Pennock's Fiero Forum
  General Fiero Chat
  Fiero on life support

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Fiero on life support by bonaduce
Started on: 06-16-2014 04:55 PM
Replies: 13 (483 views)
Last post by: 2.5 on 07-08-2014 01:08 PM
bonaduce
Member
Posts: 1460
From: witness protection
Registered: Oct 2002


Feedback score: (5)
Leave feedback

Rate this member

Report this Post06-16-2014 04:55 PM Click Here to See the Profile for bonaduceClick Here to Email bonaduceSend a Private Message to bonaduceEdit/Delete MessageReply w/QuoteDirect Link to This Post
Well the days of me wanting to finish my engine swap and driving my car may be officially over after 13 years. Was doing a final stress test on the engine before putting her on the road, all started well 23-25lbs of oil pressure (3.4 dohc) running good for 15-20 minutes, went to check gauges and see 17 lbs, jumps back to 23. So I decide to sit and watch, pressure drops to 12 engine stumbles and goes to 3 so I quickly shut it down. Wait 5 minutes check the oil and it is full. Go to start car and see pressure during crank is at 35-40 figure I might get lucky, no, engine catches and now no oil pressure at all. So decision is to tear into this engine, replace with the original 2.5 (glad I kept all of it), or give up the ghost and call it a day. Sorry about the rant.

dan
IP: Logged
PFF
System Bot
Raydar
Member
Posts: 38854
From: Carrollton GA. Out in the... country.
Registered: Oct 1999


Feedback score:    (12)
Leave feedback





Total ratings: 453
Rate this member

Report this Post06-16-2014 05:06 PM Click Here to See the Profile for RaydarClick Here to Email RaydarSend a Private Message to RaydarEdit/Delete MessageReply w/QuoteDirect Link to This Post
Check your oil pressure sender. Sounds like it might be flakey.

If it's showing 35+ lbs cranking, and then drops off after the engine fires, it sounds like an electrical issue.
Temporarily install a mechanical gauge, and see what it really is.

Don't give up yet!
IP: Logged
bonaduce
Member
Posts: 1460
From: witness protection
Registered: Oct 2002


Feedback score: (5)
Leave feedback

Rate this member

Report this Post06-16-2014 09:42 PM Click Here to See the Profile for bonaduceClick Here to Email bonaduceSend a Private Message to bonaduceEdit/Delete MessageReply w/QuoteDirect Link to This Post
This is a mechanical gauge that I just installed, taking a break for a while getting fed up with it and other things in life need attending to. Owned this car for thirteen years now, longer than my first child, and the car only has 50 miles on it since I obtained. I would be happy just to drive it to a junk yard at this moment.

dan
IP: Logged
VikingRedBaron
Member
Posts: 879
From: Moorhead, MN USA
Registered: Nov 2009


Feedback score: N/A
Leave feedback

Rate this member

Report this Post06-16-2014 10:55 PM Click Here to See the Profile for VikingRedBaronClick Here to Email VikingRedBaronSend a Private Message to VikingRedBaronEdit/Delete MessageReply w/QuoteDirect Link to This Post
Try another gauge before you you give up.

The pressure jumping high and low does not seem consistent with internal problems.
IP: Logged
Csjag
Member
Posts: 3170
From: Ocklawaha,Fl, USA
Registered: Dec 2013


Feedback score: N/A
Leave feedback

Rate this member

Report this Post06-17-2014 08:11 AM Click Here to See the Profile for CsjagClick Here to Email CsjagSend a Private Message to CsjagEdit/Delete MessageReply w/QuoteDirect Link to This Post
Don't give up!
IP: Logged
2.5
Member
Posts: 41757
From: Southern MN
Registered: May 2007


Feedback score: (1)
Leave feedback





Total ratings: 180
Rate this member

Report this Post06-17-2014 08:57 AM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
I dont think 17 lbs at idle is too low to worry about. What oil weight is in it, and was it fully warm? Jumping around is likley the signal to the gauge.

When the engine stumbles if the rpm goes lower than idle I'd expect the pressure to get lower too. Whatever caused the stumble is probly the issue.

[This message has been edited by 2.5 (edited 06-17-2014).]

IP: Logged
bonaduce
Member
Posts: 1460
From: witness protection
Registered: Oct 2002


Feedback score: (5)
Leave feedback

Rate this member

Report this Post06-18-2014 11:19 AM Click Here to See the Profile for bonaduceClick Here to Email bonaduceSend a Private Message to bonaduceEdit/Delete MessageReply w/QuoteDirect Link to This Post
ok I know I said I was going to take a break but I couldn't. Got to thinking maybe I ran out of gas, only had about a gallon in her for a year now, so when I got home I disconnected the line and turned key and fuel flowed freely. Told wife start it, would rather drive than push back into garage, she fired up at 3 lbs then after a second or two went to 16, got into to back it back in went down to 12, kept her running long enough to get on ramps and pressure stabalized at 20. Minumum pressure required is 15 lbs at 1100 rpm idle. Wieght of oil is 5w30 synthetic. My plans are to drain the oil, replace filter, even though i just did 2 weeks ago, refill with 10w40 conventional, double check wiring at switch, maybe drop pan and check pump. just and update

dan
IP: Logged
2.5
Member
Posts: 41757
From: Southern MN
Registered: May 2007


Feedback score: (1)
Leave feedback





Total ratings: 180
Rate this member

Report this Post06-18-2014 11:27 AM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
Sounds like that thing needs a full tank and a long drive.
IP: Logged
bonaduce
Member
Posts: 1460
From: witness protection
Registered: Oct 2002


Feedback score: (5)
Leave feedback

Rate this member

Report this Post06-18-2014 11:39 AM Click Here to See the Profile for bonaduceClick Here to Email bonaduceSend a Private Message to bonaduceEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 2.5:

Sounds like that thing needs a full tank and a long drive.



I agree, just don't want to get stranded in the middle of no where, thats why the stress testing in driveway, to catch possible issues.

dan
IP: Logged
Marine1981
Member
Posts: 1364
From: Austin, Texas, USA
Registered: Jan 2011


Feedback score:    (6)
Leave feedback

Rate this member

Report this Post06-19-2014 12:13 AM Click Here to See the Profile for Marine1981Click Here to visit Marine1981's HomePageSend a Private Message to Marine1981Edit/Delete MessageReply w/QuoteDirect Link to This Post
Take a chase car out with you and some radios in case they see anything amiss. Good luck with finding the issue.
IP: Logged
84fiero123
Member
Posts: 29950
From: farmington, maine usa
Registered: Oct 2004


Feedback score: N/A
Leave feedback





Total ratings: 325
Rate this member

Report this Post06-19-2014 09:18 AM Click Here to See the Profile for 84fiero123Click Here to Email 84fiero123Send a Private Message to 84fiero123Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by bonaduce:

I agree, just don't want to get stranded in the middle of no where, thats why the stress testing in driveway, to catch possible issues.

dan


Pull a Ferris Buller, Put it on jack stands and a rock on the gas pedal, just make sure you block both the frt wheels, both sides and let her rip !

Steve

------------------
Technology is great when it works,
and one big pain in the ass when it doesn't



Detroit iron rules all the rest are just toys.

[This message has been edited by 84fiero123 (edited 06-19-2014).]

IP: Logged
PFF
System Bot
bonaduce
Member
Posts: 1460
From: witness protection
Registered: Oct 2002


Feedback score: (5)
Leave feedback

Rate this member

Report this Post07-08-2014 10:56 AM Click Here to See the Profile for bonaduceClick Here to Email bonaduceSend a Private Message to bonaduceEdit/Delete MessageReply w/QuoteDirect Link to This Post
Ok update, Was able to drop the oil pan after about 2 hours of trying not to remove an engine mount and breaking the level sensor (don't need it anyway). Found some sludge in the bottom of the pan, not much but some. Also found 3 small (1/8 x 1/16 x real thin) piecies of cast metal, no shavings. Checked all around and didn't see anything chipped or broken. Figured I would install a new oil pump as long as I was this far. Attempted to remove a bearing cap, just to check them, but since I am no longer fat I have no strength when laying on the garage floor. So I put it all back together, filled with 10w40 and started it, it has oil pressure again. Idle=19-20, slight throttle jumps to 30-35. So hopefully It was the original oil pump causing the issue

dan
IP: Logged
jaskispyder
Member
Posts: 21510
From: Northern MI
Registered: Jun 2002


Feedback score:    (22)
Leave feedback





Total ratings: 205
Rate this member

Report this Post07-08-2014 11:35 AM Click Here to See the Profile for jaskispyderSend a Private Message to jaskispyderEdit/Delete MessageReply w/QuoteDirect Link to This Post
GM says min. oil pressure at idle (1K) is about 20psi

I soft of like it when I don't have a guage, that way I don't worry about it.

My truck says "L -- H"

[This message has been edited by jaskispyder (edited 07-08-2014).]

IP: Logged
2.5
Member
Posts: 41757
From: Southern MN
Registered: May 2007


Feedback score: (1)
Leave feedback





Total ratings: 180
Rate this member

Report this Post07-08-2014 01:08 PM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by bonaduce:

Attempted to remove a bearing cap, just to check them, but since I am no longer fat I have no strength when laying on the garage floor.
dan


I didn't know it worked like that!


Good to hear your oil pressure is better.
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock