e99 or 99.5 motor?

[steven91]

bought my first diesel off my dad, its a early 99 7.3 by the manufacturer date, but my dad told me that the motor had been replaced before he purchased it. How can I tell if the motor is a early or late motor?

EDIT, i know there are some differences in the turbo and intake but wondering if there as any model numbers on the valve covers or turbo that i could look for

[bjs505]

Check the PCM code. If it's a xle code chances are its an early 99 motor. The PCM is located on the firewall by the emergency brake pedal.

[steven91]

well just went out and checked on the drive side valve cover, 23 feb 99 so i would assume that this is a 99.5 motor? the driver door says 06/98 also the intake comes from the front of the grill. note i do not have a cruise light, ill check the PCM code

[steven91]

getting dark out, but went and looked and didnt see a sticker on the side of the pcm, guess id have to unscrew it and look around on it for the code

[steven91]

ive got a edge evolution program on it (80hp) if this is the 99.5 motor would replacing the pcm help with performance/millage and is there anything else i should look for? trans cooler?

[bjs505]

There is a thread dedicated to the e99. This will answer most of your questions.

[deeker]

You have the good forged rod motor. They didn't come out with the 99.5's until 12/98. Also the engine serial # is under 142xxxx i beieve.