1990 Ford Thunderbird SC Q&A
1990 Ford Thunderbird SC Question: the car was hardstarting so i replaced the camshaft positioning sensor...
Start with the basics, spark plugs good, no vacuum leaks,perhaps check compression is even in all cylinders, look at the old spark plugs see that they are all the same color, none are mechanically damaged or oil fouled. - patrick mannion
Your check engine light must be on. What are the trouble codes? - PARTS GUY