it does this heat up thing, then goes away, sometimes by stopping and letting it cool and sometimes it just does, the temp gauge in the cab can fluctuate a lot too, she says she can tell that it is hot though, can she burp it on the road? It's a 2.4 L diesel, 2LT engine, 1989.
Paul

owned a '87 6 cyl raider when it was 8 years old, wish known then what I know now, looking for one again.