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Ask Don - Mo Lurch Your Own Question
Don - Mo Lurch
Don - Mo Lurch, Aftermarket & Factory Electronics
Category: Chrysler
Satisfied Customers: 558
Experience:  Cert. Chrysler Warnty, Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years
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96 chrysler LHS: obd2 & 1 to bring up codes..turn ignition..15 seconds

Customer Question

96 chrysler LHS 3.5 Problem - can not get Can obd2 & 1 to bring up codes. It says to turn ignition on. Ignition is on.
PROBLEM is I start the car in 15 seconds it shuts off. I start car put it in gear it shuts off immediately
Submitted: 8 years ago.
Category: Chrysler
Expert:  Ricardo Hohl replied 8 years ago.
hi, did you at any time replace the pcm or body computer on this car? does the engine light go on with key on and engine not running? is the security light on?.
Customer: replied 8 years ago.
yes the pmc computer was changed and the engine light is on. also able to turn key off and on for check light but only get code 11 - 12 - 55
Expert:  Ricardo Hohl replied 8 years ago.
ok, was this a use computer and did you had this problem before the computer was replace?
Customer: replied 8 years ago.
yes the same problem happened. The computer was changed with the same numbers and before it was removed the other car ran fine.
Expert:  Ricardo Hohl replied 8 years ago.
ok do you see a security light on at the instrument cluster?
Customer: replied 8 years ago.
I just checked and did not see a security light
Expert:  Ricardo Hohl replied 8 years ago.
ok then wen you replace computers from one car to another the minute you start the vehicle the computer does a rolling code test with the other computers on the network and if the code does not match then the pcm will shut fuel and spark off, and because you say the engine shuts off exactly with in a couple off seconds that leads to believe that this is a security problem and that is why the scanner wont communicate with the pcm because its not been recognise on the network, wear you able to communicate using the old computer?
Customer: replied 8 years ago.

sorry I did not tell you I am trying to fix this from the owner. I am going to put the old computer back in and see what was wrong with it. I have to go to his home and get it.

 

I think he said he was having the same problem. This car was gotten fro someone that was having problem before this person. They would not say what they did or the causes.

 

How do I get back to you after replacing the computer??

Expert:  Ricardo Hohl replied 8 years ago.

i will be on line don't worry just come in and ask for me.

Customer: replied 8 years ago.
thanks for the message I will be out doing more checking and will reply later.
Expert:  Ricardo Hohl replied 8 years ago.
ok.
Customer: replied 8 years ago.

96 chrsyler lhs

 

I put the old computer back in and it gave me code for ignition key -12-65-53-55-35-31

 

it still would not reconize the OB 11

Expert:  Ricardo Hohl replied 8 years ago.
hi, sorry for the delay are you there?
Customer: replied 8 years ago.

good morning

 

np problem with the delay I also put mine on hold because the owner went to see there parents this 4 th of July and are not planning there return till Thursday the 8th of July.

Expert:  Ricardo Hohl replied 8 years ago.
ok, do you still have the car with you?
Expert:  Ricardo Hohl replied 8 years ago.
ok the codes you have present are hard codes and one includes pcm internal failure ,i see to many codes ,can you do a battery reset again and lest see what codes go on this time.
Customer: replied 8 years ago.

I will go to there house later and disconnect the battery and check the codes again.

 

I have a hunch that the engine my have been replaces with a used engine and it my not match the old engine.

 

How can I find out what the code numbers are the right numbers for this car??

Expert:  Ricardo Hohl replied 8 years ago.
well there is the 3.5 liter and the 3.5 HO check wish one you have and let me know .
Customer: replied 8 years ago.

hi transman

I disconnected the battery and all I got from the computer was code 55.

The engine should be a 3.5 liter from the hood decal. With the engine replaced I would not know if that is correct. The owner will be home Thursday and we are going to go to the shop that changed the engine and get more information.

Expert:  Ricardo Hohl replied 8 years ago.

ok, code 55 is a normal code it states END OF CODES MESAGE, its a normal operating code but you should had code 12 also wish means BEGINNING OF CODES, you need to find out what engine you have if HO 3.5 or not, if the right engine is on then you need to find out if the right pcm is on by getting the pcm number call the dealer and ask parts department what is the pcm # XXXXX your car and match it up with what you have, if you cant do that then let me know i will look it up but i will need the vin# XXXXX your car and the pcm # XXXXX have right now.