TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

How can I bypass this sensor...w/in

Thread Tools
 
Search this Thread
 
Old May 19, 2002 | 07:19 PM
  #1  
Kenwood's Avatar
Thread Starter
Senior Member
iTrader: (1)
 
Joined: Jul 1999
Posts: 578
Likes: 0
From: Cincinnati
Car: 1987 GTA
Engine: PT88 Turbo DART 406
Transmission: th400
Axle/Gears: 9" ford
How can I bypass this sensor...w/in

I want to BYPASS my OIL PRESSURE/FUEL PUMP sensor...the one down by the oil filter....

I know bad idea because I run the risk of killing my motor in the event that I run out of oil or my pump breaks...But all that aside how does it work...Or better yet how can I fool the computor into thinking its connected and working wine when its not..

TIA
Kenwood
Reply
Old May 19, 2002 | 07:55 PM
  #2  
slowTA's Avatar
Senior Member
25 Year Member
iTrader: (1)
 
Joined: Jan 2000
Posts: 659
Likes: 10
From: Clifton, NJ
Car: '88 Formula
Engine: 350 TPI
Transmission: T-5... in need of slight rebuild
If it is the same sensor that is used on my '86, then you can make a jumper that goes from one terminal on the connector to the other. I would first try male solderless connectors on bothe ends of a short, but heavy gage wire... and solder them anyway. You would have to unplug the connector from the sensor and throw in this jumper. Remember that this carries all the current that goes to the fuel pump, and if it fails you will have to replace it one the side of the road.


However... if you are going through this trouble, why not just replace the sensor?? Just make sure you are gentle when taking it out and use teflon tape on the new one if it doesn't already come with it.
Reply
Old May 19, 2002 | 09:30 PM
  #3  
8Mike9's Avatar
Supreme Member
 
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Couple of things, before you go to trying stuff...

There is no feedback to the computer from this sensor.

Bypassing (as in jumpering it out/shorting it out) will only keep the fuelpump on all the time. I guess you could run it to a toggle switch...

Another thing, the switch is there as a failsafe for when the ECM driver or FR relay fails...it's not there as an "oil pressure safety" device.

What's the purpose you have in mind for jumping/bypassing it?
Reply
Old May 20, 2002 | 12:03 AM
  #4  
Morley's Avatar
Supreme Member
 
Joined: May 2002
Posts: 4,099
Likes: 2
The switch is also there as a safety feature in case of an accident. Can you imagine if you were in a wreck, broke a fuel line and that pump were to continue to run? BOOM!

~M~
Reply
Old May 20, 2002 | 12:05 PM
  #5  
Swapmaster's Avatar
Senior Member
 
Joined: Mar 2002
Posts: 792
Likes: 4
From: Somewhere over the rainbow
This has been debated and determined to be a non issue.
The circuit is redundant and not needed. There is no reason to
"bypass" it because it really does nothing anyway. Just unplug
the sensor and tuck the wires away or clip them out of the loom.
Reply
Old May 20, 2002 | 07:51 PM
  #6  
onetontj's Avatar
Junior Member
 
Joined: Dec 2001
Posts: 24
Likes: 0
Does anyone know the threads on this port of the block. I need to put an oil pressure sending unit there and need to make a T, what are the threads?
Reply
Old May 21, 2002 | 05:32 PM
  #7  
Kenwood's Avatar
Thread Starter
Senior Member
iTrader: (1)
 
Joined: Jul 1999
Posts: 578
Likes: 0
From: Cincinnati
Car: 1987 GTA
Engine: PT88 Turbo DART 406
Transmission: th400
Axle/Gears: 9" ford
1/4" NPT threads
Reply
Old May 21, 2002 | 07:19 PM
  #8  
Omar's Avatar
Senior Member
 
Joined: Jul 1999
Posts: 994
Likes: 0
From: San Diego, CA
Originally posted by Morley
The switch is also there as a safety feature in case of an accident. Can you imagine if you were in a wreck, broke a fuel line and that pump were to continue to run? BOOM!

~M~
No, it's not. Third gens do not have these safety switches.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
$750 L98
LTX and LSX
10
Feb 1, 2025 02:25 PM
djmarch
Tech / General Engine
11
May 8, 2016 11:32 AM
AmpleUnicorn88
South West Region
8
Dec 11, 2015 11:53 PM
skinny z
Carburetors
11
Sep 29, 2015 11:25 PM
Formula8r89
Cooling
6
Sep 22, 2015 04:24 PM




All times are GMT -5. The time now is 01:55 AM.