1993 Olds Eighty-Eight 3800 ICM & CPS- new problems arise - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Oldsmobile When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-23-2013, 04:33 PM   #1
Senior Member
Posts like a 4 Banger
Thread Starter
 
Martinnhs12's Avatar
 
Join Date: May 2011
Location: Tucson, Arizona
Posts: 124
Thanked 2 Times in 2 Posts
Martinnhs12 is on a distinguished road
Default 1993 Olds Eighty-Eight 3800 ICM & CPS- new problems arise

Hey Forum! Long time, no see!

It'* been almost three years since I've fixed my Series 1 3.8 and now some new problems have arisen. Since then, I've had to replace the ECM, fuel pump, fuel filter, ignition coils, and MAF.

The current problem that I have now is associated with keeping the engine running for longer periods of time. For example, starting was a fuss usually taking more than a few tries to start it; replacing the ECM remedied that. Acceleration was also and issue; remedied by replacing the throttle position sensor and MAF. Now, I can't drive Ol' Roy (Olds 88 Royale) for more than 15 minutes or else it will start sputtering when accelerating over 2000RPM as in going from 1st to 2nd gear.

I'm starting to consider to replace both the harmonic balancer and crankshaft position sensor and seeing if that works. What do you guys think? Is there something else that I need to check? I'm at my wits end so any suggestion regarding fixes is greatly appreciated while ones that involve replacing the engine is out of the question.

Thanks again guys,
-Martin
Martinnhs12 is offline   Reply With Quote
Old 11-24-2013, 09:27 AM   #2
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

icm and crank sensor are common ones for heat related issues. if you have a heat gun you can try carefully warming one and see if it goes bad
jwfirebird is offline   Reply With Quote
The Following User Says Thank You to jwfirebird For This Useful Post:
Martinnhs12 (11-24-2013)
Old 11-24-2013, 10:42 AM   #3
Senior Member
True Car Nut
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 6,857
Thanked 298 Times in 246 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

Clogged catalytic converter comes to mind as well.
rjolly87 is offline   Reply With Quote
The Following User Says Thank You to rjolly87 For This Useful Post:
Martinnhs12 (11-24-2013)
Old 11-24-2013, 05:21 PM   #4
Senior Member
Posts like a 4 Banger
Thread Starter
 
Martinnhs12's Avatar
 
Join Date: May 2011
Location: Tucson, Arizona
Posts: 124
Thanked 2 Times in 2 Posts
Martinnhs12 is on a distinguished road
Default

Thanks for the replies guys. rjolly, I bought the Oldsmobile without the catalytic converter; it was emitting a rotten egg smell from what the original owner said. Justin, when I meant ECM I was referring to the ICM and I had replaced it; I'm now leaning towards it being the crankshaft position sensor and the harmonic balancer, both are the original parts. It might take me a while to replace them, but I hope this fixes the random stalling at stoplights and sputtering at acceleration.
Martinnhs12 is offline   Reply With Quote
Old 11-25-2013, 08:13 AM   #5
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

thats a common one. now that i think of it i would replace the upstream O2 if it hasent been as well. the obd1 ones seem to be able to be bad without codes and of you dont have a live data scanner it would be hard to tell it is.
jwfirebird is offline   Reply With Quote
Old 11-25-2013, 09:28 AM   #6
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

It'* not the crankshaft position sensor. When that fails it shuts your car down like flipping a switch. It doesn't cause you car to sputter at higher RPM'*. When the car sputters is the CEL lit and/or flashing? Did you check for Diagnostic Trouble Codes. I think you are OBD1 and can check with a paper clip.
2kg4u is offline   Reply With Quote
The Following User Says Thank You to 2kg4u For This Useful Post:
Martinnhs12 (11-25-2013)
Old 11-25-2013, 02:43 PM   #7
Senior Member
Posts like a 4 Banger
Thread Starter
 
Martinnhs12's Avatar
 
Join Date: May 2011
Location: Tucson, Arizona
Posts: 124
Thanked 2 Times in 2 Posts
Martinnhs12 is on a distinguished road
Default

Yes, my CEL has been flickering on and off for a while. Even before the problem, the CEL would cycle on and off sporadically and it never gave me an issue until recently. I'll take a look at the codes over the holiday since I'll have time to work on it. My Oxygen sensor was the first thing replaced when I bought it.
Martinnhs12 is offline   Reply With Quote
Old 11-25-2013, 05:10 PM   #8
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

Do you know how to check codes with a paper clip? There is a write up in the forum for how to do that. Let us know if you can't figure it out.
2kg4u is offline   Reply With Quote
The Following User Says Thank You to 2kg4u For This Useful Post:
Martinnhs12 (11-30-2013)
Old 11-30-2013, 11:58 AM   #9
Senior Member
Posts like a 4 Banger
Thread Starter
 
Martinnhs12's Avatar
 
Join Date: May 2011
Location: Tucson, Arizona
Posts: 124
Thanked 2 Times in 2 Posts
Martinnhs12 is on a distinguished road
Default

Update:

I called a buddy of mine that owns a shop and he hooked up the computer to my Olds. It ruled out the crankshaft and harmonic balancer and displayed that my fuel pump is going bad (great to know I still have warranty on that). The Olds still runs strong, but I'm going to keep driving it until the end of the semester and then replace it.
Martinnhs12 is offline   Reply With Quote
Old 01-07-2014, 10:26 PM   #10
Senior Member
Posts like a 4 Banger
Thread Starter
 
Martinnhs12's Avatar
 
Join Date: May 2011
Location: Tucson, Arizona
Posts: 124
Thanked 2 Times in 2 Posts
Martinnhs12 is on a distinguished road
Default

Update:
I ended up replacing the Harmonic Balancer and Crankshaft sensor since my Oldsmobile died while driving it. Once that job was done, it started up fine and has ran quieter than before. When I pulled the balancer off, the crank sensor looked like it had seen better days. The gasket that goes between the balancer and crankshaft was also bad and there is where my oil leak originated from. All that was replaced and the leak stopped too.

Thanks for the help guys!
-Martin
Martinnhs12 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
ICM/CPS testing - 3.3 V6 Stalling ChetsJug General GM Chat 16 03-07-2012 07:26 AM
1993 Eighty Eight - Stopped turning over Done Buick 11 01-18-2012 02:52 PM
1993 Oldsmobile Eighty-Eight Royale 3800 Vin L Low Vacuum Martinnhs12 Oldsmobile 2 10-18-2011 12:19 PM
1993 Oldsmobile Eighty-Eight Royale 3800 Vin L no start (again) Martinnhs12 Oldsmobile 28 09-20-2011 07:46 AM
1993 Olds Eighty-Eight Cylinder Head leak Martinnhs12 Oldsmobile 56 06-24-2011 11:14 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:35 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.