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1997 dodge neon crank sensor

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7 years 9 months ago #876 by vanessa.baldwin
I have a 1997 dodge neon and we have gone through 3 crank sensors and every one of them get chewed up. We put one in go a few miles and then the car dies out. Please help

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7 years 9 months ago #878 by matt.white
You meen physically gets damaged or electrically burns out? Is it a VRS or Hall effect? Has anyone checked supply voltage?

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7 years 9 months ago #890 by ScannerDanner

vanessa.baldwin wrote: I have a 1997 dodge neon and we have gone through 3 crank sensors and every one of them get chewed up. We put one in go a few miles and then the car dies out. Please help


How about some pictures of the chewed up sensor?
I think maximum file size is 750kb, I think.

Don't be a parts changer!

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7 years 9 months ago #891 by ScannerDanner

matt.white wrote: You meen physically gets damaged or electrically burns out? Is it a VRS or Hall effect? Has anyone checked supply voltage?


Good questions Matt. I want to know that as well.
Oh, and it is a hall effect on these with a 5v pull-down design signal circuit (all Chryslers)

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7 years 9 months ago #906 by Chriscoy
Sounds like its mechanical damage to me. If the sensor is getting chewed up by the flywheel / flex plate you probably need to shim it up .010 to 0.030 to prevent that.

Years ago I remember seeing a shim on a dodge crank sensor to prevent this but I believe it was a 4.7l in a Grand Cherokee.

Changing parts is easy, Troubleshooting is an art

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7 years 9 months ago #920 by Tyler
Replied by Tyler on topic 1997 dodge neon crank sensor
I'm also wondering about some kind of mechanical damage, too. Might be worth spinning the crank by hand while watching the flex plate windows.

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7 years 9 months ago #936 by matt.white

ScannerDanner wrote:

matt.white wrote: You meen physically gets damaged or electrically burns out? Is it a VRS or Hall effect? Has anyone checked supply voltage?


Good questions Matt. I want to know that as well.
Oh, and it is a hall effect on these with a 5v pull-down design signal circuit (all Chryslers)


well there you go. Learn something everyday.

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7 years 9 months ago #947 by vanessa.baldwin
Here it is
Attachments:

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7 years 9 months ago #952 by Tyler
Replied by Tyler on topic 1997 dodge neon crank sensor
WOW, that's... melted? :blink: Not what I expected to see at all.

Kinda looks like there was some kind of physical damage, too. Imma look at TSBs and iATN.

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7 years 9 months ago #959 by vanessa.baldwin
The other two that we put in were just chewed up. I don't have pics of the other two though. I have googled this problem and there is absolutely nothing about it.

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7 years 9 months ago #974 by Noah
Replied by Noah on topic 1997 dodge neon crank sensor
:blink: :blink: :blink: :blink: :blink:
If the other ones are just beat up and not melted, I'd say Chris is right on about having to shim that sensor.

"Ground cannot be checked with a 10mm socket"

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7 years 9 months ago #978 by Chriscoy
Automatic trans? Thinking extreme heat may have been a factor.

As far a the physical damage goes on the previous sensors it's most likely an air gap issue between the sensor and flywheel. To check that set the sensor in with out the o ring and have some one rotate the engine by hand and see if the sensor pushes up out of the hole.

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7 years 9 months ago - 7 years 9 months ago #983 by matt.white
Far out. Is that reading directly off the crankshaft? Did the original one fail the same way or has the burning out problem started since an original was replaced?
Last edit: 7 years 9 months ago by matt.white. Reason: Punctuation

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