85 300 ZX, '87 944 NA is: '90 944 s2 coupe |
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06-14-2011, 08:57 PM
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porscha
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all see if oil comes out ofd the OPVR and if my sender unit is in the resistance specs ! u guys dont think its because its to much 20w50 its only 15-20 celsius outside now we are gettin 20-25 so i might try the car once more !
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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06-16-2011, 02:49 PM
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porscha
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so to test my Oli pressure valve all i have to do is take it out and crank the engine ? and take out the DME relay ? if oil comes out of the hole i need ot replace the valve or else i have an other problem ?
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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06-18-2011, 11:45 AM
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porscha
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so i took the relief valve offf the car, took out the dme relay , cranked , and no oil came out ! where to look.! what i find strange about this is taht after 2minute of idle i get oil pressure... that is since i changed my oil grade from 5-w50 to 20-w50 ! what is ur opinions ohh and here is some pics of my valve it looks normal but i didnt find any oring on the tip of my valve nor inside ?weird
  cheers welcome to my nightmare  where to start looking ? i have oil in my oil filter i checked it ! well oil is dripping ! ******************also i only drive the car every week or 2 !!! ****************
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec Last edited by matty89; 06-18-2011 at 12:39 PM.. |
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06-18-2011, 12:14 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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Matty,
You have the "3 piece" OPRV valve for the early cars. There are NO "O" rings to replace. You may have a worn out/defective "3 piece OPRV" . Porsche designed a better updated 1 piece OPRV to replace a worn out early "3 piece OPRV" The usual complaint was that the spring on the 3 piece OPRV did not hold tension any more. The updated 1 piece OPRV replacement is VERY expensive to buy new. A late model 944 1 piece OPRV will not work. Search on eBay or WTB forum for a used if you decide to buy. BUT before you do, did you do any work on the oil pump? Did you replace or check the oil pickup tube? In a recent post, the oil pickup tube on one members car had cracks that caused no oil pressure. See post 30 Low oil Pressure, tried everything I could find info on! GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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06-18-2011, 01:29 PM
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porscha
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Quote:
but if no oil comes out of the OPRV does that mean i have a blocked circulation in the oil passages ? im lost atm...
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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06-18-2011, 02:09 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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matty,
Make an early alignment tool like the one I posted on link #29. NOTE the taper in the front (nose)---. Low oil Pressure, tried everything I could find info on! Use the alignment tool to see if the oil cooler housing is binding on your 3 Piece OPRV. GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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06-18-2011, 03:50 PM
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porscha
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can someone help me eliminate the PUmp , crank bearings and oil cooler? which would leave me with only the oil pickup tube ! grrr this is making me think to much
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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06-19-2011, 05:26 PM
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Registered
Join Date: Jun 2006
Location: O.C. CA
Posts: 4,587
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in looking at the thread title, while i've never had an issue with a cold strat sounding different from a warm one, but i was going to start regaling tales of the gibson studio standard sound when cold versus warm - that can be a real nightmare
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06-19-2011, 07:14 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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Quote:
Here is a picture on the early OPRV alignment tool procedure you should use to see if there is binding.  It could be a bad oil pressure sending unit on the oil cooler housing. Not cheap, but you could have a bad sender. The aftermarket oil pressure sending units can be bought for about $35 or so. Local parts shops may charge double so shop around. NOTE the posts are brittle and will snap off with too much pressure. The oil pickup tube could be cracked. You may have to drop the oil pan and check. Replace the rod bearings at the same time. GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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06-20-2011, 05:06 AM
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Registered
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oil press.
I have heard that when oil press. sender fails, it fails to Max on gauge.
You said head was rebuilt. There is a valve in the block that could have been left out. If the can tower gasket was put on wrong it blocks an oil passage.
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87 951 all stock exc. cup II's /94 968 6-spd, lowered,17in. RUF Speedlines, M030 anti- sways/ 94 968 Tip, Cup II's, otherwise stock |
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06-20-2011, 06:16 AM
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porscha
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Quote:
im looking at the cooler housing for this weekend if its not raiining out... or else its in the oil pan that the problem is ! grrrrrrrrrrrr hate to not know what the problem is ! before i take everything apart...
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porsche 944 1986 NA 8 valves 230k Kilometers on the clock weltmeister chip and coil springs , KYB gr-2 shocks all around , weltmeister throttle cam ! REbuilt head and all new sealed Upper motor ! fresh Canada , Quebec |
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06-22-2011, 03:23 PM
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RED
GRAY
Mine
porsche 944 na
porsche 924
porsche 951 project
zx6r-sold
atv access
924 kersher body
