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Tim's Auto Repair
Tim's Auto Repair, Mechanic
Category: Car
Satisfied Customers: 15383
Experience:  Have owned a repair shop for 25 yrs.
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My car revs on start up

Resolved Question:

My car revs on start up. plus it's throwing a code P1684. What is wrong with it. It also stalled when I put it in reverse.
Submitted: 5 years ago.
Category: Car
Expert:  Tim's Auto Repair replied 5 years ago.
HiCustomer Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:

-What year is your Car?
-What make and model is your Car?
-How many miles are on your Car?
-What type of engine is in your Car?
-What have you already tried?

Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Customer: replied 5 years ago.

2000 dodge intrepid 2.7 I dont know how many miles because motor was replaced 1 1/2 yrs ago . The mechanic forgot to get the mileage for this motor so I never got it. over 100,000 i would imagine


Expert:  Tim's Auto Repair replied 5 years ago.

sorry i missed you


this code means that the computer has lost power,maybe the battery has been replaced or some other part..if not,you may want to do a load test on the battery and charging system,the battery or the alternator may be going bad


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Trouble Code: P1684


Battery Has Been Disconnected

Possible Causes:

Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced


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