Re: Stancor GPR took a dump
Billy I've had the exact same problem with my truck and it's driving me nuts! My truck is a late 97 and the gp's never cycled before. I too am running a larger alternator, not a 215 but a 190 which makes 130 amps at idle. I put that in beginning of last June and had zero problems until December. Thought it was my Stancor so got another but that did nothing. Tried my good stock relay same problem. Checked the wiring and gp's - tested everything but could not find any problems. I converted my uvch to the SD
style and at the same time put in a brand new spare set of gp's - still no luck. Tried a NAW4 pcm
from a 95 truck to see if it was my pcm
but again the gp's still cycle on/off. It's annoying as all hell esp as it had never done this at all.
Does yours do this all the time? Mine will on a cold start say 50° or colder. Above that the plugs stay on continuously for up to a minute or so, sometime only ~30sec and behave normally.
If the pcm
is protecting from too much voltage can a resistor be installed so the gp's never see more than something like 13 volts?
I'm trying to remember back when I installed, 1.5 years ago. I did not have any issues starting until the temps started to get warmer.
During the cold winter months, the motor would fire right up in the single digits without a hiccup. Once the temps began to get in the 50* range, i got extended crank times.
With the lower temps, the GPs
would cycle on/off, had that surge at idle. Now my chip(Beans/Jonathan tuning) has the SD
start up files on it. I would get an elevated idle (1000 rpm) automatically when it was cold. The elevated idle rpm would depend on the temp outside.
Now that the temps are warmer, I developed an extended crank. I waited a few seconds after the WTS turned off before cranking. It made no differrence.
Last night, I put a test light on the load side of the relay. After the motor started, it was steady for about a minute and it turned off. Now I don't know the condition of the internal contacts or if the GPs
are getting full power.
This is where I'm at now. This has me confused because it's harder to start in warmer temps. After the motor warms up to running temp, it starts right up.
'97 Black F250HD SC 3.55s, Punisher trans, PI Converter, Dana 60 RSK w/ V & C SD springs,
PIS 175/80s, HB Jr, Comp910s, Smith Bros PRs, ARPs, Fluidampr, IC, E-Fuel, CJC Traction blocks, HFHV IDM, T4/BASB, 262K
-1987 Buick Grand National (Staged)
-2004 Mercury Marauder
-1993 Geo Prizm (beater)
-2016 F350 DRW Utlimate