Tech Tips

The National Automotive Service Task Force (NASTF) recently distributed a Technical Service Bulletin (TSB) from DaimlerChrysler (DCX) regarding oil filter applications for the 2.4L engines. TSB 09-011-04 describes the proper oil filter usage for the two different 2.4L engines found on 2001 to 2005 Sebring and Stratus vehicles.

According to DCX, it is critical to use the correct oil filter to prevent engine damage when performing scheduled maintenance. There are two different 2.4L engines that have been used from model years 2001 through 2005. One 2.4L engine (DOHC) manufactured by DCX is used in the Sebring Convertible, Sebring Sedan and Stratus Sedan. The second 2.4L engine (SOHC) is manufactured by Mitsubishi Motors Corp. (MMC). 

DCX has learned that the MMC oil filter can be incorrectly installed on a DCX-built 2.4L engine. Use of the MMC oil filter on the DCX-built 2.4L engine will result in engine damage due to oil loss. Service personnel should refer to the chart below: 

Dear Richard, 
I enjoyed your article about the '91 Ford F150 PCM (March 2004, page 20). I have a couple of questions about the EEC IV. 

On a 1987 speed density version, I understand the PCM uses manifold vacuum, throttle position, O2 and engine temperature along with stored fixed values to manage engine performance. With 110k miles, my idle vacuum reads about 19 inches. 

How much lower could that new camshaft vacuum take the MAP signal without freaking out the PCM? Would an aftermarket PCM with different fixed values (volumetric efficiency) allow me to gain a little performance? 

I am trying to avoid going to a MAF system, which would allow me more flexibility, but would mean a complete changeover. 
Any comments are appreciated.

Wayne Williamson, via e-mail

Dear Wayne,
You can't cam it up very much at all without experiencing some pretty serious rich idle concerns. A friend of mine ?cammed? up a Mustang engine (EEC IV) and dropped it in an old Bronco. 

I had to do the $500 MAF conversion on that one, which came with a PCM, a harness modification, a MAF sensor and a neat little box with an LED display wired in with the MAF that would allow adjustments with a plain old screwdriver to optimize idle quality. Pricey, but the Bronco ran like a dream after I installed it.