2002 Nissan Frontier Q&A
2002 Nissan Frontier Question: my engine misfires only when temperature outside is under 40 degrees.
the check engine light is from the missfire. you need to check the plugs, wires, injectors, coolant sensor and check for vacuum leaks. Roy - mastertech6371
You need to retrieve the trouble codes NOW. Do not drive truck untill you get code/codes. Otherwise you may have the expense of catalytic converters. That is much less expensive than going to a parts store to get the code/codes free. - PARTS GUY