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  1. S

    Dash Upgrade

    What does the DRAC look like? I've got a full dash out of a 96/97 Suburban, including it's heater box. So I can not have to rewire the HVAC. Just replace the heater box and dash that go together. I got a guage cluster out of a 96 Tahoe that I wanna use. So I need the DRAC to convert my ECU...
  2. S

    96 Vortec kicking my ass

    So it runs. It has a rough-ish idle. Not horrible but just a little too rough. I'm having a hard time figuring it out why. Anyways to clarify the fix for the origional problem: I wasn't getting spark, bad wire form the ECU to the ICM. Fixed that. Had spark FROM the coil to the dizzy, as tested...
  3. S

    96 Vortec kicking my ass

    That's VATS ajd your cluster will have a light thay says "security". It disavkes fuelingnafter a few seconds of running. Works with a resistor in the key. The passlock module looks for the right resistance and then provides the ecu with a signal that its good to keep fuelling the motor. Good...
  4. S

    96 Vortec kicking my ass

    Like unit. after that PCM was installed it ran for 15 minutes perfectly then shut off as if key was turned off. Compression is fine. Should have mentioned that. Jumped timing is theoretically possible but I think unlikely. Especially as I today I double checked static timing and balancer sits...
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    96 Vortec kicking my ass

    I got a 96 Vortec that I got with a no spark issue. How hard could it be right? Guy b4 me had done the ecu, it ran 15 minutes then died. never fired since. I've done: New CKPS Fixed broken wire to ICM New ICM New Coil Verified ALL valves being operated AND that initial mechanical timing is...
  6. S

    Dash Upgrade

    Rock, Thanks for the offer. I'll take you up on it. In the meantime I've gotten myself a complete heatercore/ac box from a newer donor including harness to bypass the wiring issues. Maybe you can help me with getting the power locks working and the speedo. My donor dash is a 98 Suburban. What's...
  7. S

    Another pre 88-94 to 95-98 interior swap

    I have a lot of questions about swapping a 95+ interior in my 88-94 truck. I have a ext. cab 1990. that came with factory power windows and power locks. I'm having a hell of a time getting the door wiring done. I've got the inner door skins in. The dash will go in smoothly. All the physical...
  8. S

    Dash Upgrade

    in a similar boat as steven. color coding not making much sense. however I'm getting there. What is very frustrating is that after reading through over 50 pages of various forums and the supposed big one on FSC is that I can't find ANYTHING ANYWHERE actually documenting the HVAC swap from 88-94...
  9. S

    High rough idle, tried the usual...

    Good call, although I'll order a gasket first. Also check the TPS, I believe it's .54v up to 5v max just about. I do have a haynes somewhere I think... I have two spares. Do the throttle blade shafts wear out on these things like carbs? I could imagine they do. I would like to do the ultimate...
  10. S

    High rough idle, tried the usual...

    Hello all, Vehicle: 1990 c1500 with a 350 tbi/700r4 Problem: High idle at cold start (around 2000RPM) High idle when warmed up (around 900-1100rpm) Slightly rough idle when warm. Performance otherwise fine, no stumbling off idle or missing under load or revving in neutral. Drives great...
  11. S

    What kind of mileage do you get?

    I did a 250 mile round trip before the weekend. '90 ext. cab 350/700r4 with working lockup. 3.73's open and 31's Runs fine, didn't see better than 11mpg but I was running an average of 75mph Reading these I guess I should slow down if I want good mileage!
  12. S

    Low operating temp?

    Did you test the fan clutch cold or hot? Obviously hot it won't be easy to move.... Mine runs too cool as wel. But I don't trust the gauges as my voltage also reads 10-11v while at the battery I've got 14.3v. I'd go the route of re-doing grounds and adding an extra one. Electrics are always...

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