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Hello forum. This is my first post.
My T&C started going in to limp mode recently but does not show an OBD1 code. It does show a transmission solenoid code. I had a new one put on and it still shows the same code and goes into limp mode. The mechanic is thinking it may be the ECM. I have also talked to a Chrysler mechanic who told me to check the connection to the ECM for corrosion, the battery voltage and replace the speed control sensor before buying an ECM. He also said the air flow sensor can cause a limp mode.
Can someone tell me where the ECM and the airflow sensor are located in the 95 T&C?
Thanks.
 

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2009 Dodge Grand Caravan SXT (3.8); 2003 Dodge Grand Caravan eL (3.8)
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Hello forum. This is my first post.
My T&C started going in to limp mode recently but does not show an OBD1 code. It does show a transmission solenoid code. I had a new one put on and it still shows the same code and goes into limp mode. The mechanic is thinking it may be the ECM. I have also talked to a Chrysler mechanic who told me to check the connection to the ECM for corrosion, the battery voltage and replace the speed control sensor before buying an ECM. He also said the air flow sensor can cause a limp mode.
Can someone tell me where the ECM and the airflow sensor are located in the 95 T&C?
Thanks.
Which engine?
 

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ECM is in the driver's side fender, the intake pulls through it. The MAP sensor (I'm assuming that's what he's calling an air flow sensor as they don't have an air flow sensor) is located on the back side of the intake plenum.

Chances either are causing your limp mode is next to none though. More likely it's a wiring/ground/sensor issue on the transmission itself.
 

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I went to the parts store and got the output sensor but they gave me one with two prongs. Mine has three so I guess I will go back tomorrow. Thanks for the info.
Input and output sensors are on "top" of the transmission and are two wire sensors.
The ones down by the pan are the PRND switch and the range switch, they are 3 wires.
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If it is in limp mode there should a transmission dtc stored. A number of handheld scanners will only pull emission related dtc's. Suggest going to an auto parts store to have the transmission computer module scanned or get a scanner that will pull transmission codes.
 

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It still says the solenoid pack. I’ve already put a new one on. Our local transmission specialist seem stumped.
There was a wiring issue on some of the vans from factory, I've been trying to find the thread on it but am coming up at a loss.

Instead of your mechanic continuing to throw parts, why doesn't he stop and do some proper diagnosing first? You know, the right way to do it?

Check all the grounds in the engine bay. Check all the connectors. Check all the wiring from the transmission to the TCM and ECM.
 

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What are the actual transmission diagnostic codes being reported? There is quite a bit of expertise and insight here to guide you.

One of the first suggestions for any chrysler transmission issue is a pan drop, filter replace, and refill with licensed atf+4. Is it safe to believe this has been done?
 

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Code 52 is a gear ratio error in 2nd gear, meaning the input and output speeds don’t match what the computer expects to see. 2nd gear in this trans is strictly mechanical/hydraulic — if you unplug all the connectors to the trans you’ll still have 2nd (and reverse).

The only cause listed in the manual is an internal transmission problem. I’d say there’s a very remote chance it could be caused by a speed sensor or computer issue, but almost for sure it’s a clutch slipping. You’d almost have to look at the speed sensor signals with a scope to learn anything. Pressure or air tests might tell something.

Does it feel like it’s slipping?

This can’t be a solenoid problem, bottom line.
 

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Discussion Starter · #20 ·
I may have the gave the wrong code. Everything is running together now. I think it was 42. He showed me the computer saying solenoid. It doesn’t feel like it is slipping.
I finally checked the battery and it was bad so I changed it and it did help quite a bit. I drove for three hours yesterday before it acted up where as it was acting up every 10-20 minutes before. But now it has a code in it for air flow sensor. I’m going to clean the ECM connections today and see if that helps.
Thanks for all the help on this. I really appreciate it.
 
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