Oil pressure gauge help

mr2mk1hero
Club4AG Enthusiast
Posts: 99
Joined: Mon Jan 26, 2015 2:40 am

Oil pressure gauge help

Postby mr2mk1hero » Thu May 04, 2017 2:54 am

I have an 1987 mr2 aw11 with a working oil pressure sender and wire going from the oil pressure sender. The wire is connected to nothing. It was cliped and left hanging by the PO. Don't ask me why. I think its because a 4age bigport from a corolla was swapped, along with the harness from that car, which does not have an oil pressure gauge?

My ECU is an AW11 ECU. I wan't to reconnect my oil pressure sender and have a working oil pressure gauge. I was looking at the ecu pinout diagrams but there are no pins for the oil pressure gauge. My aw11 is a european car, originally from Germany and has an AFM. I have never done this before so I might say or ask something idiotic.

My idea is to take the wire from the oil pressure gauge, splice and solder it onto a wire on the harness that goes to the oil pressure gauge pin on the ECU. I intend to splice and solder it to the wire just above the ecu connector. This make any sense? Can I do it like this?
Check out my YouTube channel: https://www.youtube.com/channel/UCwosUn ... xtqkNJ3Fbg
Check out my blog: http://www.driving4answers.com/
Heaps of 4A-GE nad MR2 mk1 aw11 content on both.

Disable adblock

This site is supported by ads and donations.
If you see this text you are blocking our ads.
Please consider a Donation to support the site.


User avatar
jondee86
Moderator
Posts: 2083
Joined: Fri Jan 11, 2013 10:21 pm
Location: Wellington, New Zealand

Re: Oil pressure gauge help

Postby jondee86 » Thu May 04, 2017 3:14 am

The oil pressure gauge is not connected to the ECU. The single wire from the
sender should be connected to a wire that runs directly to the oil pressure input
on the instrument panel.

Cheers... jondee86
Give a person a fish, they eat for a day. Suggest they search before posting, and they learn a skill for a lifetime.

mr2mk1hero
Club4AG Enthusiast
Posts: 99
Joined: Mon Jan 26, 2015 2:40 am

Re: Oil pressure gauge help

Postby mr2mk1hero » Thu May 04, 2017 4:51 am

jondee86 wrote:The oil pressure gauge is not connected to the ECU. The single wire from the
sender should be connected to a wire that runs directly to the oil pressure input
on the instrument panel.

Cheers... jondee86


Oh crap....does that mean I need to take out the intrument panel? or I can splice into the gauge wire somewhere more accessible?
Check out my YouTube channel: https://www.youtube.com/channel/UCwosUn ... xtqkNJ3Fbg
Check out my blog: http://www.driving4answers.com/
Heaps of 4A-GE nad MR2 mk1 aw11 content on both.

User avatar
jondee86
Moderator
Posts: 2083
Joined: Fri Jan 11, 2013 10:21 pm
Location: Wellington, New Zealand

Re: Oil pressure gauge help

Postby jondee86 » Thu May 04, 2017 2:44 pm

I would think that all cars fitted with the 4AGE engine would have been equipped
with oil pressure gauges, so it is likely that there would be provision for an oil
pressure gauge in whatever harness is installed in your car. It is likely that the
oil pressure gauge wire will exit the engine compartment by the same route as the
water temperature gauge wire.

I don't have any experience with the AW11, but this is the diagram for the 1988
us and Canada AW11, and I'm sure yours will be similar...

Image

The wire from the gauge will reach a point where it interfaces with the end of the
ribbon cable that connects to the instrument panel. If you are lucky you should find
that you have a spare yellow+black wire in the under dash harness that connects to
the input for the oil pressure gauge.

Cheers... jondee86
Give a person a fish, they eat for a day. Suggest they search before posting, and they learn a skill for a lifetime.

Disable adblock

This site is supported by ads and donations.
If you see this text you are blocking our ads.
Please consider a Donation to support the site.



Return to “TECH: 4A-GE ENGINE”

Who is online

Users browsing this forum: No registered users and 4 guests