p1698, and torque converter won't lock up..
#1
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p1698, and torque converter won't lock up..
Does anyone have an idea where to start with this problem? I have a 1998 xj 4x4 4.0 w/aw4. The check engine light came on and I pulled the code. On-line its says no bus from tcm (transmission control module). Then I notice the torque converter was not locking up. It will lock up if i put the pedal down farther than usual but then unlock as soon as I try to maintain a constant speed. Is this a bad ground issue? A tps issue? If so, what can I do to check these components? Thank you sincerely!
#2
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you answered your own question, your trans ctl mod is not comunicating therefore the vehicle is in limp home mode , yes the converter will lock but only when the PROM tells it to. Sadly this is not really a condition your can check without a machine that comunicates with the trans. You can check all powers and grounds out of the computer going to that circut but its a very time consuming job . I would take to a local trans shop and have them check it out.
#3
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Year: 1998
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not really all that can be tested right at the plug for the TCU...the three solenoids including TC lock can be ohms tested from this plug rather quickly also.
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