Top 20 1999 Chevrolet S-10 Pickup Questions & Answers

sounds like your fuel pump is going out. Next time it happens remove fuel cap and have someone turn ignition to the on position not crank. You should hear the fuel pump run for 2-4 second. If you don't hear it come on then try beating your gas tank hard with a rubber mallet while Ignition is in on position.listen for fuel pump to come on. If it starts after this then fuel pump it ?s.

I think on the 1999 V6 the firing order is 1-6-5-4-3-2. Stand with the engine pulleys and belts nearest to you. The cylinders are number as Odd and Even. The LEFT side is the EVEN numbers, (2-4-6). Number Two is nearest to you and Number 6 is furthest away from you. The RIGHT side is the ODD numbers, (1-3-5). Number One is nearest to you and number Five is furthest away from you.

Does the vehicle behave differently when driving? Thumps when hitting pot holes or bounces more than usual. Park the vehicle on level ground and with a good bright torch take a very good look at the suspension on both sides. This lets you compare one side with the other. You'll need to examine the suspension for obvious damage. Try the method below. If the spring and shock look OK it could be the suspension has a 'soft' spring or a faulty damper on one side. You are looking for broken or missing pieces. The spring should also look symmetrical. Check the mounting points front and rear especially the rear swinging mount. Chock the wheels, (front AND rear of one wheel), and get someone to bounce up and down in the back of the vehicle. Without getting under the vehicle watch the springs and mounts move. It should be the same both sides.

Headlamp relay problem , contacts stuck closed , You say your truck doesn't have DRL ?

Doesn't have EGR valve . How many miles on the truck ? What Causes High NO (NOx)? Nitrogen Oxide or NO is created when an engine's combustion chamber temperature reaches over 2500F. Vehicle manufacturers have designed several systems, which when working properly, lower nitric oxide emissions. Below are common failures which may cause your car, truck, van, suv, or motorhome to produce high high nitric oxide. 1. Lean Fuel Mixture - Lean fuel mixtures cause high NOx. A lean fuel mixture exists when less fuel then required is delivered to the combustion chambers or when more air then necessary is added to the fuel. In either case the lack of gasoline needed to cool the combustion chambers down is not present. Combustion temperatures increase causing high nitric oxide emissions. A lean fuel condition may be due to a vacuum leak/s and/or defective fuel control components, such as the Air Flow Meter, Engine Coolant Temperature Sensor, and O2 sensors. Read about Oxygen Sensor. 2. Defective EGR System- The Exhaust Gas Recirculation system is designed to reduce NO. The EGR system consists of an EGR valve, EGR pressure sensor, vacuum hoses, and one or more vacuum switching valves or solenoids. Later model vehicles may be equipped with electronically controlled EGR valves, which do not require vacuum lines or switching solenoids. Electronic EGR systems will have these components built in. The EGR system's job is to re-route a small amount of exhaust gas back into the intake manifold to help reduce combustion chamber temperatures. As mentioned above NOx is created when combustion chamber temperatures reach above 2500F. By recirculating exhaust gas back into the intake, a small amount of the air/fuel mixture is replaced with inert gas, reducing combustion temperatures. Read about EGR System. Regular Smog Check STAR Smog Station Smog Check Repair Mile: 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 30 Which Type Should I Choose? > " name="submit" style="font-size: 16px; font-weight: bold; border-radius: 0px; border-width: 0px; border-style: solid; border-color: rgb(51, 127, 237); padding: 2px 10px; background: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(0.05, rgb(61, 148, 246)), to(rgb(30, 98, 208))) rgb(61, 148, 246); color: rgb(255, 255, 255); min-width: 195px; min-height: 30px; text-shadow: rgb(21, 112, 205) 0px 0px 0px; box-shadow: rgb(151, 196, 254) 1px 1px 0px 0px;"> Related Links:

• Failed High HC Emissions
• Failed High CO Emissions
• Failed High NO Emissions

3. Defective Catalytic Converter (CAT) Some vehicle manufactures have designed their cars to operate without EGR valves. Non-EGR equipped vehicles rely heavily on the Catalytic Converter to assist in the reduction of NO. These vehicles have tendencies to develop CAT problems sooner then those which are equipped. If you own a non-EGR equipped vehicle, and have failed the emissions test for high NOx, pay close attention to the Catalytic Converter. Read about Catalytic Converter 4. High Engine Mileage - Over an engine's lifetime, carbon build-up develops in the engine's combustion chambers. The more miles on your engine, the more carbon build-up on the pistons, cylinder heads and valves. Carbon build-up decreases the available space for the air/fuel mixture to combust, and causes higher cylinder compression. High compression results in high temperatures and high NOx. Keep in mind this problem is usually seen in vehicles with over 150,000 miles which have been poorly maintained. The solution to this problem is called De-Carbonizing. It usually costs around two labor hours at a smog check repair station. It will remove a good amount of carbon out of an engine. This will increase combustion space, lower compression and lower NOx. 5. Engine Overheating - Inadequate engine cooling can will high NOx. If your vehicle's cooling system is not working efficiently, (i.e. bad radiator, thermostat, hoses) high NOx will be created. Remember high NOx nitric oxide is created when an engine's combustion chamber temperatures reach over 2500F. You will want to make sure your vehicle's cooling system is working properly, and your vehicle's temperature gauge is always indicating normal.

Fuel Filter?

Turn the Key on do you hear the Gas pump Yes or no?? If No Check the relay under the hood for fuel pump and check fuses for fuel.. However if you added an alarm system to the truck that might be a problem,. They use in line fuses to stop the fuel and they some times pop.. Good luck

Is the security light flashing? If so, you 've got trouble codes stored and it's probably the anti theft system

Open the bell. Take off the rear gear cover. U will loose all the fluid if any still in it so only remove some of the bolts loosen leave like 3 in around the bottom loosen them out a oil pan under the cover pry the cover off the diff leaving the 3 bolts to keep the cover from just popping off it will also help slow the rush of fluid. Once the fluid is drained remove the bolts and cover. On the inside u will se side gears. Have a helper push the axle shaft inward then u will see there is a C clip holding the axle carfully pry off the clip. Only do one side at a time. ... Then slide the shaft out where ur helper is. .. remove and replace the leaking seal. Then clean the axle. And u have to be easy sliding it in. Some times when the axle shaft is slide in u hit the end of the tube push the axle down toward the ground with variety of pressure as u push in this is tricky. But it will pop in. Then replace the clip and gentle have a helper try and pull back on the shaft. This sets the clip from falling out. Clean the bell area and scrap the old gasket off both sides if u have no replacement gasket get high heat black rtv silcone apply it to the cover or diff face and reverse the steps to install fill it with fluid and road test all this can be seen on youtube under inner axle seal repair. Good luck.

This is an after market radio so you might want to go back to square on and remove the radio. Put everything back and see if the issue is still there. If not you could have a bad radio that is cross circuit. .

It sounds like you've already gained access to the fuel pump if you have no power there. Do you have a good ground at the pump?

General Description The front suspension allows each wheel to compensate for changes in the road surface without affecting the opposite wheel. Each wheel independently connects to the frame with a steering knuckle, ball joint assemblies, and upper and lower control arms. The control arms specifically allow the steering knuckles to move in a three-dimensional arc. Two tie rods connect to steering arms on the knuckles and an intermediate rod. These operate the front wheels. The two-wheel drive vehicles have coil chassis springs. These springs are mounted between the spring housings on the frame and the lower control arms. Double, direct acting shock absorbers are inside the coil springs. The coil springs attach to the lower control arms and offer ride control. The upper part of each shock absorber extends through the upper control arm frame bracket. This bracket has two grommets, two grommet retainers, and a nut. A spring stabilizer shaft controls the side roll of the front suspension. This shaft is mounted in rubber bushings that are held by brackets to the frame side rails. The ends of the stabilizer shaft connect to the lower control arms with link bolts. Rubber grommets isolate these link bolts. Rubber bushings attach the upper control arm to a cross shaft. Frame brackets bolt the cross shaft. A ball joint assembly is riveted to the outer end of the upper control arm. A rubber spring in the control arm assures that the ball seats properly in the socket. A castellated nut and a cotter pin join the steering knuckle to the upper ball joint. The inner ends of the lower control arm have pressed-in bushings. The bolts pass through the bushings and join the arm to the frame. The lower ball joint assembly is a press fit in the lower control arm and attaches to the steering knuckle with a castellated nut and a cotter pin. Ball socket assemblies have rubber grease seals. These seals prevent entry of moisture and dirt and damage to the bearing surfaces. Four-wheel drive models have a front suspension that consists of the control arms, a stabilizer bar, a shock absorber, and right and left torsion bars. The torsion bars replace the conventional coil springs. The lower control arm attaches to the front end of the torsion bar. The rear end of the torsion bar mounts on an adjustable arm at the crossmember. This arm adjustment controls the vehicle trim height. Two-wheel drive vehicles have tapered roller sheel bearings. These bearings are adjustible and need lubrication. Four-wheel drive models and RWD Utilities have sealed front-wheel bearings. These bearings are pre-adjusted and need no lubrication. Heat treatment may create darkened areas on the bearing assembly. This discoloration does not signal a need for replacement. Hope this helps?

You need to watch the clutch slave cylinder while someone pushes in the clutch .... is the arm coming out ? If it is check that it is tight up against the arm. It doesn't take much movement to engage the clutch but if there is slack it won't work.

sounds like cellinoid is bad or the starter drive is not engaging could need new starter

You need to slide under the truck and adjust the length of the rod on the clutch actuator cylinder

It should have worked from the cigarette lighter. Strange ... You do have your strip light polarity correct, I guess? Is the strip working? Temporarily hook it up to your battery to check.

Rather then just thinking the fuel pump is the trouble ,test ! Fuel pressure and flow testing . electrical circuit testing , voltage drop testing . Test don't guess ! What engine does it have 4.3 vortex engine with Central Sequential Duel Injection Fuel System ? Testing Electric Fuel Pump Problems with Voltage Drop Test If the fuel gauge wasn't showing the correct level you replace the sending unit , not the fuel pump . Two different thing's 048 Engine Hard to Start or No Start Scan Data for Starting Problems Fuel psi less than 50 psi no start GM CPI Vortec

there is no ground relay box as the ground wires are connected back to the engine, frame or battery disconnect the fog lights and insulate the wires check /replace the light control module

Do you have an ABS light on? If so your ABS sensor maybe this could bear some of the blame.If you are looking to disable the passlock system this will show you how do do it and what you will need. How To Permanently Disable GM PassLock System good luck and i hope this helped.

Air is getting into the system. Tighten all hoses and do not overlook the hose going to the expansion tank. When car cools that hose sucks water back into system but if not tight it will suck in air. Could be why you constantly have to "burp" the system.