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Thread: tbi problem
04-12-2010, 10:06 PM #1
- Join Date
- Jan 2009
i have a 92 c1500 with 225000 on it and when i start it up the tach will jump and i can
hear it slightly miss out of the tail pipe until it warms up i put a new distributor, plugs wires
and cap a year and a half ago and this has started about 3 months ago. just wondering
if anyone has seen something like this before.
04-13-2010, 06:56 AM #2
Several easy things to do before spending a lot of money...
- Check Distributer Cap for cracks or excessive wear, carbon on contacts, cheap to replace
- Remove spark plugs, clean and re-gap
- Remove IAC from TBI and clean with TBI cleaner
- Remove TBI and clean with TBI, clean off all of the carbon
-- with the TBI off, inspect the Intake, clean out any build up
- Check timing, disconnect the distributer from the computer, set to 0 degrees
After these items are addressed give the truck a good test drive. If there is no improvement in performance, the next thing to have checked is the Catylitic converter. Probably time for a new one.
Also look over the Cylinder heads, they may be cracked.
Let us know how things turn out.Pavement sucks... :grrrrrr:
1994 K1500 4x4 Ext. Cab
PCM chip and Xenon 8000k bulbs
350cu.in bored over .050"
balanced Crank, 10:1 compression
Flat top pistons,cam,ported heads
Option Racing Cold Air Intake
Holley Throttle Body Spacer
Accell Igition, 45kv coil
FloTech Headers, no CATs, dual exhuast
Goodyear Silent Armor A/T 305/70-16
Pioneer SupertunerIII CD USB Bluetooth
Kicker ZX200.2 ZX Amp
Kicker Audio COMP 10" Subwoofer
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