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92 silverado k1500 running funny??

Well first forum have been too that no one tried to give some info. Are you getting a check engine light? Sounds like iacv , maybe fuel filter . Iacv is on the throttle body back side looks like a big nut ..with wires. Can take it out and clen . Do not touch the pintle on the end.
- loosebearing a nut
- Post #2
- Apr 21, 2012
- Forum: Engine Performance + Maintenance
L
help me build my 350 tbi

First thing do not leave stock bore if you want hp.
- loosebearing a nut
- Post #2
- Apr 13, 2012
- Forum: Engine Performance + Maintenance
L
93, 4.3L Upgrades!

Not much you can gain. wear that engine out get you a 5.7 ,or maybe build you a 383 stroker in that line.
- loosebearing a nut
- Post #2
- Apr 13, 2012
- Forum: Engine Performance + Maintenance
L
code 22 TPS has been replaced

Check reference voltage at tps 5 volts also check the ground . Can check with key on also .65 volts at idle 4.50 volts at wot./wide open throttle. What it sounds like vacuum leak. Not trying to be smart but a tb spacer is a waste ...your throttle plate maybe sticking on the spacer Hence high...
- loosebearing a nut
- Post #2
- Apr 12, 2012
- Forum: Engine Performance + Maintenance
L
Diagnostic help

Could be the cts/ coolant temp sensor located beside the thermostat housing , or vacuum leak , fuel filter . Lean means not enough fuel. Could check fuel pressure 9 to 14 psi. 02 is working due to code lean. Cts cost 10 bucks get it out of the equation . Hope this helps you Djk555
- loosebearing a nut
- Post #2
- Apr 12, 2012
- Forum: Engine Performance + Maintenance
L
Engine miss fire

When going to closed loop ecm is sensing something is not right. Are you getting a service engine light? If so scan it. Maybe cts/coolant temp sensor located beside the thermostat housing. May need to clean the maf sensor. Maybe a vacuum leak . I could go on but will not ..take it to auto parts...
- loosebearing a nut
- Post #2
- Apr 12, 2012
- Forum: Engine Performance + Maintenance
L
Help my 4L60e won't shift out of second gear.

Sounds like it maybe in limp mode. Try disconnecting battery for 5 minutes or so. See if you get gears back . If so watch out don,t drive over 50 may drop out again. Is the speedo and or tach working good? Check fuses . Maybe vss can check voltage on it . Jack rear of truck up use jack stands...
- loosebearing a nut
- Post #2
- Apr 12, 2012
- Forum: Transmissions