Go Back   DodgeForum.com > Dodge Vans & CUVs > Dodge Caravan
Sign in using an external account
Register Forgot Password?


Dodge Caravan The Dodge Caravan is the best selling mini van from Dodge. How many Dodge Caravan owners here at DodgeForum.com would agree? Discuss it now!
Sponsored by Dodgetruckparts
Click Here


Engine wont start after sensor replacement

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 01-01-2012, 02:59 PM
Randy Lowry Randy Lowry is offline
Registered User
 
Join Date: Jan 2012
Vehicle: 2000 Grand Caravan Sport
Location: Corpus Christi TX
Posts: 6
fireman5309@gmail.com
Default Engine wont start after sensor replacement

The engine on my 2000 Grand Caravan Sport with a 3.3 Flex fuel engine will not start following replacement of Cam position sensor and Crankshaft position sensor. I replaced them due to engine starting to buck and OBD-II code of P1391 that stated intermittent loss of cmp or ckp. Now the engine wont start and the OBD code is P0601 which says PCM internal fault condition. Anyone have any experience with this and how to fix?
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 01-01-2012, 05:30 PM
Cougar41 Cougar41 is offline
Record Breaker
 
Join Date: Feb 2011
Location: SoCal
Posts: 1,788
Default

The cardboard spacer on the tip of the sensor is there to maintain correct clearance for the sensor? Did you leave them on? Did you disconnect the battery when installing? You may have inadvertently shorted something to ground to create the 601. Inspect the wire harness from the sensors to the PCM. Verify you're getting the reference voltage at each sensor.

I've read a 1391 can be a cracked flex plate. You'll have to inspect it or remove the tranny to verify.
__________________
We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds!
Reply With Quote
  #3  
Old 01-01-2012, 06:13 PM
Randy Lowry Randy Lowry is offline
Registered User
 
Join Date: Jan 2012
Vehicle: 2000 Grand Caravan Sport
Location: Corpus Christi TX
Posts: 6
fireman5309@gmail.com
Default

Cougar,
Thanks for the info. I did disconnect the battery and was very careful about installing the new sensors. I left the cardboard spacers in place as well. All the wires appear to be intact and the engine turns over fine but will not fire. May have to check the distributor now and hopefully that is the cause. I really dont want to remove the transmission as I cant do that at home.

Randy
Reply With Quote
  #4  
Old 01-01-2012, 06:33 PM
Cougar41 Cougar41 is offline
Record Breaker
 
Join Date: Feb 2011
Location: SoCal
Posts: 1,788
Default

Might try putting the old cam sensor back in to see if that changes anything. The crank sensor is usually the culprit for engine cut outs and bucking. 97 and up the cam sensor primary function is to set timing info at start up. After that it's only used as a comparator to the crank sensor for fault status. Distributor on a 3.3 ????

There is an inspection plate on the bottom of the bell housing on a 4 speed 41TE tranny. Sometimes a cracked flex plate can be detected there or by removing the starter. Unfortunately, there are times when it can only be detected by removing the tranny to get a good look.

Got a hunch you know this but just in case the ring gear on the flex plate is what the crank sensor senses to generate it's timing signal. If the plate is cracked and sometimes the bolts sheer, the plate "wobbles" creating erratic sensor data. You see it as hard starting, bucking, stalling.
__________________
We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds!

Last edited by Cougar41; 01-01-2012 at 06:41 PM..
Reply With Quote
  #5  
Old 01-01-2012, 07:06 PM
Randy Lowry Randy Lowry is offline
Registered User
 
Join Date: Jan 2012
Vehicle: 2000 Grand Caravan Sport
Location: Corpus Christi TX
Posts: 6
fireman5309@gmail.com
Default

I guess Im still old school, its the ignition coil pack and not called a distributor anymore. I will keep you posted on what I find out. Thanks for the update.
Reply With Quote
  #6  
Old 01-05-2012, 10:43 PM
Randy Lowry Randy Lowry is offline
Registered User
 
Join Date: Jan 2012
Vehicle: 2000 Grand Caravan Sport
Location: Corpus Christi TX
Posts: 6
fireman5309@gmail.com
Default

Still no luck on starting but I have noticed that after the engine cranks that there is a whistling sound coming from under the power distribution center (PDC) and a clicking that goes on and off for a bit. It feels like the relays are trying to engage but it goes from relay to relay and they are all good. With the error code of P0601 is it possible that the PCM needs to be replaced/reflashed in order to clear the code and get the engine to fire? Just a thought and a symptom that I have noticed.
Reply With Quote
  #7  
Old 01-06-2012, 08:59 AM
mrtinker mrtinker is offline
Registered User
 
Join Date: Dec 2011
Posts: 23
Default

I'm no mechanic so please don't take this to mean too much... but from all the threads I've read on here I think I would replace the PCM next.... Good Luck!
Reply With Quote
  #8  
Old 01-08-2012, 07:16 PM
Randy Lowry Randy Lowry is offline
Registered User
 
Join Date: Jan 2012
Vehicle: 2000 Grand Caravan Sport
Location: Corpus Christi TX
Posts: 6
fireman5309@gmail.com
Default

Ordered a new PCM. Will update with results later this week.
Reply With Quote
  #9  
Old 01-10-2012, 01:00 PM
Nick 98 Nick 98 is offline
Amateur
 
Join Date: Dec 2011
Vehicle: 1996 Dodge grand Caravan, !998 Pymouth Grand Voyager
Location: San Diego
Posts: 41
Default

Where did you order the PCM from? Did they flash it with your current mileage and Vin Number?
Reply With Quote
  #10  
Old 01-11-2012, 09:01 AM
Randy Lowry Randy Lowry is offline
Registered User
 
Join Date: Jan 2012
Vehicle: 2000 Grand Caravan Sport
Location: Corpus Christi TX
Posts: 6
fireman5309@gmail.com
Default

Nick,
I ordered it thru autocomputerexchange.net
Yes they are flashing the rebuild PCM with my vin and current mileage. The cost was better than ordering a brand new one so hopefully this will fix my problem. I will update this thread once it arrives and is installed.
Randy
Reply With Quote
Old 01-11-2012, 09:01 AM
 
 
 
Reply




Tags
grand caravan sport

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 06:27 AM.

Internet Brands, Inc.


Contact Details & Emails