Archived Crankshaft Position Sensor Location/Pic?

[AirAmigo]

Hello,



I have a 2002 Dodge Ram 24V HO Turbodiesel pickup truck. It is the shortbed, with the 6 speed manual transmission. I've talked to a few people on this board, and they told me my crankshaft position sensor needs replacement.



Where is this thing on my truck? I've searched the archives and can not find a pic of it. I have the starter out.



Help me please...



Keith

North Bonneville, WA

 

[jrobinson2]

I think an '02 only has a cam sensor, no crank sensor. I am sure it only has one or the other, not both. Look behind the injection pump for the cam sensor, if its there you dont have a crank sensor.



Jared

 

[AirAmigo]

Okay, let me describe the problem that I'm having. Recently the dodge will be driving along, and then I'll get a loss of power. It seems to happen in the 40-50mph range. When the loss of power happens, I'll have my foot to the floor, and I can barely do 50mph speed limit. After a little bit of having the pedal to the floor, the truck will take off like a rocket again. These episodes have been happening more frequently lately. The truck has 113,000 miles on it now.

 

[KWentling]

The '98 24-valves had both. I know. I replaced both in the FIL's truck. Like Jared said, you should only have the cam sensor. Crank sensors went out sometime in '00's. I'm no 24-valve expert by any means, but it sounds like a fueling issue to me. Have you checked for codes? Do you have a fuel pressure gage? When was the fuel filter changed last?



Kim

 

[CEpp]

crank sensor is behind the starter on the block.

 

[jnelson]

Come on guys!! We all know there in no Crank Shaft Pos. sensor on an 02.

There is however a Cam Shaft Posistion sensor just above the injection pump.



Follow the wiring harness that goes down to the injection pump. You wil notice a 2 wire branch coming off of it . that leads to the Cam Shaft Pos Sensor. Your symptons are very much like I had on my 01.



Hope this helps.



PS. Its a buger to get to.

 

[KWentling]

Cam shaft sensor is below the injection pump, not above. And, yes, it is a bugger. My wife had to start the bolt back in. My hands were too big.



Kim

 

[DavidC]

If your tach continues to function during this it is time to look elsewhere as the tach will be either eratic or quit altogether.



Dave

 

[AirAmigo]

Well I returned the crankshaft position sensor, that I purchased from NAPA the other day. The dodge dealer confirms that the 2002 does not have a crankshaft position sensor. The 2001 did, but the 2002 does not. I looked into getting a scanner for engine codes, and NAPA wanted 800 dollars for one. That's a bit much for me, so I called my buddy at a near by auto shop, and he's going to scan my truck for free tommorow. I'll post the codes, when I get back... ..... but I'm starting to think it's the dreaded lift pump, going out. Still starts and drives fine, just that occasional drop in oomph, that after flooring the gas peadal for a few, comes back with a whop in power. The frequency of these episodes, increases during hill climbs.



Thanks,

Keith

 

[MMeier]

Well I returned the crankshaft position sensor, that I purchased from NAPA the other day. The dodge dealer confirms that the 2002 does not have a crankshaft position sensor. The 2001 did, but the 2002 does not. I looked into getting a scanner for engine codes, and NAPA wanted 800 dollars for one. That's a bit much for me, so I called my buddy at a near by auto shop, and he's going to scan my truck for free tommorow. I'll post the codes, when I get back... ..... but I'm starting to think it's the dreaded lift pump, going out. Still starts and drives fine, just that occasional drop in oomph, that after flooring the gas peadal for a few, comes back with a whop in power. The frequency of these episodes, increases during hill climbs.



Thanks,

Keith

Lift pump or the VP itself perhaps?

 

[Diesel Nut]

cycle the from off to on (run) 3 times ending in run with a 1 second pause between each movment and your codes will be displayed in the odometer window.

Just don't start the motor.

 

[AirAmigo]

I wish i knew about this earlier, I already dropped the truck off to have the codes scanned for me. Thanks.

 

[AirAmigo]

Okay 2 codes come up

1) 1693

2) PO 216



That's the order of the numbers, so what does that mean?

 

[AirAmigo]

Okay I found the code list, but I still don't understand the meaning of CODE 1693.

The PO 216, lists a fuel injection pump restriction.

Does that mean my lift pump is toast?

How do I found out if it's just the lift pump, and not the fuel injection pump?



It still starts and drives fine, except for that occasional drop in oomph that lasts for a short bit.

 

[DavidC]

216 is usually a death sentence 1693 is a companion code which basically says the message is delivered and you will need money for the 216. You need a 15psi pressure gauge to test the lift pump I believe at the shrader valve for your model. I hear cumminsstuff.com is a good place for the pump, there is a current post going right now on that vendor.



Dave

 

[AirAmigo]

216 is usually a death sentence



Dave

Could you be more specific? Death Sentence?

 

[DavidC]

Could you be more specific? Death Sentence?

216 refers to internal failure in the Vp44 injection pump. I have not heard of any surviving for very long after this code showed up. I would definately check your lift pump pressure as it could be very low or non existant which can lead to the VP44 failure. The shrader valve I believe is on the side of the VP44 for a mechanical pressure gauge. The first thing on your upgrade list is to install a gauge in the cab to keep tabs on pressure. It is a shame your only 13k miles past the 5 year 100k engine warranty.





Dave

 

[DavidC]

Code list

http://www.obdiicsu.com/Docs/DTC/DTCData.html



Scroll down to 216



Dave

 

[AirAmigo]

Well I have the lif pump off, and am almost ready to pull the injection pump off. I stopped last night, when I came to the point that I have to make sure the engine is at TDC for #6. Figured I'd restart today, after I get off at work around 6pm.



How critical is it that the TDC line is exactly inline with the TDC mark? If I'm 1/16 of a inch off, is that going to matter?

 

[DavidC]

I have not done one personally but I would think it is not that exact. Maybe use a center punch or mark both gears (paint?) for reassembly.



Dave