Oil Pressure Gauge Doesn't Work Properly (was Oilpressure-sensor for the 1.2N engine)

Jossie · 11-28-2004

Hello

I'm having a GT 1100, but the 1.1 engine was replaced by an 1.2N engine 20 years ago ...

My question to the Opel Kadett B guys: Isn't it possible to put an (1.2N)oilpressure-sensor in this engine? I've putted an oilpressure-sensor of a GT 1900 in it, but that didn't worked. The gauge 'flipped' all the time, and at higher RPM it completely flipped to the max 5 (bar). And stayed there.

Now I've putted a used sensor of an 1.3 engine in it, but this sensor seems to be broken.

Do you guys have a solution?

P.S.: I'm using a GT 1900 oilpressuregauge, I suppose this isn't a problem ( the gauge will give the same oilpressure althought it's a 1.9 or 1.2 oilpressuregauge? )

Thanks

Joost

opelbits · 11-28-2004

While I don't have much knowledge of the 1.2N, I twould seem to me that the sending unit should be matched to the gauge. GT1900 gauge = GT1900 sending unit.

The 'flipping' of the needle may have been a problem with the electrical connection, not the sending unit or gauge.

David McCollam · 11-29-2004

Your problem was that the connection to the pressure sender was the incorrect side. The GT 1.9L oil pressure sender has two connections. One is for the oil gauge and the other is for the low oil pressure lamp on the dash. The marks on the gauge are "G" and "WK". The wire from the gauge unit connects to the "G" terminal and the wire to the lamp connects to the "WK" terminal.

Good luck.

Jossie · 11-29-2004

That's not the problem Dave, I 've checked it and the gauge was connected correctly :-( ... Thanks for the answer!

Joost

David McCollam · 11-29-2004

Joost,

Sorry that I did not have the correct answer. If you can find a 1.9L sensor, that may correct the problem. VDO also sells the sensor. If you have a seller of the VDO brand in your area, this might work. Also, they are available at www.egauges.com. The part is expensive, but it is the correct unit for the VDO dual contact unit for the gauge and warning light.

Cheers.

baronbors · 11-30-2004

Originally Posted by David McCollam

Your problem was that the connection to the pressure sender was the incorrect side. The GT 1.9L oil pressure sender has two connections. One is for the oil gauge and the other is for the low oil pressure lamp on the dash. The marks on the gauge are "G" and "WK". The wire from the gauge unit connects to the "G" terminal and the wire to the lamp connects to the "WK" terminal.

Good luck.

Uh, just for grins- not that I have mine hooked up backwards- no another person close to me might have hooked theirs up back wards- huh yeh- thats it- what would happen or what would the results be?

David McCollam · 11-30-2004

Texas Tom,

Having the wires hooked up in reverse on your "friend's" oil pressure gauge would cause the needle on the gauge to read only "at rest" or "full pressure". This would cause the needle to go almost all the way to the right or bounce back-and-forth at start-up. The oil pressure lamp would probably not have a discernable difference, unless it flickers on and off at start-up. What has "your friend" noticed? I have "a friend" who hooked his up like that also. What a bonehead! You'd think he knew nothing about cars! I can't imagine!

opelbits · 11-30-2004

Not that I ever hooked those wires up backwards,, but when I did, the light acted like it had a dimmer switch when I revved the motor. I don't remember which way it went, but it would brighten and dim, no flickering at all, like the gas pedal was a rheostat.

David McCollam · 12-01-2004

Sorrry, guess that's what I meant. It had a varying intensity, bright to dim. This is I suppose was due to the resistance range in the sender for the gauge reading, if connected correctly. This is probably why the original connections were, one with a ring terminal and screw down and the other the spade lug.

tekenaar · 12-01-2004

Originally Posted by David McCollam

Joost,

Sorry that I did not have the correct answer. If you can find a 1.9L sensor, that may correct the problem. VDO also sells the sensor. If you have a seller of the VDO brand in your area, this might work. Also, they are available at www.egauges.com. The part is expensive, but it is the correct unit for the VDO dual contact unit for the gauge and warning light.

Cheers.

Yeah, but let me take this one step further . . . thanks to Tom C.

Originally Posted by Tom Cavataio

-----Original Message-----
From: Toms70mach1@aol.com [mailto:Toms70mach1@aol.com]
Sent: Monday, December 01, 2003 6:28 PM
To: de.tekenaar@verizon.net
Subject: Re: [Opel] Thread on OP sender sources . . .

Otto,

I use an aftermarket VDO oil pres. sending unit on my GT. I bought this from egauges.com along with many other products. Part # 360-009 0-80psi / 5 bar (7psi warning) with 1/8 27npt threads. About $28.50 I then use an adapter bushing that they sell (R7963) that screws on & change the threads to the correct M14x1.5mm for the Opel ($3.75)

They sell the correct sender for the GT, VDO # 360-028 (no adapter needed), But it's $87, so you may as well save $50 and use the adapter way. There are NO clearance issues doing it this way. In fact I also installed a "T" fitting & run a mechanical oil pres. gauge because I don't trust the old electrical gauge in the dash for my new engine.

~ Tom C
Pgh PA

Prices have changed a bit since this was posted, but all the info is still correct.

tekenaar · 12-01-2004

Originally Posted by David McCollam

Sorrry, guess that's what I meant. It had a varying intensity, bright to dim. This is I suppose was due to the resistance range in the sender for the gauge reading, if connected correctly. This is probably why the original connections were, one with a ring terminal and screw down and the other the spade lug.

Standard "VDO gauge" sender range is 10-180 ohms and the idiot light is merely an on/off switch that is closed with no pressure and opens at ~7psi.

If you should connect the GT's OP sender wires up backwards, here's what happens:

When you turn the ignition key on, the OP gauge is at ~0 (switch closed) and the idiot light is brightest (10 ohms). When you turn the engine over to start it and the oil pressure reaches ~7psi, the gauge needle pegs (switch opens, infinite ohms) and the idiot light progressively dims as pressure builds (10-180 ohms).

That said, if your OP gauge was behaving normally and then your gauge suddenly pegs the next time you turn on your ignition key, the first thing to look for is a broken "gauge" connection at the OP sender, else the internal connection to the OP sender rheostat is open. Open OP sender rheostat connection is not fixable . . . time to replace OP sender, I'm afraid.

qqqqqq666 · 05-17-2005

Hi!

Will the same combination (Part # 360-009 + R7965 )fit on the Ascona also?

Sven · 05-17-2005

so do all, or atleast most gauges work in that range of ohms? because if I buy a new universal oil pressure gauge, will i be able to hook it up on the exsisting sender?

jeffw · 05-18-2005

Originally Posted by tekenaar

Standard "VDO gauge" sender range is 10-180 ohms and the idiot light is merely an on/off switch that is closed with no pressure and opens at ~7psi.

If you should connect the GT's OP sender wires up backwards, here's what happens:

When you turn the ignition key on, the OP gauge is at ~0 (switch closed) and the idiot light is brightest (10 ohms). When you turn the engine over to start it and the oil pressure reaches ~7psi, the gauge needle pegs (switch opens, infinite ohms) and the idiot light progressively dims as pressure builds (10-180 ohms).

That said, if your OP gauge was behaving normally and then your gauge suddenly pegs the next time you turn on your ignition key, the first thing to look for is a broken "gauge" connection at the OP sender, else the internal connection to the OP sender rheostat is open. Open OP sender rheostat connection is not fixable . . . time to replace OP sender, I'm afraid.

I'm not sure if this the problem I am having
When I turn the key the pressure gaude pins
I suspect there is a loose wire somewher but wher to check first
Jeff

qqqqqq666 · 05-20-2005

@ OTTO

adding to my question above, are you sure that the R7965 adapter is the correct choice? from egauges I see that this adapter is M18x1.5. Maybe the correct one is the R7963?

Please correct me if i am wrong.

David McCollam · 05-20-2005

Use the R-7593 bushing. The correct thread on the block is 14mm X 1.5. Good luck.

MikeyOne · 03-14-2006

My California 74 wagon came with an angle block adaptor that allows the sender to be mounted vertically. This pretty much eliminates the problems with installation. I believe that this was necessary because of the EGR plumbing that had to go into the same area.

Im now curoius whether this 74 sender will work with my 71 GT guages. Both are two post, but the later model is a bit smaller. I havent tried to check the ohm range - just cuz I dont have a way to create 80 psi for the sender.

Anyone know?

David McCollam · 03-14-2006

As long as the thread on the sender are correct and the ohm range is the same you're in business. If the sender is the VDO sender then the ohm range is the same as the VDO gauge. The gauge will read in Bars on the GT gauge and PSI on the Sport Wagon, 1900 or Manta gauge.

Dave

namba209 · 03-14-2006

David, it ain't necessarily so. When I was getting the oil pressure transmitter for Willit?'s new engine, the folks at VDO asked how many bars were in the oil pressure gage. It seems they have more than one transmitter that will fit, but they are for specific gages. HTH.

rstrel · 03-14-2006

Anyone here who can help me? I've had oil pressure gauge problems from day 1 I got my car. When I give contact to the ignition everything is fine. As soon as the car starts the pointer goes all the way to the right and stays like that until I turn the engine off. I changed the sender and its still the same. I put in a a new rebuilt engine..but still have the same problem. I used the old oil pump and casing which makes me believe I either have too much pressure(unlikely when it idles) or the wiring is somehow bad. Any suggestions?

baronbors · 03-14-2006

I gets awfully hot with those wires next to the manifold. Are you sure they didn't melt the insulation and are shorting out to each other?

11-28-2004	#1 (permalink)
Jossie Opeler Join Date: Nov 2003 Location: Belgium Posts: 59 Classified Rating: 0% (0)	Unanswered: Oil Pressure Gauge Doesn't Work Properly (was Oilpressure-sensor for the 1.2N engine) Hello I'm having a GT 1100, but the 1.1 engine was replaced by an 1.2N engine 20 years ago ... My question to the Opel Kadett B guys: Isn't it possible to put an (1.2N)oilpressure-sensor in this engine? I've putted an oilpressure-sensor of a GT 1900 in it, but that didn't worked. The gauge 'flipped' all the time, and at higher RPM it completely flipped to the max 5 (bar). And stayed there. Now I've putted a used sensor of an 1.3 engine in it, but this sensor seems to be broken. Do you guys have a solution? P.S.: I'm using a GT 1900 oilpressuregauge, I suppose this isn't a problem ( the gauge will give the same oilpressure althought it's a 1.9 or 1.2 oilpressuregauge? ) Thanks Joost

11-29-2004	#3 (permalink)
David McCollam Member Join Date: Jan 2004 Location: Texas Posts: 558 Classified Rating: 100% (1)	Oil Pressure sender Your problem was that the connection to the pressure sender was the incorrect side. The GT 1.9L oil pressure sender has two connections. One is for the oil gauge and the other is for the low oil pressure lamp on the dash. The marks on the gauge are "G" and "WK". The wire from the gauge unit connects to the "G" terminal and the wire to the lamp connects to the "WK" terminal. Good luck.

11-29-2004	#5 (permalink)
David McCollam Member Join Date: Jan 2004 Location: Texas Posts: 558 Classified Rating: 100% (1)	Oil Pressure sender. Joost, Sorry that I did not have the correct answer. If you can find a 1.9L sensor, that may correct the problem. VDO also sells the sensor. If you have a seller of the VDO brand in your area, this might work. Also, they are available at www.egauges.com. The part is expensive, but it is the correct unit for the VDO dual contact unit for the gauge and warning light. Cheers.

11-30-2004	#7 (permalink)
David McCollam Member Join Date: Jan 2004 Location: Texas Posts: 558 Classified Rating: 100% (1)	Reverse Hook Up Texas Tom, Having the wires hooked up in reverse on your "friend's" oil pressure gauge would cause the needle on the gauge to read only "at rest" or "full pressure". This would cause the needle to go almost all the way to the right or bounce back-and-forth at start-up. The oil pressure lamp would probably not have a discernable difference, unless it flickers on and off at start-up. What has "your friend" noticed? I have "a friend" who hooked his up like that also. What a bonehead! You'd think he knew nothing about cars! I can't imagine!

12-01-2004	#9 (permalink)
David McCollam Member Join Date: Jan 2004 Location: Texas Posts: 558 Classified Rating: 100% (1)	Flicker Sorrry, guess that's what I meant. It had a varying intensity, bright to dim. This is I suppose was due to the resistance range in the sender for the gauge reading, if connected correctly. This is probably why the original connections were, one with a ring terminal and screw down and the other the spade lug.

11-28-2004	#2 (permalink)
opelbits Detritus Maximus Join Date: Jul 2002 Location: St. Louis MO Posts: 1,096 Classified Rating: 100% (1)	While I don't have much knowledge of the 1.2N, I twould seem to me that the sending unit should be matched to the gauge. GT1900 gauge = GT1900 sending unit. The 'flipping' of the needle may have been a problem with the electrical connection, not the sending unit or gauge.

11-29-2004	#4 (permalink)
Jossie Opeler Join Date: Nov 2003 Location: Belgium Posts: 59 Classified Rating: 0% (0)	That's not the problem Dave, I 've checked it and the gauge was connected correctly :-( ... Thanks for the answer! Joost

11-30-2004	#8 (permalink)
opelbits Detritus Maximus Join Date: Jul 2002 Location: St. Louis MO Posts: 1,096 Classified Rating: 100% (1)	Not that I ever hooked those wires up backwards,, but when I did, the light acted like it had a dimmer switch when I revved the motor. I don't remember which way it went, but it would brighten and dim, no flickering at all, like the gas pedal was a rheostat.

05-17-2005	#12 (permalink)
qqqqqq666 Dr Opeler!!! Join Date: Feb 2005 Location: Greece Posts: 21 Classified Rating: 0% (0)	For Ascona? Hi! Will the same combination (Part # 360-009 + R7965 )fit on the Ascona also?

05-17-2005	#13 (permalink)
Sven Member Join Date: Sep 2003 Location: Croatia Posts: 240 Classified Rating: 0% (0)	so do all, or atleast most gauges work in that range of ohms? because if I buy a new universal oil pressure gauge, will i be able to hook it up on the exsisting sender?

05-20-2005	#15 (permalink)
qqqqqq666 Dr Opeler!!! Join Date: Feb 2005 Location: Greece Posts: 21 Classified Rating: 0% (0)	correct adapter bushing? @ OTTO adding to my question above, are you sure that the R7965 adapter is the correct choice? from egauges I see that this adapter is M18x1.5. Maybe the correct one is the R7963? Please correct me if i am wrong.

05-20-2005	#16 (permalink)
David McCollam Member Join Date: Jan 2004 Location: Texas Posts: 558 Classified Rating: 100% (1)	Bushing Use the R-7593 bushing. The correct thread on the block is 14mm X 1.5. Good luck.

03-14-2006	#17 (permalink)
MikeyOne Member Join Date: Oct 2004 Location: Los Angeles more or less Posts: 97 Classified Rating: 0% (0)	74 vSportwagon sender My California 74 wagon came with an angle block adaptor that allows the sender to be mounted vertically. This pretty much eliminates the problems with installation. I believe that this was necessary because of the EGR plumbing that had to go into the same area. Im now curoius whether this 74 sender will work with my 71 GT guages. Both are two post, but the later model is a bit smaller. I havent tried to check the ohm range - just cuz I dont have a way to create 80 psi for the sender. Anyone know?

03-14-2006	#18 (permalink)
David McCollam Member Join Date: Jan 2004 Location: Texas Posts: 558 Classified Rating: 100% (1)	Size doesn't matter. As long as the thread on the sender are correct and the ohm range is the same you're in business. If the sender is the VDO sender then the ohm range is the same as the VDO gauge. The gauge will read in Bars on the GT gauge and PSI on the Sport Wagon, 1900 or Manta gauge. Dave

03-14-2006	#19 (permalink)
namba209 5,000 Post Club Join Date: Aug 2002 Location: Imperial Beach, CA South of San Diego Posts: 5,966 Classified Rating: 0% (0) Provided Answers: 4	David, it ain't necessarily so. When I was getting the oil pressure transmitter for Willit?'s new engine, the folks at VDO asked how many bars were in the oil pressure gage. It seems they have more than one transmitter that will fit, but they are for specific gages. HTH.

03-14-2006	#20 (permalink)
rstrel Opeler Join Date: Apr 2003 Location: New Jersey Posts: 44 Classified Rating: 0% (0)	Anyone here who can help me? I've had oil pressure gauge problems from day 1 I got my car. When I give contact to the ignition everything is fine. As soon as the car starts the pointer goes all the way to the right and stays like that until I turn the engine off. I changed the sender and its still the same. I put in a a new rebuilt engine..but still have the same problem. I used the old oil pump and casing which makes me believe I either have too much pressure(unlikely when it idles) or the wiring is somehow bad. Any suggestions?

03-14-2006	#21 (permalink)
baronbors I'm slow but GT is fast Join Date: Dec 2002 Location: League City Texas Posts: 1,074 Classified Rating: 0% (0)	I gets awfully hot with those wires next to the manifold. Are you sure they didn't melt the insulation and are shorting out to each other?