Did you use an AC Delco cap & rotor? The life expectancy of an aftermarket cap & rotor is about 2 years, if you're real lucky.

A dead battery, (or disconnecting it) will not clear the DTC's, (Diagnostic Trouble Codes) from memory or reset the PCM, (Powertrain Control Module). It will turn the SES, (Service Engine Soon) light off only if there are no hard faults present.

The P0102 indicates a problem with the MAF, (Mass Air Flow) sensor or its circuits, however, it's probably not causing the no-start condition. Just a FYI: There are very few DTC's and OBDII related issues that will cause a no-start condition. It's usually something basic such as fuel delivery, ignition, or a mechanical problem inside the engine itself, ie timing chain etc.

 

Having the battery disconnected long enough would allow the capacitors in the pcm to discharge and it would revert back to factory settings. Correct?

 

No. When the PCM detects a fault, depending on the type of DTC, it can be stored in 3 different files: A pending file, a current file, and a history file. Disconnecting the battery, for any length of time, will only clear the pending & current files. DTC's in the history file are burned in. There are only two ways to remove DTC's from the history file: 1) If the fault is not detected for a given number of drive trips or a given number of drive cycles. Or, 2) They are cleared with a scan tool capable of clearing the history file.

There are several reasons for programming the PCM with this feature, here's one scenario: Lets say the engine stalls, a DTC is set, and the engine will not restart. The driver turns on the hazard flashers, (or leaves the headlamps on etc) calls a wrecker and leaves. Battery goes stone dead before the technician can retrieve the DTC's, (which happens a lot). Technician charges the battery and can then retrieve the DTC, along with freeze frame data, (snap shot of exactly what the engine was doing when the DTC was set and the engine stalled).

 

So your leaning towards the cap and rotor being the culprit?

 

Yes. At his point, knowing the track record of aftermarket caps & rotors, at two years old, if it hasn't failed yet, it will shortly. Install an AC Delco cap & rotor. Put a dab of silicone dielectric grease on each terminal, inside and out, of the cap.

Unfortunately, to check/diagnose the cap, rotor and wires, with 100% accuracy, it requires an oscilloscope.... not a common item for the DIYer to have considering they cost into the thousands of dollars. You can buy a lot of caps & rotors for that kind of money

 

well to my dissapointment today i changed the cap and rotor and still no change. It still wont fire unless you hold the throttle to the floor and and then dies as soon as it finally fires.

 

Is the battery fully charged? Is the engine turning over at normal speed? If so, remove both front oxygen sensors and try to start it. If it starts & runs, it will be noisy, but pay attention to how it runs.

 

no the battery is pretty dead from sitting so long and repeatedly trying to start it , i use my other truck to jump it...

 

Leave the jumper cables connected until the battery is fully charged before trying to start it.