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Discussion Starter #1
well just put the ride on the road all legal now and went to the wifes work to get some cash the car would not start,just turn over and over.the after a while it started .so off to ct to get a part died at the freaken lights.wouldent start.got a sensor and came back after suppe to see dame thing started wright up ...what do u guys think any info would help later dave
 

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Discussion Starter #2
well just went out to the car to see codes this is what i came up with 3772 now is that 37 and a 72 or what do u guys think
 

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Ok code 37 is: Incorrect input state detected for the Park/Neutral Switch. Sound's like that switch has gone bad. And code 72 is : Catalyst Efficency Failure. Your Cat is going bad to. As for the cranking over and not running, it could be a list of things going bad. But you started at the top of the list with the Crank and Cam sensors. After that it could be a faulty ASD Relay too.
 

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Discussion Starter #4
well i put a new crank sensor in and it runs like a bag of ****.so i put the old one back in ,and i even reset the computer .what now
 

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drac1 said:
well i put a new crank sensor in and it runs like a bag of ****.so i put the old one back in ,and i even reset the computer .what now
Umm, please be more clear on how she run's. Also after you reset the computer and cleared the codes. Check to she if new ones show up.
 

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Discussion Starter #6
just ran like it waz spipten and spurding and know i forgot to get the code on the new one but will try again tommorow thanks guys
 

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Discussion Starter #7
the guy that safteyed my car use to work for dodge.he said the crank sensor has a button on the end for clearence,the when u start the car it will come off.now the one i got looks the same ase the old one but make the car run like ****.so im going to put the new one in ans see in again to see what codes i get...later dave.could he be talking about the cam sesnor with the butten
 

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No he's right, it does have a paper spacer. Here how to install the sensor:

To install:

If installing the original sensor, clean off the old spacer from the sensor face. A new spacer must be attached to the sensor face before installation. If the sensor is being replaced with a new one, confirm that the paper spacer is attached to the face of the new sensor.

Slide the sensor into the hole in the transaxle and push the sensor in until contact is made with the drive plate. While holding the sensor in this position, install and tighten the retaining bolt to 9 ft. lbs. (12 Nm).

Plug the CKPS wiring connector into the wiring harness.

You must have that paper spacer though.
 

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Discussion Starter #9
it did not come with a spacer .just the sensor in the box thats it,i knew i should have said something about the spacer,**** **** .can i do it with out the spacer
 

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drac1 said:
it did not come with a spacer .just the sensor in the box thats it,i knew i should have said something about the spacer,**** **** .can i do it with out the spacer
Nope, you need the spacer to set the right space between the sensor and the drive plate. The sensor will not work right if the space is off.
 

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drac1 said:
the guy that safteyed my car use to work for dodge.he said the crank sensor has a button on the end for clearence,the when u start the car it will come off.now the one i got looks the same ase the old one but make the car run like ****.so im going to put the new one in ans see in again to see what codes i get...later dave.could he be talking about the cam sesnor with the butten
The Cam sensor has the paper spacer. The Crank sensor does not. What is your native language? How long have you been trying to spell in English?
 

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Discussion Starter #12
man i will try to be nice but buddy i dident know we were in school i am asking a question and want a simple answer DONT BE A ASS later dave
 

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The answer doesn't get any simpler. If you want to keep looking for a crank position sensor with a paper spacer, go right ahead. Calling me an ass will not change the outcome of your search.
 

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I got that info from the service manual. Here's everthing thats there, but it does say a paper spacer. I know about the spacer on the CAM sensor since I've had to replace that one , but I have not had to replace the Crank sensor.

Crankshaft Position Sensor (CKPS)

OPERATION

See Figure 1


Fig. 1: The timing slots on the crankshaft position sensor



The Crankshaft Position Sensor (CKPS) detects slots cut into the transaxle drive plate extension. There are 3 sets of slots, each set containing 4 slots, for a total of 12 slots. Basic timing is determined by the position of the last slot in each group. Once the PCM senses the last slot, it determines crankshaft position (which piston will next be at Top Dead Center/TDC) from the camshaft position sensor input. The 4 pulses generated by the CPS represent the 69°, 49°, 29°, and 9° Before Top Dead Center (BTDC) marks. It may take the PCM one engine revolution to determine crankshaft position during cranking.

The PCM uses the camshaft position sensor to determine fuel injector sequence. The PCM determines ignition timing from the CKPS. Once the crankshaft position has been determined, the PCM begins energizing the injectors in sequence.

The CKPS is located in the transaxle housing, above the vehicle speed sensor. The bottom of the sensor is positioned next to the drive plate.

The distance between the bottom of the sensor and the drive plate is critical to the operation of the system.

TESTING

See Figures 2, 3 and 4


Fig. 2: Crankshaft and camshaft position sensor wiring schematic-1993-95 models




Fig. 3: Crankshaft and camshaft position sensor wiring schematic-1996-97 models




Fig. 4: Crankshaft position sensor connector pin coloring



Before testing any electrical component, inspect the wiring and connectors for damage. Also wiggle the connectors to ensure a that they are firmly engaged. For this procedure a dwell meter, or the equivalent, will be needed.

Unplug the Crankshaft Position Sensor (CKPS) connector.

Turn the ignition ON.

Using a voltmeter, measure the voltage from the wiring harness connector 8-volt supply circuit (orange wire) to ground. Refer to the accompanying wiring illustration.

If the voltage is 8-9.5 volts, skip to the next step.

If the voltage measured is lower than 8 volts, or higher than 9.5 volts, the CKPS is not receiving the correct current to function properly. There is a problem in the wiring or related components.

Turn the ignition OFF.

Attach the CKPS wiring and engine wiring harness connectors back together.

Attach a dwell meter to the battery. Attach the lead probe of the dwell meter to the sensor signal wire (light blue with dark blue tracer) by backprobing the connector or by using jumper cables between the terminals. Refer to the accompanying wiring illustration.

Place the dwell meter out of the way of any moving components of the engine, and in a position in which it can be seen once the engine is started.

Turn the engine ON.

Watch the dwell meter for one or two minutes while the engine is idling. The dwell shown should be a steady 49-51%. If there is any fluctuation, or the dwell time is not 49-51% the CKPS is defective and must be replaced with a new one.



REMOVAL & INSTALLATION

See Figure 5


Fig. 5: The sensor is located on the passengers side of the transmission housing, above the differential housing



The sensor is located on the passengers side of the transmission housing, above the differential housing. The bottom of the sensor is positioned above the drive plate.

Disconnect the negative battery cable.

Unplug the CKPS electrical connector from the wiring harness.

Unscrew the CKPS retaining bolt.

Pull the sensor straight out of the transaxle housing.

To install:

If installing the original sensor, clean off the old spacer from the sensor face. A new spacer must be attached to the sensor face before installation. If the sensor is being replaced with a new one, confirm that the paper spacer is attached to the face of the new sensor.

Slide the sensor into the hole in the transaxle and push the sensor in until contact is made with the drive plate. While holding the sensor in this position, install and tighten the retaining bolt to 9 ft. lbs. (12 Nm).

Plug the CKPS wiring connector into the wiring harness.

Connect the negative battery cable.
 

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Discussion Starter #15
the sensor i have like falls right in the hole .the factory one u have to wiggel it to get it out and in snug fit .im trying to find a pick of the sensor.sorry jedgxe for calling u an ass but why would u say something like that :doh:
 

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Discussion Starter #16
ok took the old one out again.its gray.the new one black but i noticed the the old one is like a magnet and the new one aint so im going to put the new one in again and see what codes come up guessing its gonna run like a bag of **** lol.does anybody have a pic of the crank sensor with the spacer on it .thanks dave
 

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I apologize for the wise ass language questions. I have a 1st gen FSM ('94) and a 2nd gen FSM ('02-'03). Neither of them say anything about a paper spacer on the crank sensor. Both books say the cam sensor has a paper spacer. When I replaced both the cam and crank sensors on my '94 , only the cam sensor came with a spacer. The crank sensor depth will always be the same because it's mounting surface goes against the differential housing and stops. The cam mounting bracket has an elongated hole on the side and needs the spacer to set the proper depth. What model year is your car ? Strongt's wiring diagram shows a difference between 93-95 and 96-97.
 

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Discussion Starter #18
its a 94 but i have put the new sensor in and now it works like a charm for now lol i must of not cleared the comp long anought.but time will tell i guess.thanks guys for the help and jedgxe later bro piece out dave :gross_11:
 

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Check your codes again. I'm a bit confused, your earlier post says you had a 37 and a 72, but my '94 FSM does not show either of those codes. Is it possible that you mis-read the flashes? Which engine do you have?
 
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