1999 Isuzu Rodeo How do you fix time delay windshield wipers that only work intermittently motor is fine?

Answer 1

from http://isuzufaq.ibctech.ca/#faq60 ... Intermittent wiper function has failed, (it begins to sweep, and stops about 1/4 of the way through the cycle, AND wipers stop in position when turned off. (they do not return to a home position). It stops working due to a bad relay chip on a circuit board (I have this same problem- Ryan). You can replace the whole board for 200 bucks or you can replace the one chip (no clue as to who to buy it from). Here are a couple of write ups and picture of the board: If you know how to solder on a circuit board you can fix the problem for around $7. A replacement relay for the one on the alarm and relay control unit can be purchased from Mouser electronics for around $7 with shipping. Part 551-EQ1-22111S. Phone 800-346-6873. The faulty part was the alarm control unit. It controls the front and rear wipers as well as part of the alarm system. The part was number is 8-97240-466-0 its made by Denso for Isuzu. Cost $ 210.11 from Austin Isuzu. Kind of expensive, but I did save on their labor charges. It is located behind the dash under the right hand vent. To access it you should remove the glove box (1 screw on each hinge) There is another black control unit below the light grey (or green) box you are replacing. This black box is held in by 2 screws. I removed this box (also part of the alarm) There was no need to disconnect the wire going to it (Black box), there was plenty of slack. Remove the one screw securing the alarm control unit and slide the unit down and out. there are two clip in plugs that connect it to the wiring harness. Plug these into the new part and test your wipers before completing the installation. Be careful not to drop any of the screws you remove, because if you have to pull the kick panel off, it can be tough getting the grommet back together through the hole in the carpet. I have pictures to show the placement of the part, but once you have the new part in your hand and the glove box off, it is pretty easy to spot looking up and to the right of the vehicle from the passenger side footwell. I had trouble removing the two screws that mounted the black box below the alarm box. One of them was stuck tight. I was able to remove the black box from the metal bracket by releasing three clips; two on the driver's side and one on the aft side. After that it was fairly simple to get the alarm box out. A plunger style solder sucker was essential to removing the old relay from the alarm board. http://www.automotiveforums.com/vbulletin/showthread.php?t=223464&highlight=wiper photos: http://files.automotiveforums.com/gallery/showphoto.php?photo=20764&password=&sort=1&cat=500&page=1