02 tach ? - Competition Diesel.Com

dieseljunkie · 05-09-2010, 05:28 PM

I have a 2002 dodge that I put a 01 gasser tach in with the Schied cam sensor relocate using the factory ECM. Everything works ecept when I give it lite throttle (2000-2500 rpm) the tach returns to 0 rpm and then bounces around, WTF? What is the best thing to use for an accurate tach reading (sled pull only). I did a search on here but didnt find a good answer.

j-rod · 05-09-2010, 08:20 PM

A lot of guys are running the 6k Autometer tach IIRC.

getblown5.9 · 05-10-2010, 07:57 AM

mine used to act up, at higher rpms it would bounce around, go to zero etc.

i put a new CPS in it and its working now...hopefully it stays working.

blu_by_u · 05-10-2010, 08:55 PM

I'd go off of Getblown's experience and try a new sensor. After reading his post, your symptoms sure sound like the 'could' be from an iffy sensor.

Good luck.

dieseljunkie · 05-11-2010, 06:03 AM

I was told to move the sensor closer to the tone ring. I'll pull it apart and machine a lil off the Schied bracket and go from there. Thanks guys.

Destination · 05-13-2010, 08:40 PM

When you put in the gasser tach did your miles transfer over? or does it read what miles were on the gas cluster.

getblown5.9 · 05-13-2010, 10:33 PM

Quote:

Originally Posted by Destination

When you put in the gasser tach did your miles transfer over? or does it read what miles were on the gas cluster.

yup, my truck went from 96k to 67k when i put my v10 cluster in.

Tate · 05-14-2010, 12:49 AM

Quote:

Originally Posted by getblown5.9

yup, my truck went from 96k to 67k when i put my v10 cluster in.

Yours was barely broken in. Mine went from 397k down to 307k. I'd like to keep my original mileage on the gas cluster, but thats too much of a hassle.

dieseljunkie · 05-15-2010, 06:36 AM

Quote:

Originally Posted by Destination

When you put in the gasser tach did your miles transfer over? or does it read what miles were on the gas cluster.

Ya, I went from 62k to 95k. It kinda erked me at first.

Why, what is the significance of the odometer?

JFlagg · 05-15-2010, 01:13 PM

I had tach issues when I did my ppump swap and it ended up being the wrong cam sensor adapter was for the wrong year. Make sure your sensor is as close to possible to the tone ring, mine was to the side and not centered along with being to far away... That can give an erratic signal.

My odometer went from 120,000ish to 43,000ish went I switched tachs.

dieseljunkie · 05-16-2010, 06:34 AM

I looked at the tone ring through the offset hole and it looked pretty darn close to the center. I took the bracket off and shaved it down some and the problem remains.

I will probably order a new CPS. Any other ideas?

dieseljunkie · 05-16-2010, 06:38 AM

Before I order a new sensor, I will take my calipers and measure the gap between the tone ring and the sensor. Anybody know what the gap should be?

2141pete · 05-22-2010, 07:52 PM

Same problem here and like TJ said CPS.

dieseljunkie · 05-23-2010, 07:03 AM

After machining the bracket I was left with a .050 gap. I put in a new CPS and everything works just fine now. Thanks guys!
Casey

05-09-2010, 05:28 PM	#1
dieseljunkie Name: dieseljunkie Title: Wasted Wages Status: Not Here Join Date: Dec 2007 Location: Littlestown, PA Member`s Gallery Posts: 1,068	02 tach ? I have a 2002 dodge that I put a 01 gasser tach in with the Schied cam sensor relocate using the factory ECM. Everything works ecept when I give it lite throttle (2000-2500 rpm) the tach returns to 0 rpm and then bounces around, WTF? What is the best thing to use for an accurate tach reading (sled pull only). I did a search on here but didnt find a good answer. __________________ 02 24V HO, NorthEast P-pump, , E.D. inj, ED twins, O-ringed, ARP studs, P&P and Balanced by Advanced Engine. Thanks,JWP Fab, E.D., Pure Diesel Power, GrandRock, Mumau Diesel,and Advanced Engine. 2010 FPP 2.6 points champion 2010 NADM 2.6 points champion

05-09-2010, 08:20 PM	#2
j-rod Name: j-rod Title: Up to no good Status: Not Here Join Date: Jun 2008 Location: PA Member`s Gallery Posts: 3,628	A lot of guys are running the 6k Autometer tach IIRC. __________________ Jared 14 CC LB 99 QC LB 01 TDI

05-10-2010, 07:57 AM	#3
getblown5.9 Name: getblown5.9 Title: Ceritified Kleenex Dealer Status: Not Here Join Date: Aug 2006 Location: Baltimore, MD Member`s Gallery Posts: 7,259	mine used to act up, at higher rpms it would bounce around, go to zero etc. i put a new CPS in it and its working now...hopefully it stays working. __________________ ONE PIECE AT A TIME -02 Dodge Ram 2500-Because...Pull Truck 07 Dodge 3500 SRW Megacab Laramie- 5.9/Auto, 250,000 miles, built for longevity

05-10-2010, 08:55 PM	#4
blu_by_u Name: blu_by_u Title: Diesel Head Status: Not Here Join Date: Nov 2007 Location: NE Iowa Member`s Gallery Posts: 316	I'd go off of Getblown's experience and try a new sensor. After reading his post, your symptoms sure sound like the 'could' be from an iffy sensor. Good luck. __________________ 2001.5 CTD 2500 4x4 ETH 160hp P-pump - 100 plate - 4k gsk - barrels turned - Mack rack plug Weston's 7 x 0.010 Colt Cams 181/210 Air Dog 150 Kenny's Dual Disk Clutch Tunnel Ram poor little hx35

05-11-2010, 06:03 AM	#5
dieseljunkie Name: dieseljunkie Title: Wasted Wages Status: Not Here Join Date: Dec 2007 Location: Littlestown, PA Member`s Gallery Posts: 1,068	I was told to move the sensor closer to the tone ring. I'll pull it apart and machine a lil off the Schied bracket and go from there. Thanks guys. __________________ 02 24V HO, NorthEast P-pump, , E.D. inj, ED twins, O-ringed, ARP studs, P&P and Balanced by Advanced Engine. Thanks,JWP Fab, E.D., Pure Diesel Power, GrandRock, Mumau Diesel,and Advanced Engine. 2010 FPP 2.6 points champion 2010 NADM 2.6 points champion

05-13-2010, 08:40 PM	#6
Destination Name: Destination Title: Mechanically Injected Status: Not Here Join Date: Aug 2008 Location: Rantoul,IL Member`s Gallery Posts: 440	When you put in the gasser tach did your miles transfer over? or does it read what miles were on the gas cluster. __________________ Tow rig 2004 GMC 2500HD CCSB 4x4 Puller MECHANICALLY INJECTED 01 2500 QC Shortbed Scheid,Airdog,Hamilton Cams,S475sx,and a 180 pump

05-15-2010, 01:13 PM	#10
JFlagg Name: JFlagg Title: Gun for Hire Status: Not Here Join Date: Jul 2007 Location: St. Louis, MO Member`s Gallery Posts: 5,630	I had tach issues when I did my ppump swap and it ended up being the wrong cam sensor adapter was for the wrong year. Make sure your sensor is as close to possible to the tone ring, mine was to the side and not centered along with being to far away... That can give an erratic signal. My odometer went from 120,000ish to 43,000ish went I switched tachs. __________________ P-pumped 24V... with a few mods

05-16-2010, 06:34 AM	#11
dieseljunkie Name: dieseljunkie Title: Wasted Wages Status: Not Here Join Date: Dec 2007 Location: Littlestown, PA Member`s Gallery Posts: 1,068	I looked at the tone ring through the offset hole and it looked pretty darn close to the center. I took the bracket off and shaved it down some and the problem remains. I will probably order a new CPS. Any other ideas? __________________ 02 24V HO, NorthEast P-pump, , E.D. inj, ED twins, O-ringed, ARP studs, P&P and Balanced by Advanced Engine. Thanks,JWP Fab, E.D., Pure Diesel Power, GrandRock, Mumau Diesel,and Advanced Engine. 2010 FPP 2.6 points champion 2010 NADM 2.6 points champion

05-16-2010, 06:38 AM	#12
dieseljunkie Name: dieseljunkie Title: Wasted Wages Status: Not Here Join Date: Dec 2007 Location: Littlestown, PA Member`s Gallery Posts: 1,068	Before I order a new sensor, I will take my calipers and measure the gap between the tone ring and the sensor. Anybody know what the gap should be? __________________ 02 24V HO, NorthEast P-pump, , E.D. inj, ED twins, O-ringed, ARP studs, P&P and Balanced by Advanced Engine. Thanks,JWP Fab, E.D., Pure Diesel Power, GrandRock, Mumau Diesel,and Advanced Engine. 2010 FPP 2.6 points champion 2010 NADM 2.6 points champion

05-22-2010, 07:52 PM	#13
2141pete Name: 2141pete Title: Hell I dont know Status: Not Here Join Date: Oct 2007 Location: Camp Pendleton, CA Member`s Gallery Posts: 3,268	Same problem here and like TJ said CPS. __________________ 2018 Ram 2500 4x4

05-23-2010, 07:03 AM	#14
dieseljunkie Name: dieseljunkie Title: Wasted Wages Status: Not Here Join Date: Dec 2007 Location: Littlestown, PA Member`s Gallery Posts: 1,068	After machining the bracket I was left with a .050 gap. I put in a new CPS and everything works just fine now. Thanks guys! Casey __________________ 02 24V HO, NorthEast P-pump, , E.D. inj, ED twins, O-ringed, ARP studs, P&P and Balanced by Advanced Engine. Thanks,JWP Fab, E.D., Pure Diesel Power, GrandRock, Mumau Diesel,and Advanced Engine. 2010 FPP 2.6 points champion 2010 NADM 2.6 points champion