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Just replaced my TPS sensor now im having transmission issues?
Ok so i replaced the TPS sensor...
now im having transmission shifting issues but it worked fine the other day... 1988 limited 4L, auto, 242 is there a special adjustment you need to make for the TPS... i know that the transmission and the TPS have some relation no? help please. |
Yes, the TPS on RENIX vehicles must be adjusted properly. Very important. Here is more............
RENIX TPS (Thanks to Joe Peters from NAXJA for this information) MANUAL TRANSMISSION: RENIX manual transmission equipped XJs have a three-wire TPS mounted on the throttle body. This manual transmission vehicle TPS provides data input to the ECU. The manual transmission TPS has three wires in the connector. Wire "A" is positive. Wire "D" is ground. Remove the three-wire connector from the TPS. Key ON, measure voltage from "A" positive to "D" ground. Note the voltage reading--this is your REFERENCE voltage. Now, reconnect the three-wire connector to the TPS. Key ON, back-probe the connector at wires "B" and "D". Measure the voltage. This is your OUTPUT voltage. Your OUTPUT voltage needs to be seventeen percent of your REFERENCE voltage. Adjust the TPS until you have achieved this percentage, if you can't achieve the correct output voltage replace the TPS and start over. AUTOMATIC TRANSMISSION: RENIX automatic transmission equipped XJs have a TPS with two connectors. There is a three-wire connector, same as the manual transmission vehicles have, and it is tested the same as the manual transmission equipped vehicles--FOR ENGINE MANAGEMENT RELATED ISSUES. However, the automatic TPS also has a four-wire connector. For the automatic transmission equipped vehicles the four-wire connector provides data to the TCU. Disconnect the four-wire connector. Key ON, measure voltage between "A" positive and "D" ground. Note the voltage. This is your REFERENCE voltage. Now, reconnect the four-wire connector to the TPS. Back-probe the connector at wires "B" and "D". Measure the voltage. This is your OUTPUT voltage. Your OUTPUT voltage needs to be eighty-three percent of your REFERENCE voltage. Adjust the TPS until you have achieved this percentage, if you can't replace the TPS and start over. So, if you have an automatic equipped XJ your TPS has two sides--one side feeds the ECU, and the other side feeds the TCU. If you have TRANSMISSION issues check the four-wire connector side of the TPS. If you have ENGINE issues check the three-wire connector side of the TPS. For those with a MANUAL TRANSMISSION--the TPS for the manual transmission XJs is stupid expensive. You can substitute the automatic transmission TPS which is reasonably priced. |
issue fixed... thanks
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Originally Posted by DaveVmax
(Post 816592)
issue fixed... thanks
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this helped me a lot.
how to adjust the TPS on a Jeep Renix 4.0L w/ aw4 trans heres what i found, it helped me a lot and i'm sure it will help others on here. this is for the renix (non HO)4.0L with the aw4 auto trans. http://autorepair.about.com/library/faqs/bl232i.htm I do know the adjustment procedure is different for manual transmissions and automatic transmissions. So here is the procedure you need. NOTE: A digital voltmeter is required to successfully complete the adjustment of the TPS. The DRB II or an equivalent scan tool can also be used to adjust the TPS. Refer to the scan tools' manual for adjustment procedure. CAUTION: Do not disconnect the TPS electrical connector; instead, insert the voltmeter test leads into the back-side of the electrical connector. When inserting the test leads, make sure that the wires and harnesses remain undamaged. 1.Turn the ignition switch to the ON position. 2.Find the Four-way TPS connector and insert the black lead of the voltmeter into the backside of terminal (D). Insert the red lead of the voltmeter into the backside of terminal (A). Make sure that the throttle plate is completely closed against the throttle stop. Note the voltage reading of the voltmeter as it is connected across these two terminals; this reading is the input voltage. 3.Remove the red lead of the voltmeter from the backside of terminal (A) and reinstall it into the backside of terminal (B). Make sure that the throttle plate is completely closed against the throttle stop. Note the voltage reading of the voltmeter as it is connected across terminals (B) and (D), this reading is the output voltage. 4.Divide the output voltage reading by the input voltage reading. The ratio should be between .825 and .835 (.830 optimum). 5.If the voltage ratio is not within this range, adjustments can be made using the two mounting screws. To make large adjustments, loosen the bottom mounting screw and pivot the sensor. To make small adjustments, loosen the top mounting screw and pivot the sensor. 6.Disconnect the voltmeter, and tighten the mounting screws securely. |
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