1994 Oldsmobile Cutlass Crankshaft Sensor

Tiny
STACEEKEE
  • MEMBER
  • 1994 OLDSMOBILE CUTLASS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 12,300 MILES
If a crank shaft sensor is unknowingly bad for an extended time, will it shut off when the engine gets hot and stall every restart afterwards until the engine cools down again? If this is persistent and is not repaired could it cause your car to eventually have no oil pressure and sieze the engine? PLEASE HELP ME!
Do you
have the same problem?
Yes
No
Monday, February 15th, 2010 AT 12:03 PM

12 Replies

Tiny
TOOOMANYTOYS
  • MEMBER
The oil pump is mechanically connected to the engine. Having an intermittent crank sensor failure would not cause low oil pressure. Are you sure the crank sensor is faulty?
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 12:11 PM
Tiny
STACEEKEE
  • MEMBER
No I don't know for sure that it is the snesor. The reason I ask is because my car initially started to stall when it got hot. I was able to put it in nuetral everytime it stalled to get it fired back up. It would stay running for a very short amount of time and stall right back out! It was towed to shop and I have no oil pressure at all now. I had the mechanic tell me it could be a simple as a oil pump all the way up to as extreme as a new engine! I had another mechanic tell me that my engine is shot, that there is a rod knocking! My problem with this though is that my car was sound until it started stalling on me, and now they are telling me that it has a rod bad in it! I don't understand how a quiet engine and a car with no problems just throw a rod! I have had the fuel pump, fuel filter, eletrical work done, ignition module and coils are both fine, they have spark and tested normal, my ecm checked out ok! I am stumped. I have sworn that it was electrical of some degree since it started stallling on me. This is why I was wondering if it was or could be the crank sensor!
Was this
answer
helpful?
Yes
No
Tuesday, February 16th, 2010 AT 1:16 PM
Tiny
TOOOMANYTOYS
  • MEMBER
I'm not sure if I fully understand. Did the car have oil pressure before you brought it to a shop? Crank shaft sensors do have that kind of characteristic when they fail. If you have no oil pressure and its been like that for awhile. There is a good chance it damaged the engine
Was this
answer
helpful?
Yes
No
Tuesday, February 16th, 2010 AT 2:08 PM
Tiny
STACEEKEE
  • MEMBER
It had oil pressure that I thought was "normal" but I described it to the mechanic and he said it sounded low! On my oil pressure guage, it was reading a 1/3 of the way up! It was below the half way mark! I am wonder if a crank sensor will cause low pressure also. If an engine seizes up will it try to crank over, or will it make a scrething sound? You have been a HUGE help with this so far and any knowledge you have will help me tremendously!
Was this
answer
helpful?
Yes
No
Wednesday, February 17th, 2010 AT 4:38 PM
Tiny
TOOOMANYTOYS
  • MEMBER
The crank sensor will not cause low oil pressure. When the engine is cranking and making this screech noise does it start and run? Usually engine failure is a loud knocking noise. But every vehicle is different. It sound like a second opinion may be needed. Just to be sure.
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2010 AT 1:50 PM
Tiny
STACEEKEE
  • MEMBER
Ok! Well it doesn't screech at all, I was just wondering what a seized up engine sounds like! When I turn the key it trys its hardest to start but doesn't! It no longer fires up! It just turns and turns and turns! :(
Was this
answer
helpful?
Yes
No
Thursday, February 18th, 2010 AT 7:57 PM
Tiny
TOOOMANYTOYS
  • MEMBER
So its cranking but not starting. Usually a seized engine doesnt turn over. Most of the time its one loud click which is the starter hit the flywheel and not turning it. If your vehicle is cranking over normally there is a possiability the motor is not failing. Its hard to help not being there. What kind of service facility is the car at?
Was this
answer
helpful?
Yes
No
Friday, February 19th, 2010 AT 4:03 PM
Tiny
STACEEKEE
  • MEMBER
Yes, its not starting. Wow. The car is now at the house. I am going to take the engine apart as soon as the weather fairs up, but to be honest I am no mechanic by any means and have very little idea of what I am doing. I enjoy working on my car and I do know quite a bit about them but not the mechanics of an engine! I would hate to get into the engine and it be something else. I am just not sure where to turn next! If there is a slight chance that it isn't the engine do you have any ideas what could make a car crank but not start? It has a brand new battery, new starter solenoid, fuel pump, fuel filter, ignition module and coils are good! What else could it be?
Was this
answer
helpful?
Yes
No
Saturday, February 20th, 2010 AT 8:06 AM
Tiny
TOOOMANYTOYS
  • MEMBER
I would do a compression test to start make sure all cylinders have 100 to 125 psi. Id any cylinder has lower than normal compression this found be a sign that the engine needs to be taken apart. Have you checked for spark? Or fuel pressure?
Was this
answer
helpful?
Yes
No
Saturday, February 20th, 2010 AT 9:58 PM
Tiny
STACEEKEE
  • MEMBER
Hello, Yes it has both fuel pressure and spark! How would a person go about testing the cylinders for compression?
Was this
answer
helpful?
Yes
No
Monday, February 22nd, 2010 AT 7:08 PM
Tiny
TOOOMANYTOYS
  • MEMBER
You can purchase a compression gauge at most auto parts stores. The instruction on how to use it will be inside package.
Was this
answer
helpful?
Yes
No
Wednesday, February 24th, 2010 AT 8:19 AM
Tiny
STACEEKEE
  • MEMBER
Ok, great thank you! I will pick one up friday and as soon as I figure out if it has compression I will get backto you! Thank you sooooo much
Was this
answer
helpful?
Yes
No
Wednesday, February 24th, 2010 AT 6:27 PM

Please login or register to post a reply.

Recommended Guides