Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > 3rd Gen Honda Prelude

Thread Title
89 Prelude flashing oil light

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 06-23-2012, 12:11 PM
I'm New
 
Join Date: Jun 2012
Posts: 4
iTrader: (0)
mankin5344 is on a distinguished road
89 Prelude flashing oil light

I just bought a 89 prelude si and the issue I am having is a blinking oil light. It is an intermittent issue. If I turn off the car it will go out and usually not come back on. It has only happened twice in the past week. Could it be a sensor or something? Just wandering what would be the best things to check
Reply With Quote
  #2 (permalink)  
Old 06-23-2012, 02:26 PM
Silver Member
 
Join Date: Oct 2010
Location: Atlanta area
Posts: 258
iTrader: (0)
TripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond repute
Re: 89 Prelude flashing oil light

I typed up a long, accurate post but it was accidentally lost before I replied.

First of all, do not drive the car (not even 5 minutes) until you are absolutely positive the engine oil pressure is not a problem.

Here is what you need to do for troubleshooting and repairing. Preferably in order:

1. Check oil level and make sure it has enough.

2. Change oil and oil filter (10w-30 or 5w-30).

3. Oil pressure sending unit (one-wire sensor on engine located above oil filter). Make sure the electrical connection is clean, secure, and 100%. Also check that the wire is in good shape. Sometimes the wire will deteriorate and either have a weak connection, or can intermittently short on something and throw a false positive. Your engine will be fine.

4. Oil pickup screen (part of the oil pickup tube), remove oil pan to access. This part ensures nothing too large passes through the oil pump and engine. The oil pickup screen can collect debris and clog up. If this has happened, the lack of oil pressure will harm the engine if driven. You can remove it, clean it and reverse-flush, then install with a new o-ring and new oil pan gasket.

Here is an online repair manual link. It does not yet cover engine rebuilding or the oil pressure sending unit.:
http://www.preludebible.com/

Once upon a time, I bought a 88S lude with a blown head gasket. After replacing the head gasket, the oil light flickered when driving around the block. Turns out, little craps of old head gasket and debris clogged the oil pickup screen. The result was 3+ spun bearings. I quickly did what I needed to drive it for 3 more years. Now, I have the engine out for rebuild and also a lot of work to gain some horse power.

It is 100% repairable, but you need to check and make sure the oil pressure is good ASAP.

Does the oil light stay on ever?
Does the oil light flash at a steady pace?
Does the light randomly flicker without rhythm?

Last edited by TripleLude; 06-23-2012 at 02:34 PM.
Reply With Quote
  #3 (permalink)  
Old 06-23-2012, 08:36 PM
I'm New
 
Join Date: Jun 2012
Posts: 4
iTrader: (0)
mankin5344 is on a distinguished road
Re: 89 Prelude flashing oil light

Ive had the car for about a week. It has only came on three times and every time it blinked at a steady fast pace. Two times it only lasted a few seconds then it turned itself off. The third time it stayed on until I got to work. The oil is clean and is full. I wanna get an oil pressure gauge and see what the pump is pushing out. What is the fitting size I would need? Also will a lot of oil come out whenever I take out the oil pressure sensor to put in the mechanical gauge? Thanks for the help.
Reply With Quote
  #4 (permalink)  
Old 06-23-2012, 10:28 PM
Silver Member
 
Join Date: Oct 2010
Location: Atlanta area
Posts: 258
iTrader: (0)
TripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond repute
Re: 89 Prelude flashing oil light

What weight/viscosity oil did you put in it?

I'm not sure of the fitting or threading. There is a metric o-ring back there, btw.

I imagine up to a pint of oil will come out of the hole as long as the oil filter anti-drainback valve is still operational. You should have a filter and jug ready just in case.
Reply With Quote
  #5 (permalink)  
Old 06-23-2012, 11:04 PM
I'm New
 
Join Date: Jun 2012
Posts: 4
iTrader: (0)
mankin5344 is on a distinguished road
Re: 89 Prelude flashing oil light

I am using 10w-30. Is 5w-30 better for the long run? I live in Florida so its always hot. Im not sure if that effects the weight of the oil I use.
Reply With Quote
  #6 (permalink)  
Old 06-23-2012, 11:20 PM
Silver Member
 
Join Date: Oct 2010
Location: Atlanta area
Posts: 258
iTrader: (0)
TripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond reputeTripleLude has a reputation beyond repute
Re: 89 Prelude flashing oil light

5w-30 makes a hair more horse power and a hair more in MPG's. However, if the motor has many miles and been using the 10w-30 for a while, I would stick with the 10w-30, at least until you figure out the oil light problem.
Reply With Quote
  #7 (permalink)  
Old 06-23-2012, 11:27 PM
I'm New
 
Join Date: Jun 2012
Posts: 4
iTrader: (0)
mankin5344 is on a distinguished road
Re: 89 Prelude flashing oil light

Ok thanks for all your help. I'm hoping its just a bad connection on the sensor.
Reply With Quote
  #8 (permalink)  
Old 06-26-2012, 07:18 AM
Platinum Member
 
Join Date: Feb 2010
Location: Fayetteville, Ga.
Posts: 1,278
iTrader: (0)
Lespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond reputeLespaul59 has a reputation beyond repute
Re: 89 Prelude flashing oil light

Mine blinked on and off for a few days just like yours. Then while driving the engine sounded like it locked up and died instantly. After taking off the valve cover and cams. I saw that some of my cam bosses were completely spun out and chewed up. Get a new oil pump. That was my problem. Low oil pressure from a worn out pump. They are kind of pricey. Don't make the same mistake I made by just keeping the oil level full. Easy to do.Lower the exhaust,Drop oil pan, then remove pick up screen.You'll have to take off the timing belt to remove the harmonic balancer too.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Flashing Oil Light Neo858 4th Gen Honda Prelude 8 06-28-2012 12:19 AM
Oil light flashing in 01 Prelude ralarson General Tech Talk 1 05-21-2012 02:58 PM
Speedo quit workin 4WS light on, D4 light flashing help!!! ididdy 4th Gen Honda Prelude 36 07-22-2011 11:53 AM
oil light flashing cikota 5th Gen Honda Prelude 6 05-10-2008 03:33 PM


All times are GMT -4. The time now is 07:36 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.