GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 4 of 4
  1. #1

    Default 95 gmc jimmy starting issues

    95 jimmy wont start in morning I spray it once with break cleaner and fires right up and runs great til sits for more than 3 hours have changed spyder injector,distributor,iac,coolant temp sensor does anyone have an idea what is causing this?

  2. #2

    Default

    Quote Originally Posted by mbreier View Post
    95 jimmy wont start in morning I spray it once with break cleaner and fires right up
    What are you spraying with brake cleaner?
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  3. #3

  4. #4

    Default

    Quote Originally Posted by mbreier View Post
    95 jimmy wont start in morning I spray it once with break cleaner and fires right up and runs great til sits for more than 3 hours have changed spyder injector,distributor,iac,coolant temp sensor does anyone have an idea what is causing this?
    Im actually surprised it starts with brake cleaner but It could be a fuel pump... Check the pressure with a rented tool(actually its free after returning it)from autozone.. From my research on a 98 and 99 I had done it requires more pressure to start the 4.3 liters than to keep it running.. I had the same issue with the 99 I had.. sometimes I would cylce the key a couple times and it would finally start and would run fine and start fine until it sat for a few hours then It wouldnt. Heres one thing to try but not a gaurentee.. Even though your battery is fine(or can even be brand new for that matter) when it doesnt start.. hook up a set of jumper cables to it from another vehicle and see if it starts.. this might sound crazy but I did this with my 99 several times whenever it wouldnt start. the extra power from the other vehicle running allowed the weak fuel pump to get a little more amperage to get the pressure needed to start.. I read that it requires 63 psi to start and around 50-55 to stay running. Again this was on the 98 and 99 I had so im not sure if its the same as the 95.. Anyways Ive had fuel pumps that have minds of their own so this is something to look at. Good luck..




    2011 Silverado CrewCab 5.3L*Ram Air Look Cowl Induction Reflexxion Hood*6" Pro Comp Lift*Flowmaster Dual exhaust*Perfect Launch Rear Diff. Cover*Led Smoke Taillights*L.E.D.Smoke 3rd Brakelight*60" L.E.D. Tailgate Bar*Rearview Mirror Reverse Camera and Sensors*Smoke Headlight Covers*Front Bumper Grill Insert*Deezee Black Alum. Diamond Rail covers*20" Ultra Motorsports Rims wrapped with 35.5"B.F. Goodrich Tires*Inchannel Raingaurds*CAI*Bullydog GT Tuner*Alpine Amp*Boss 6x9's*Boston Acoustic Subs*Terrantula Tweeters*Custom Sub box*Red Led Interior Accents*5% Ultimacool duo tint rear window and doors, 20% front doors*Custom Vinyl Graphics*Demolded*Debadged*Painted drums and calipers*
    Future Mods Include: Custom Interior Hydrographics, Electronic Rollup Toneau Cover, 4.56 Gears, Painted rear bumper

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •