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  1. name

    1995 5.7 TBI at cold idle...Does this look normal to you?

    looks like mine, but I am trying to run down a miss at idle when warm so I am not sure if it is correct or not .
  2. name

    MAP sensor line? Unsure where it goes

    On my '94 the MAP is plugged into the port in the back of the TBI . But your mounting bracket looks different than mine so I am not 100% sure if GM made a change on your truck. what year is your vehicle and is it a 5.7 ?
  3. name

    02 sensor

    I have a 1994 K1500 5.7 TBI with the 4L60E that is all stock with a 3 wire o2 sensor. it plugs into the stock wiring harness that runs down on the passanger side of the tranny. When I got the part from Napa, they asked what tranny it had in it, apparently GM used two different types of o2...
  4. name

    98 Chevy k1500 350, low oil pressure and misfire.

    A 159k is not a lot of miles and when you see low oil pressure like this it could be something as simple as a week bypass spring in the pump , so don't be discouraged thinking you need a whole new engine. Does your truck have an oil cooler ?
  5. name

    1994 k1500 wild misfire

    I stuffed two rags down there when sanding, then hosed it down with brake cleaner, then pulled the rags out and hosed it down again. They are the same, I even threw the old IAC back in there because it had a wear mark on one spot of the pintel and I thought it would make the difference, But it...
  6. name

    1994 k1500 wild misfire

    I can only assume so , It does change idle speed from being cold and being warmed up
  7. name

    1994 k1500 wild misfire

    For those of you following this thread : 1) I re set the IAC as described in the service manual = no effect on misfire at idle 2) I installed a new bosh o2 sensor = no effect on misfire at idle 3) I replaced the TBI gasket = Limited effect on misfire at idle. I decided to pull the...
  8. name

    Ignition coil/ overheating

    What scan tool do you guys recommend , I am thinking on getting one but do not know anything about them .
  9. name

    Ignition coil/ overheating

    I also have a wire like that taped up on my '94 5.7, but it is on the drivers side. It has a plastic conecter and I just figured it was for plugging an aftermarket tach or dome diagnosis equipment .
  10. name

    98 Chevy k1500 350, low oil pressure and misfire.

    Make sure the truck is putting out enough volts, low voltage may make the gages read low & and give you a weak spark.
  11. name

    AC issue, loud metallic smashing.

    If you have one of them " pancake compressors " they are prone to make noise, Mine makes a hell of a racket ( kinda like a hammering / crackling sound ) when the clutch is engaged. At first I just replaced the clutch But it made no difference, so I put on a brand new one from 4 seasons and it...
  12. name

    1994 k1500 wild misfire

    MAP Remove MAP sensor, hose down with electrical contact cleaner including the port , let dry and reinstall I used carb cleaner in the beginning but it had no effect, then I read a post saying it was not good to use carb cleaner on the sensors, decided to re do the work with electrical...
  13. name

    1994 k1500 wild misfire

    Well I got to summit racing, got some parts, the condition is still there : 1) Replaced cap and rotor with the ones that came with the new aftermarket distributor I mentioned earlier = No effect on misfire at idle . 2) Replaced wires with summit brand witch I had good luck with in the past...
  14. name

    1994 k1500 wild misfire

    Schurkey : SUM-868858 is the Summit wires I used last time, Looking at the speck sheets they appear to be made of the same material as the ones you posted. Looks like the only thing different between the two is the color and the cut to lenght option...
  15. name

    Cruise control fuse location

    When I have trouble with my cruise control and the fuse is good, I have found that either : 1) The brake switch under the dash is stuck on causing the cruise control to " turn off " ( usually hitting it with some wd-40 gets me going for a while ) 2) Some water has gotten in the control box...
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