RPM Guage works intermittingly, then stops.

1997 HONDA ACCORD
2.7L • V6 • FWD • AUTOMATIC
Avatar
WYAWS
  • MEMBER
  • 1 POST
RPM Guage works intermittently, then stops, then works intermittently. It gives a code (PO725) Engine input speed or something to that affect. I erased codes three times, usually comes back on in a few minutes, but after I erased code last night I drove back and forth, roughly 3- 4 blocks code did not come back on, neither did RPM gauge leave zero.

Since P0725 Is a generic code, Is that the same meaning as VSS (Variable Speed Sensor)?
If so, I need to locate it for testing, and receive proper instructions for testing if I am on the right track.



Wade
Apr 9, 2014 at 11:57 PM
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
here's how to test it it is an ignition coil connector or problem not getting power correctly.
Disconnect 26-pin TCM harness connector "A". Turn ignition on. Using a DVOM, measure voltage between 26-pin TCM harness connector "A", terminal No. 5 (Blue wire) and terminals No. 13 or 26 (Brown/Black wires). See Fig. 9.
If about 7 volts is present, check for loose TCM harness connectors. Replace TCM with a known-good unit if necessary. If about 7 volts is not present, repair open or short in Blue wire between ignition coil and 26-pin TCM harness connector "
Apr 10, 2014 at 12:23 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle