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Amedee, Dodge Technician
Category: Dodge
Satisfied Customers: 25228
Experience:  ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
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Caravan SE: My 1990 3.0 caravan goes to full throttle after

Customer Question

My 1990 3.0 caravan goes to full throttle after starting.Throttle cables and TPS ok. Any suggestions?
Submitted: 11 months ago.
Category: Dodge
Expert:  Amedee replied 11 months ago.
Hello and welcome! My name isCustomerand I can assist you with your question. What is the TPS voltage at with the key on engine off?
Expert:  Amedee replied 11 months ago.
Hello! It'sCustomerfrom just answer. I am just checking in to see if you need any further assistance? Let me know!
Customer: replied 10 months ago.
With ignition off there is no voltage on any pin. With ignition on there is a negative deflection on the meter on pins A&B . Resistance check on all pins shows pin C as ground.
Expert:  Amedee replied 10 months ago.
It looks like your payment did not go through..
Customer: replied 10 months ago.
I canceled it!
Expert:  Amedee replied 10 months ago.
Customer: replied 10 months ago.
Did you read my reply about the pin voltage?
Expert:  Amedee replied 10 months ago.
If the TPS is not getting a reference voltage going to it with the key on, then this means the computer is not awake. All powers and all grounds need to be checked going into the computer with the key on. This includes all powers from all fuses, fusible links and even from the ignition switch. If all checks out ok, then the PCM is bad and will need to be replaced.
Customer: replied 10 months ago.
Expert:  Amedee replied 10 months ago.
I am glad I can help! It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "Excellent Service" for assisting you today. Please let me know if you have any further questions.