I pilot an 1990 FJ62. While taking apart my wateroutlet to replace the thermostat I broke one of the bolts off in the lower half of the housing. Oops. Is there a trick or tool to get it out? or should I just replace the housing while I have it apart. I also bought four of the sensors for the housing. and lately it has been stalling after driving it back and forth in stop and go traffic. Just replaced the TPS had a 51 code come up.