08-17-2012, 02:26 AM | #1 |
Stock
Join Date: Aug 2012
Location: North Carolina
Posts: 2
|
Another Oil Pressure Gauge Thread, but not what you'd think
ALREADY SEARCHED
So I've had my '87 Supra for a few months now and the oil pressure gauge has never functioned. I've searched many a forum, but haven't managed to find anyone with quite the same symptoms as me. A little back ground, before I bought the car the HG was replaced w/ an HKS metal and ARP studs were installed. No problems there, though the speedo cable was damaged, I replaced it, though the OP gauge didn't work, even before I pulled the cluster. What I've done:
After fixing the wiring issue the same thing as what happened after the sensor replacement occurred. So the gauge isn't completely dead, but if you mess with any of its inputs under the hood it will act like it is going to work for a bit, but then doesn't. Any ideas? Thanks guys |
08-17-2012, 06:09 AM | #2 |
Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
|
Are you sure the gauge is USDM? The wiring runs from the sensor to both the gauge and the ECU, check the wiring to the ECU. You might also try disconnecting the wire to the ECU in order to rule out a fault in the ECU.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> |
08-17-2012, 02:34 PM | #3 |
Stock
Join Date: Aug 2012
Location: North Carolina
Posts: 2
|
|
08-18-2012, 08:36 AM | #4 |
Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
|
The guage for North American models will be one of the following part numbers: '86.5 to '88 83246-14690 or 83246-14790; '89+ 83246-14890 or 83246-14870 These should all interchange without issue.
The oil pressure signal branches at connector M1. See the here. I don't have a pre89 TEWD handy for reference and I'm not finding it in my MAFT Pro wiring diagrams I made for the pre89 7M-GTE... So it's possible it's mislabeled, one of the unidentified pins or that the pre89 GTE didn't use use that signal. Look for a yellow wire with a black stripe on the ECU's connectors.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> |
Tags |
7mgte, electrical, intermittent, oil pressure gauge, wiring |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
dipstick tube & oil pressure gauge help | icey756 | MKIII Supra | 9 | 08-26-2011 06:58 AM |
Stock Oil Pressure Gauge | 907mge | MKIII Supra | 4 | 05-14-2010 06:13 AM |
Oil Pressure Gauge | mkiiisupra | MKIII Supra | 0 | 01-14-2008 02:08 AM |
Oil Pressure Gauge | Drag0na5h | MKIII Supra | 5 | 03-22-2006 07:25 AM |
oil pressure gauge problem.... | SCRAMJET | MKIII Supra | 0 | 03-21-2006 06:33 AM |