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Author Topic: CEL & Tach stops working  (Read 2981 times)

Offline Scott91370

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CEL & Tach stops working
« on: October 25, 2008, 01:55:40 am »
Last week my tach intermitantly stopped working, it's still doing it.  When it does power drops, dramatically!
I show 3 codes:
P0122 Throttle Position Sensor/Switch A Circuit Low Input
P0500 Vehicle Speed Sensor 1 Circuit, or No Vehicle Speed Reference Signal 1
P1693 Turbo Charge Control Circuit Malfunction

When I took it to AutoZone the guy said it read these codes and gave me the print out:
P0341 Camshaft Position Sensor Circuit Range/Performance
P0380 Glow Plug/Heater Circuit "A" Malfunction

Is there any reason the odometer readout would not show all the codes?  And would any of the 3 codes I show keep the tach from working correctly?

Thanks!
Scott

2001 CTD, 4.5" Lift, 35's, 5" turbo back exhaust, banks wastegate actuator, some bully dog thing

Offline jakebrake

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Re: CEL & Tach stops working
« Reply #1 on: October 25, 2008, 02:07:45 am »
camshaft code would cause that. Good luck getting to that thing. Its between the vp44 and the engine block. not sure why it wouldnt display the other codes.
*2006 Charger SRT8
*2006 Durango SAR Modified
*1985 CJ-7 with a few stock parts left

Special thanks to Rich at www.doghousediesel.com

Offline Justviper1

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Re: CEL & Tach stops working
« Reply #2 on: October 26, 2008, 06:39:22 am »
The P0380 could be as simple as a dirty connection.  I had this code and at the intake heater relay on the driverside fender there are two relays and the wires on both of mine were dirty and corroded how ever only one relay wouldn't work.  Cleaned everything up and now it is good to go.  I went all last winter with only one intake heater working and I had the truck in 20 and below temps without being able to plug it in.  Started just fine! 
01 Ram 2500 QCLB 150 HP DDP Injectors, APR Studs, HTT 71 series turbo, Industrial Injection VP44, 4.5 Skyjacker lift, 35x12.50R16 tires, 5 Inch Custom Dual Exhaust, AFE Stage 2, AirDog 150, Adrenaline with Pulse V2, T/C lockup switch, Billet Garmon Transmission, LED taillights, Projector Headlights with HID High,Low and Fog Lights all LED Putco exterior lights

Offline Justviper1

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Re: CEL & Tach stops working
« Reply #3 on: October 26, 2008, 06:40:38 am »
Jake don't they say to replace those while you are replacing the VP just as precaution so you don't have to try to squeeze in there with the new pump in?
01 Ram 2500 QCLB 150 HP DDP Injectors, APR Studs, HTT 71 series turbo, Industrial Injection VP44, 4.5 Skyjacker lift, 35x12.50R16 tires, 5 Inch Custom Dual Exhaust, AFE Stage 2, AirDog 150, Adrenaline with Pulse V2, T/C lockup switch, Billet Garmon Transmission, LED taillights, Projector Headlights with HID High,Low and Fog Lights all LED Putco exterior lights

Offline jakebrake

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Re: CEL & Tach stops working
« Reply #4 on: October 26, 2008, 06:54:18 pm »
yep well worth the cost of a sensor when you have the vp44 out.
*2006 Charger SRT8
*2006 Durango SAR Modified
*1985 CJ-7 with a few stock parts left

Special thanks to Rich at www.doghousediesel.com

Offline Scott91370

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Re: CEL & Tach stops working
« Reply #5 on: October 27, 2008, 01:51:54 am »
Ir does appear it may be a fun little job.  On bolt holding it in, but I can't see it.  I'll be driving the car for a while sone gas is a lot cheaper now and it gets almost double the milage.  I'll let you guys know how long it takes to replace, when I get to it.
Scott

2001 CTD, 4.5" Lift, 35's, 5" turbo back exhaust, banks wastegate actuator, some bully dog thing

Offline mayfair

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Re: CEL & Tach stops working
« Reply #6 on: October 27, 2008, 10:08:24 pm »
I just last year replaced my cam sensor. i tried to do it myself, but I couldn't do it. I wound up taking it to the dealer and they did it for me for i think it was 80 bucks. Money well spend if you ask me. I tried for over an hour just to get the socket on the sensor and I couldn't do it. My biggest fear was that i was going to get the old one out, and not be able to thread the new one in.

Good luck !!

Offline Motorbrreath

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Re: CEL & Tach stops working
« Reply #7 on: October 29, 2008, 01:10:41 am »
Mil On. Tach Inoperative. Codes P0341, P0215, P1689, P1690. Check Cam Sensor Operation.;When codes p0341, p0215, p1689 and p1690 set do p0341 diagnostics. You may find that sensor voltages (map, apps, oil pressure, cam and crank sensors) on a 24 valve diesel engine differ from what you may be used to seeing. The reference voltage should be about 5 volts, the signal wire 0 volts and sensor ground. On 2001 & 2002 models with P0341, p0215, p1689 and P1690 setting or the tachometer is dropping out, monitor the cam sensor (CMP) signal with the DRBIII. Verify the signal is constant/steady. Inspect the cam sensor wiring. Repair wiring or replace the sensor as needed. If cam sensor and circuit check ok, inspect for excessive camshaft endplay. The end play specification is 0.006 -0.010 inch. If camshaft endplay is out specification, the camshaft gear assembly must be replaced. Reference the 2002 powertrain manual, pg #169. Test #1, measure the AC noise on battery voltage to ECM, is the voltage above 25mVrms? (Possible electrical noise from the Transfer pump). If codes 1690 and or 1689 are setting load test the injection pump power and ground at the injection pump connector using a head light as a load.


1993 W250 12 valve
hx40, 75hp sticks, m4, 4000 gov, arp's , 60lb springs, electric lift pump, timing advanced, full power screw bottomed, smoke screw turned up, star wheel turned 2 turns.
Chris

Offline Scott91370

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Re: CEL & Tach stops working
« Reply #8 on: October 29, 2008, 02:01:30 am »
I understood abpout half that.   :P   I did look at the wiring and during the minor visual it looked good.

The thing I am worried about is that I'll replace the sensor and it'll be something different.  But without the DRBIII it's hard to monitor the sensor.  And I sure hope it isn't cam gear.

I think I may just get rid of this thing before something serious happens. Like the tranny- again...  :argh:
Scott

2001 CTD, 4.5" Lift, 35's, 5" turbo back exhaust, banks wastegate actuator, some bully dog thing

Offline Justviper1

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Re: CEL & Tach stops working
« Reply #9 on: October 29, 2008, 03:44:58 am »
How many miles are on it?  Don't give up yet.  I have been discouraged a lot with mine but in the end once everything is running good and you lean into it and feel the the big green monster come alive there is no better reward!
01 Ram 2500 QCLB 150 HP DDP Injectors, APR Studs, HTT 71 series turbo, Industrial Injection VP44, 4.5 Skyjacker lift, 35x12.50R16 tires, 5 Inch Custom Dual Exhaust, AFE Stage 2, AirDog 150, Adrenaline with Pulse V2, T/C lockup switch, Billet Garmon Transmission, LED taillights, Projector Headlights with HID High,Low and Fog Lights all LED Putco exterior lights

Offline burban2002

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Re: CEL & Tach stops working
« Reply #10 on: October 29, 2008, 04:16:16 am »
I doubt its a cam gear--they are pretty stout.  I think what those guys said is right--swap out that bad boy and you should be good to go for another 100K :up:
Edge Comp thanks to JakeBrake

Offline Motorbrreath

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Re: CEL & Tach stops working
« Reply #11 on: October 29, 2008, 04:37:38 am »
 :smartass:


1993 W250 12 valve
hx40, 75hp sticks, m4, 4000 gov, arp's , 60lb springs, electric lift pump, timing advanced, full power screw bottomed, smoke screw turned up, star wheel turned 2 turns.
Chris

Offline jakebrake

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Re: CEL & Tach stops working
« Reply #12 on: October 29, 2008, 05:51:15 am »
hell you just got about every known problem fixed on your truck, dont sell it now over a $100 sensor.
*2006 Charger SRT8
*2006 Durango SAR Modified
*1985 CJ-7 with a few stock parts left

Special thanks to Rich at www.doghousediesel.com

Offline Scott91370

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Re: CEL & Tach stops working
« Reply #13 on: October 29, 2008, 09:51:23 pm »
Ain't that the truth and it's only a $60 sensor...  ;D

The only reason I say I may get rid of it is because it's 'winter' and I won't be towing the boat.  But honestly, the way prices on trucks have dropped in the last year I couldn't pay it off if I sold it.


Truck just turned 200,000.

Notice the charging system gauge & temp gauge vs. the tach.
Scott

2001 CTD, 4.5" Lift, 35's, 5" turbo back exhaust, banks wastegate actuator, some bully dog thing

Offline mayfair

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Re: CEL & Tach stops working
« Reply #14 on: October 29, 2008, 09:55:37 pm »
Scott, if I were you ( and I was once ), I'd save myself a LOT of aggravation, bite the bullet, and let the dealer do this job. Yeah, you'll pay for an hour of their time, however you'll easily spend 4+ hours on trying to do it yourself. It's a REAL PITA !! Dave can get you the sensor, and then you just take it with you to the dealer and let them install it.

 

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