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Just put in a new used engine runs good but when test

Customer Question
Just put in a...

Just put in a new used engine runs good but when test driving the train went into limp mode & stays in 2nd gear checked code in key mode op700 no other codes don't know train was bad & caused blown engine

Mechanic's Assistant: How old is the transmission? Have you checked the brake switch?

Trani rebuilt around 100K but never worked right engine had 313K

Mechanic's Assistant: What is the model/year of your Dodge?

2005 grand caravan sxt 3.8

Mechanic's Assistant: Are you fixing your Grand Caravan yourself? What have you tried so far?

Yes I'm thinking the input speed sensor because it hard to plug in

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Not now

Submitted: 9 months ago.Category: Dodge
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Answered in 1 minute by:
9/16/2017
Dodge Mechanic: xsvector, Auto Mechanic replied 9 months ago
xsvector
xsvector, Auto Mechanic
Category: Dodge
Satisfied Customers: 17,118
Experience: asetech
Verified

po700 is a generic way of saying there are codes in the TCM do you know anyone with a more advanced scan tool that will access trans codes?

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Customer reply replied 9 months ago
Hi john
Dodge Mechanic: xsvector, Auto Mechanic replied 9 months ago

hello

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Dodge Mechanic: xsvector, Auto Mechanic replied 9 months ago

po700 is a generic way of saying there are codes in the TCM do you know anyone with a more advanced scan tool that will access trans codes?

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Customer reply replied 9 months ago
if calling you is it 26 more plus 23
Customer reply replied 9 months ago
what happened where u go
Dodge Mechanic: eric remington,
 replied 9 months ago
eric remington
Category: Dodge
Satisfied Customers: 742
Experience: mechanic/service advisor at topline auto
Verified

wh​en you are in 2nd gear that is the computer putting it in second to save the transmission from damage

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Customer reply replied 9 months ago
Hi Eric if you call me will it be 26 added to the 28 I just paid
Dodge Mechanic: eric remington,
 replied 9 months ago

I proposed so that we can make call

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Dodge Mechanic: sprinkles08, Chrysler/Dodge/Jeep master tech replied 9 months ago
sprinkles08
sprinkles08, Chrysler/Dodge/Jeep master tech
Category: Dodge
Satisfied Customers: 23,988
Experience: ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans and Hybrid Specialist
Verified

Hello and welcome to JustAnswer!

P0700 sets in the engine controller when there are fault codes set in the transmission controller. There are dozens of things that can cause the trans to go into limp in including speed sensors, solenoids, pressure switches, wiring, internal trans issues, the trans controller, integrated power module, and front control module. The first step in diagnosing the problem will be to read fault codes from the TCM and then testing can be done from there based on the findings.

I hope that helps! My goal is your satisfaction today. If you feel I've been professional and helpful, your 5-star rating at this time is most appreciated. However, if you still need my help you can reply back here and I'll respond as soon as possible! Thank you!

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