Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

Knocking and fire

Thread Tools
 
Search this Thread
 
Old 06-10-2005, 01:23 AM
  #1  
Member

Thread Starter
 
Sunny RS's Avatar
 
Join Date: Jun 2002
Location: Anoka MN
Posts: 182
Likes: 0
Received 0 Likes on 0 Posts
Car: 89' RS
Engine: 5.0
Transmission: slipping 700r4, soon probuilt
Knocking and fire

My car is knocking. My oil pressure is flying all over it burys way past 60 then drops down to like 30. I looked under my car tonight and this part was on fire right above the oil filter and next to the Oxygen sensor can anyone help me out or at least tell me what that part is? theres i think 2 wires coming outta it and it goes into my block
Old 06-10-2005, 01:31 AM
  #2  
Moderator

 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes on 8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Sounds like the oil pressure switch.
Old 06-10-2005, 09:47 PM
  #3  
Member

Thread Starter
 
Sunny RS's Avatar
 
Join Date: Jun 2002
Location: Anoka MN
Posts: 182
Likes: 0
Received 0 Likes on 0 Posts
Car: 89' RS
Engine: 5.0
Transmission: slipping 700r4, soon probuilt
Ok so i was driving the car today and the oil just droped and my car car died cant get it started? could that be the oil pressure switch?
Old 06-10-2005, 11:00 PM
  #4  
Moderator

 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes on 8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
The oil pressure switch powers the fuel pump if the fuel pump relay fails. If both of them failed, you could have the problem you describe. It sounds like you might have even bigger problems though.
Old 06-11-2005, 04:51 PM
  #5  
Member

Thread Starter
 
Sunny RS's Avatar
 
Join Date: Jun 2002
Location: Anoka MN
Posts: 182
Likes: 0
Received 0 Likes on 0 Posts
Car: 89' RS
Engine: 5.0
Transmission: slipping 700r4, soon probuilt
like what bigger problems? spun rod bearing and others
Old 06-11-2005, 07:07 PM
  #6  
Member

Thread Starter
 
Sunny RS's Avatar
 
Join Date: Jun 2002
Location: Anoka MN
Posts: 182
Likes: 0
Received 0 Likes on 0 Posts
Car: 89' RS
Engine: 5.0
Transmission: slipping 700r4, soon probuilt
i jumped the fuel relay found out that was blown also the oil switch set on fire. If the oil switch is non working could that cause a knock?
Old 06-11-2005, 08:25 PM
  #7  
Moderator

 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes on 8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
No, but if the oil pressure switch was working but the fuel pump relay wasn't and the car shut down because of no oil pressure, that would certainly cause a knock.
Old 06-12-2005, 10:54 PM
  #8  
Supreme Member
 
PhLaXuS's Avatar
 
Join Date: Feb 2005
Location: Fort Lauderdale, FL
Posts: 1,034
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi w/Disc
Could also be the Oil Pressure Sensor for the dash gauge. Camaros had I think three locations for this sensor. My friend's 91 RS v6 MPFI has it screwed in at the base of the oil filter.

Anyone else think this looks like:
1.) Bad FP relay
and
2.) Failing Oil pump
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RedLeader289
Tech / General Engine
10
05-28-2019 01:47 PM
RS Reaper
Electronics
4
10-17-2018 07:52 PM
bigjay89gta
Engine/Drivetrain/Suspension Parts for Sale
12
10-15-2015 08:04 AM
SS-EXPRESS
Electronics
2
09-28-2015 09:14 AM
efiguy
Engine/Drivetrain/Suspension Parts for Sale
0
09-27-2015 01:30 PM



Quick Reply: Knocking and fire



All times are GMT -5. The time now is 07:38 PM.