bighuskerinwdm

I took my 2002 Ford Escape in last February for check engine light.
Dealer said that a cylinder was firing at only 75%. Cleared computer called it good, today took it and said same cylinder firing at only 25%. Should I get another test at another place and what can I do, I hate pour in $3000 or more for new engine, runs fine except the check engine light appears.

360ci

YES. get a second or third opinion before settling with the dealer on their vague diagnosis.

Does the vehicle consume any fluids (coolant, engine oil in particular)? If not, then try changing the fuel injector in the cylinder with the misfire with another injector. If the code comes up with the cylinder that you changed the fuel injector over to, then you know that that is the culprit. A tune up might also solve the problem here as a fouled spark plug, or one that is gaped incorrectly can wreak havoc on some of todays more modern electronic systems. One more thing, get the compression checked. If the compression is at or over 100psi in all cylinders then you can rule out a bad piston and you shouldn't have to spend $3K or more for a new engine.

__________________
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!