Cam sensor/timing - Dodge Cummins Diesel Forum
98.5-02 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect..NO ADVERTISING .

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post #1 of 19 (permalink) Old 07-01-2010, 12:31 PM Thread Starter
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Cam sensor/timing

My buddy has a 99 dodge just like mine he recently put a new motor in. He says a cam sensor failed and his timing is turned back one notch and this creates a lope to the idle. My question is does all of this hurt the cam and other parts of the truck in anyway??? And do you lose power because the timing it pushed back a notch??? Thanks


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post #2 of 19 (permalink) Old 07-01-2010, 12:40 PM
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if the cam sensor is bad why not replace it?

what year was the new engine out of?

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post #3 of 19 (permalink) Old 07-01-2010, 06:28 PM Thread Starter
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im pretty sure its a 99 as well...

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post #4 of 19 (permalink) Old 07-01-2010, 06:49 PM
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Originally Posted by The Big Green Tractor View Post
My buddy has a 99 dodge just like mine he recently put a new motor in. He says a cam sensor failed and his timing is turned back one notch and this creates a lope to the idle. My question is does all of this hurt the cam and other parts of the truck in anyway??? And do you lose power because the timing it pushed back a notch??? Thanks
Yeah it doesnt sound good IMO. Having the valves open later than they should cant be good.

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post #5 of 19 (permalink) Old 07-01-2010, 06:56 PM
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post #6 of 19 (permalink) Old 07-02-2010, 10:06 AM
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Yeah it doesnt sound good IMO. Having the valves open later than they should cant be good.
The valve timing doesn't change, that is mechanical. Only the fuel timing could be affected, but on another note, the cam sensor is NOT what controls fuel timing on a 98.5-00, that (I believe) is controlled by the crank sensor which has the tone ring. The cam sensor only references TDC on #1 for the computer which could have something to do with timing too but it is my understanding that all that happens with the crank sensor. 01-02 on the other hand has the tone ring on the cam gear (no crank sensor at all) therefore they are another story. I guess if he is getting a cam sensor code then that is where I would start.

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post #7 of 19 (permalink) Old 07-02-2010, 11:34 AM Thread Starter
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would the cam lobes wear out because the timing is back farther than it should be or not??? and i guess with the fuel timing that'd only make the truck a tad slower then huh???

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post #8 of 19 (permalink) Old 07-02-2010, 12:24 PM
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would the cam lobes wear out because the timing is back farther than it should be or not??? and i guess with the fuel timing that'd only make the truck a tad slower then huh???
I mis-read the post initially. Having the injection pump off a tooth does all sorts of interesting things... In the end the ecm just compensates for the discrepancy IIRC.

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post #9 of 19 (permalink) Old 07-04-2010, 05:05 PM Thread Starter
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so turning that timing back would change the fuel timing but would it cause the truck to light lope???

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post #10 of 19 (permalink) Old 07-04-2010, 06:30 PM
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I mis-read the post initially. Having the injection pump off a tooth does all sorts of interesting things... In the end the ecm just compensates for the discrepancy IIRC.
I guess I mis read also, Kind of confusing.... So is that what you are saying is that he intentionally put the gear on 1 cog off? He would have had to pull the front cover to do that, you can't do it by just removing the pump. I took your statement that because the sensor failed his timing is off? Please clarify.

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post #11 of 19 (permalink) Old 07-04-2010, 07:53 PM Thread Starter
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ok heres the deal. he intentionally put the gear one off. then after that his cam sensor failed. really what i'm asking is if this would cause the truck to lope at an idle and if this is harmful to the truck in any way. sorry i didnt clarify that very well. basically he did it because it sounds "cool".

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post #12 of 19 (permalink) Old 07-04-2010, 09:41 PM
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ok heres the deal. he intentionally put the gear one off. then after that his cam sensor failed. really what i'm asking is if this would cause the truck to lope at an idle and if this is harmful to the truck in any way. sorry i didnt clarify that very well. basically he did it because it sounds "cool".
Yeah get that gear back where it belongs. That will do it.

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