Originally Posted by
DmaxMaverick
Disconnecting the temp sender tells the PCM the ECT is -40. The GP's should cycle longer and the idle should increase.
Alternatives:
Disconnect/reconnect the temp sender for cold starts when it's 80F.
One of my favorite mods I did years ago: I installed a time-delay relay into the circuit of the temp coolant switch so that every time the engine starts, that circuit opens and fools the PCM into thinking the engine is stone cold. This allows for a fast and easy startup. A few moments after the engine is running, the relay closes, completing the circuit, and the engine returns to normal operating parameters. Works great for fast, easy starts.
Casey
1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter