Need help 93 Olds 3800 crank sensor fails 3 times in 12 months


Asked by Jun 06, 2014 at 09:58 PM about the 1993 Oldsmobile Eighty-Eight Royale 4 Dr LS Sedan

Question type: Maintenance & Repair

I have had the 93 olds 88 royale and has been an excellent car up until the last year. I have had it towed 4 times in the last year and each time has been no start no spark and been fixed by replacing the crank sensor. It works flawlessly for two weeks to two months and then with out warning wont restart hot and finally not at all. I've used the same repair shop for years and feel they are fair and competent  Today will be crank sensor # 4 unless someone has a better solution. Thanks in advance for any help.

5 Answers


Make sure they check the clearances on the crank sensor windows, it could have a damaged one.

3 out of 3 people think this is helpful.

May be bad harmonic balancer ,that may be why you have to have it replaced so often,the magnet is weak,i would look there,and replace it.It,s happen to me before,life experiance,,good luck with it

4 out of 4 people think this is helpful.

Thanks folks for the quick response. So far I haven't heard from the repair shop of any scuffing marks or damage to the failed sensors at this point. If memory serves me (and it may not LOL) this is an interrupt type in a fixed position and contains no magnet. They did note there was some oil leaking in the area but didn't seem to think it contributed to the failures. I do remember a magnet on the cam gear on these the used to fall off or something, but the replacement of the crank sensor makes it from no reliable (At least for a couple of weeks), so I have somewhat ruled that out. I did go ahead and order a new aftermarket balancer since it seems like the next logical progression imho.

2 out of 2 people think this is helpful.

I had the same problem with my 93 Olds 88. Turns out the the wiring harness for the crank sensor runs behind the water pump area. The insulation on the wires deteriorated allowing the wires to make contact shutting of the motor and throwing a crank sensor code..

1 out of 1 people think this is helpful.

Had this problem melted wires behind water pump took week figure this out seen your post trying find out what else it hurt since car still wont start changed crank sensor

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • My 88 royale wont start 9 answers

    Ok..... I had troubles with this car a month ago not starting... It turned out to be the fuel pump. It had been running perfectly until this afternoon... It would not start... The battery is fine, as...

    1995 Oldsmobile Eighty-Eight Royale


    Maintenance & Repair

  • car dies when stomping on gas 11 answers

    i have a 89 olds cut. sup. with a 3.1L in it. it sat for around 4 to 5 years. i started it once to twice a month. now i want to drive it on the road. it starts up great idles great and runs great as l...

    1989 Oldsmobile Cutlass Supreme


    Maintenance & Repair

  • my 2.8 olds cuts off when warmed up 2 answers

    My 1988 olds Cutlass Supreme with 2.8 cuts off just before the cooling fan swithces on and will NOt restart until the ngine is DEAD cold again,, Ive replaced coil packs, coil pack board , ECM, new upd...

    1988 Oldsmobile Cutlass Supreme


    Maintenance & Repair

  • I have a 2000 Oldsmobile Intrigue with a random no start problem. 18 answers

    I have a 2000 Oldsmobile Intrigue with a random no start problem. It's a no crank no start issue and the security light is not blinking. Randomly it will not start and if i just wait a period of tim...

    2000 Oldsmobile Intrigue


    Maintenance & Repair

  • Oldsmobile Alero ran hot now wont start no spark 3 answers

    About 3 weeks ago ran car hot for a while was out of town middle of no where trying to get to secure place. Now car will not Start turns over . But no spark please help can't afford another motor ...

    2001 Oldsmobile Alero GL Coupe


    Maintenance & Repair

Eighty-Eight Royale

Looking for a Used Eighty-Eight Royale in your area?

CarGurus has 28 nationwide Eighty-Eight Royale listings and the tools to find you a great deal.


Search Oldsmobile Eighty-Eight Royale Questions

Oldsmobile Eighty-Eight Royale Experts

#1 Michael Urbanski
Michael Urbanski
Reputation 240
#2 John Saffrahn
John Saffrahn
Reputation 180
#3 Tom Demyan
Tom Demyan
Reputation 140
View All

Related Models For Sale

Used Cadillac DeVille
6 Great Deals out of 1,633 listings starting at $1,999
Used Ford F-150
2,181 Great Deals out of 206,248 listings starting at $1,499

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.