I recently replaced the computer in my 2002 Toyota 4-runner. Now my car is again misfiring and my mechanic says one of the cylinders is shot. Is this something they could've found when my spark plugs were also replaced?
In diagnosing the computer problem, my mechanic went over my car
thoroughly before diagnosing the computer malfunction. Shouldn't he have
noticed a faulty cylinder?
If your computer was malfunctioning then your mechanic may not have been able to detect the misfire. What exactly do you mean by a faulty cylinder?
Really... a shot cylinder can mean sooooo many things
Yes, you're mechanic should have seen the misfire by the condition of the spark plug(s) of the effected cylinder(s). In the old days that was called "reading the plugs". A misfire can also be detected at the tailpipe. A steady exhaust stream indicates that all cylinders are firing normally. But a " putt-putt-putt" at the tailpipe is an indication that the engine is misfiring. HTH. -Jim
Hi back at ya FoR and Jim
Hi Fordnut! -Jim
Looking for a Used 4Runner in your area?
CarGurus has 29,181 nationwide 4Runner listings starting at $1,500.
Search Toyota 4Runner Questions
Toyota 4Runner Experts