20 Most Recent 1999 Chevrolet C1500 - Page 7 Questions & Answers

why not all spark plug wires, they dont last the life of any engine. and cap and rotor. finish the full 60,000 tuneup and dont skip parts. is this hard? stalls can be caused by many a thing the EFI works real hard to stop all stalls, and does so very well in 1996, (not now, due to throttle by wire BS) 96 cars are the best cars ever made, all of them. it has OBD2 scan tool support. making it 10x easier to fix. ever used a scan tool even a $9 fleabay tool works 100% on 19965 cars. Get one. Now we do stalls. (engine size stated so will use generic answers)

1. Lost 12vdc to the EFI system. (see scan tool go, NON COMM, at stall? and dash lights go dim or head lights go dim? ) easy this.
2. EGR valve stuck open (if you have one) is #1 cause of EFI stalls.
3. next is never doing a real 60k tuneup ever. so common we like to use crying towels. really. so sad to watch the pull gas tanks and pumps all for the lack of simple tuneup and simple tools.
4. Gross Misfiring, any mech can drive the car and hear it and feel it.
5. loss of fuel pressure. (bogs then stalls and no misfire shaking)
6. Gross flooding. (many causes, we look for black spark plug tips. and other scan tool tests. (fuel trim )
7. Ever scan it for DTCs at the stall?
8. Ever scan it ever? for any DTCs ever? of any kind?
9. serious engine problems, lost compression. (any cylinders or all)

there are tests for each one. we do engine first spark then fue after a real 60k tuneup and it stalls. still. no fuel can burn with no spark no spark can run a bad engine.

a chevy , toyota.? and no year, nor country sold, making any exact answer impossible. to a fault. wow, cool ride. v8 engine in a tiny toy body or dinky enigne pulling a 5000 lead chevy. ok, some cars , even same year it's and optional part. the FSM tells you where it is and how to replace it. if pressent many are changed buy removing glove box door. alldata.com, open chapter HVAC and read. it can only be in 1 place, mostly, and that is the heater A/C junction box point. just look there, and see it. what you have, can vary . no country stated. some export chevys, have export HVAC system. same at toyota in spades. japan toys, or usa built toys are DIFFERent in many ways. and HVAC is one.

Hi EDAGRDO,there are some pictures showing the oil filter location ,maybe can help you.

Buy a cheap toggle switch wire it in line on ignition wire under the dash mount it were it's not visible so only you know

should be 4 two pre convertor and two post conv.if they are faulty there should be codes set for each one but as a rule of thumb they should be replaced every 80-100 thousand miles depending on driving conditions.

Sounds like turn signal switch but check fuses first

Often that is a sign of a bad connection between the battery and the starter, or a ground. You might try using a jumper to the starter post to verify the problem.

Take off the negative battery cable for 10 minutes. While waiting for that make sure you have all the ground straps connected that go to the battery cable end and to the engine.

When you replaced the battery there is every chance that you have corrupted the CPU program. Use a code reader to reset the CPU and see if that fixes the problem

FIRST CHECK TRANSMISSION FLUID LEVEL.IF FLUID LEVEL IS GOOD. YOUR PROBLEM COULD BE THROTTLE CABLE IS BINDING OR OUT OF ADJUSTMENT.YOUR GOVERNOR IS DAMAGE OR MISSING PARTS.YOUR OIL PUMP PRESSURE REGULATOR VALVE OR TV BOOST VALVE STUCK OR DAMAGE NOW .IN THE VALVE BODY.STICKING LINE BIAS VALVE TV LIMIT VALVE MODULATED TV UPSHIFT OR DOWNSHIFT VALVES.OR A STICKING THROTTLE VALVE PLUNGER.STICKING OR STUCK 1 -2 2 -3 3 -4 THROTTLE VALVES OR PRESSURE REGULATOR VALVE.THE SPACER PLATE GASKETS DAMAGE.ALSO THE 2 -4 SERVO ASSEMBLY ACCUMULATOR DAMAGED.THE 2 - 4 BAND BURNED OR ANCHOR PIN NOT ENGAGED.

If its a gas engine its controlled by the engine computer.

I sounds like your power steering pump may be going out or low on fluid.

Sounds very much like a clutch problem