96 6.5 problems

[mschillingii]

ok so im getting some codes and truck runs fine sometimes and others like a crap please tell me what i need to replace

p1218
p0236
p0722
p1214
p0118

thanks for any help

[1993-Sierra-Z71]

p1218: I understand this deals with the "injection pump timing calibration circuit". my bud says " The only time I had that code appear was when I ran without a resistor in my PMD. " which tells me that It should be the resistor. Have you recently changed or relocated the PMD/FSD? The code is telling you it is not there,but the truck should run fine without it. It will just run like you had a #1 resistor in it.

p0236: Faulty MAP Sensor.

po722: Output Speed Sensor No Signal

p1214: injection pump timing offset,

p0118: Engine Coolant Temp. Sensor Circuit - High Input

hope this helps!!! you can use this as a reference!
http://www.dieselspecialists.net/simplemachine/6-5-trouble-codes/chevy-6-5-turbo-diagnostic-trouble-code-list!/

[LeoP]

map sensor failure is common, check to make sure it bolted tightly to the manifold and plugged in.

[mschillingii]

so i looked in my new pmd and no resistor so i ordered #9 i got a new temp sensor but am going to pull boost gauge sensor and try to clean it