| Subject: | 1998 Mitsubishi Mirage |
| Question: |
---------- FOLLOW-UP ---------- QUESTION: We ruled out the cat we took the whole exhaust system apart and blew air through it and there were no clogs so we are back to square one. A guy at the part store said that it could possibly be the fuel pump and the mechanic thinks it could be the cold start sensor. Might you have any other advice? |
| Answer: | Elizabeth, Checking the fuel pump is definitely worth doing. If you have yet to replace the fuel filter, you should do that. The fuel pump can be activated by simply applying a 12 volt source to it. Your mechanic can hook up a pressure gauge to the fuel line to see if the pump is performing nominally. Your mechanic can also check the "cold start sensor" (there are several sensors in play during a cold start) by simply bypassing those senors with specific resistors to mimic a warm engine. Your mass air sensor holds a couple of those sensors, so your mechanic may have luck looking there. Good luck! |