Tach stopped working but still lights up - Texas Fishing Forum

Register Log In Texas Fishing Forum Forums Boats & Motors Tach stopped working but still lights up

Main Menu

Advertisement

Affiliates

Advertisement

Newest Members

JPhillips1973, RTFishal, H1 ranger, T-RigLunkers, Indignant Angler
119176 Registered Users

Top Posters(All Time)

hopalong 120,963

TexDawg 119,750

Bigbob_FTW 95,280

John175☮ 85,918

Pilothawk 83,274

Bob Davis 82,266

banker-always fishing 75,701

Mark Perry 72,467

Derek 🐝 68,321

JDavis7873� 67,416

Forum Statistics

Forums59

Topics1,038,777

Posts13,952,588

Members144,176

Most Online39,925
Dec 30th, 2023

Print Thread

Tach stopped working but still lights up #13853079 01/20/21 05:47 AM
Joined: Dec 2008 Posts: 7,016 Desoto F Fishbonz OP TFF Celebrity
OP Fishbonz TFF Celebrity F Joined: Dec 2008 Posts: 7,016 Desoto	I was coming back to the ramp after a fishing trip when I noticed that my tach had stopped working. I got home and connected the mouse ears to the engine and cranked it up still no RPM`s displayed. It still lights up but that`s all it does. It`s an old school merc.XR4 150 engine. Does anyone have an Idea what could be the problem or recommend a good Merc mechanic? HE aka Fishbonz HE aka Fishbonz

Re: Tach stopped working but still lights up [Re: Fishbonz] #13853292 01/20/21 02:40 PM
Joined: Jul 2010 Posts: 1,348 Wylie B boatman025 Extreme Angler
boatman025 Extreme Angler B Joined: Jul 2010 Posts: 1,348 Wylie	Check regulator We can check it out for you if need us to Hughes Marine 3855 Osage Lane Wylie ,Texas

Re: Tach stopped working but still lights up [Re: Fishbonz] #13853365 01/20/21 03:26 PM
Joined: Mar 2010 Posts: 25,772 Temple, TX. T Bird TFF Guru
T Bird TFF Guru Joined: Mar 2010 Posts: 25,772 Temple, TX.	Rotate the cylinder setting rheostat on the back of the tach several times and return it to the original setting. Okie by birth, Texan by choice. USAF "Thunderbirds" Alumni 1985-1989

Re: Tach stopped working but still lights up [Re: Fishbonz] #13853414 01/20/21 03:52 PM
Joined: Jan 2002 Posts: 1,638 Lake Fork Texas Micheal Extreme Angler
Micheal Extreme Angler Joined: Jan 2002 Posts: 1,638 Lake Fork Texas	What Boatman says. Tach gets it's signal from the regulator. Check and see if you are charging when the motor is running. Micheal's Marine. Mobile Boat-Motor Repair Ser. Dakota Lithium Battery Dealer Lake Fork Trolling Motor sales and ser. Lowrance Dealer

Re: Tach stopped working but still lights up [Re: boatman025] #13853456 01/20/21 04:26 PM
Joined: Dec 2008 Posts: 7,016 Desoto F Fishbonz OP TFF Celebrity
OP Fishbonz TFF Celebrity F Joined: Dec 2008 Posts: 7,016 Desoto	Originally Posted by boatman025 Check regulator We can check it out for you if need us to PM sent HE aka Fishbonz

Re: Tach stopped working but still lights up [Re: Micheal] #13853553 01/20/21 07:12 PM
Joined: Dec 2008 Posts: 7,016 Desoto F Fishbonz OP TFF Celebrity
OP Fishbonz TFF Celebrity F Joined: Dec 2008 Posts: 7,016 Desoto	Originally Posted by Micheal What Boatman says. Tach gets it's signal from the regulator. Check and see if you are charging when the motor is running. What do I use to check for charging when motor is running. My boat doesn`t have a batt gage. HE aka Fishbonz

Re: Tach stopped working but still lights up [Re: Fishbonz] #13853581 01/20/21 07:20 PM
Joined: Jan 2002 Posts: 1,638 Lake Fork Texas Micheal Extreme Angler
Micheal Extreme Angler Joined: Jan 2002 Posts: 1,638 Lake Fork Texas	Use a multi-meter. All you need to do is check the voltage on the battery with the motor stopped and check it again with the motor running. You should get an increase in voltage. Keep in mind, the motor may be charging but still no tach, you may still have a bad regulator. Micheal's Marine. Mobile Boat-Motor Repair Ser. Dakota Lithium Battery Dealer Lake Fork Trolling Motor sales and ser. Lowrance Dealer

Re: Tach stopped working but still lights up [Re: Micheal] #13854258 01/21/21 01:26 AM
Joined: Dec 2008 Posts: 7,016 Desoto F Fishbonz OP TFF Celebrity
OP Fishbonz TFF Celebrity F Joined: Dec 2008 Posts: 7,016 Desoto	Originally Posted by Micheal Use a multi-meter. All you need to do is check the voltage on the battery with the motor stopped and check it again with the motor running. You should get an increase in voltage. Keep in mind, the motor may be charging but still no tach, you may still have a bad regulator. I have Three batteries but Ok .I`ll check it out. I`ll check all three! Last edited by Fishbonz; 01/21/21 01:28 AM. HE aka Fishbonz

Re: Tach stopped working but still lights up [Re: Fishbonz] #13854369 01/21/21 02:27 AM
Joined: Apr 2004 Posts: 14,058 Rockwall S Stump jumper TFF Guru
Stump jumper TFF Guru S Joined: Apr 2004 Posts: 14,058 Rockwall	Originally Posted by Fishbonz Originally Posted by Micheal Use a multi-meter. All you need to do is check the voltage on the battery with the motor stopped and check it again with the motor running. You should get an increase in voltage. Keep in mind, the motor may be charging but still no tach, you may still have a bad regulator. I have Three batteries but Ok .I`ll check it out. I`ll check all three! Only one will be cranking battery. Look for heavy wires running to rear of the boat. Normal battery voltage should be in high 12s without engine running. With engine running look for an increase to 14 or more. I am thinking my Lowrance units show 14.4 while running but I have an Optimax. 2200 Bay Champ/200 Mercury Optimax 2017 Tundra TSS 4x4 Crewmax 5.7L

Re: Tach stopped working but still lights up [Re: Stump jumper] #13854546 01/21/21 05:04 AM
Joined: Dec 2008 Posts: 7,016 Desoto F Fishbonz OP TFF Celebrity
OP Fishbonz TFF Celebrity F Joined: Dec 2008 Posts: 7,016 Desoto	Originally Posted by Stump jumper Originally Posted by Fishbonz Originally Posted by Micheal Use a multi-meter. All you need to do is check the voltage on the battery with the motor stopped and check it again with the motor running. You should get an increase in voltage. Keep in mind, the motor may be charging but still no tach, you may still have a bad regulator. I have Three batteries but Ok .I`ll check it out. I`ll check all three! Only one will be cranking battery. Look for heavy wires running to rear of the boat. Normal battery voltage should be in high 12s without engine running. With engine running look for an increase to 14 or more. I am thinking my Lowrance units show 14.4 while running but I have an Optimax. Ok i`ll check it . I have a multimeter. After that i`ll try and find the Regulator and see what youtube can tell me about it since i`ve never seen one . HE aka Fishbonz

Re: Tach stopped working but still lights up [Re: Fishbonz] #13855658 01/21/21 10:34 PM
Joined: Nov 2006 Posts: 2,848 ft worth T TLW Extreme Angler
TLW Extreme Angler T Joined: Nov 2006 Posts: 2,848 ft worth	what XR4?.. 16 or 40 amp?.. if 16 it will have separate regulator and rectifier.. both or reasonably priced.. if its tha 40 it will have a combination (water cooled) regulator/rectifier.. its a high dollar item if you can find it...

Re: Tach stopped working but still lights up [Re: TLW] #13855666 01/21/21 10:46 PM
Joined: Dec 2008 Posts: 7,016 Desoto F Fishbonz OP TFF Celebrity
OP Fishbonz TFF Celebrity F Joined: Dec 2008 Posts: 7,016 Desoto	Originally Posted by TLW what XR4?.. 16 or 40 amp?.. if 16 it will have separate regulator and rectifier.. both or reasonably priced.. if its tha 40 it will have a combination (water cooled) regulator/rectifier.. its a high dollar item if you can find it... Hey TLW! Thanks for chiming in! It`s a merc 150 blk max 1989. IDK the amps. Last edited by Fishbonz; 01/21/21 11:21 PM. HE aka Fishbonz

Moderated by banker-always fishing, chickenman, Derek 🐝, Duck_Hunter, Fish Killer, J-2, Jacob, Jons3825, JustWingem, Nocona Brian, Toon-Troller, Uncle Zeek, Weekender1

Hop To

© 1998-2022 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide

Powered by UBB.threads™ PHP Forum Software 7.7.3