Why does my 1990 Chevy Silverado not start?

My 90 would not start if the vacuum line to the MAP sensor was disconnected. The MAP is located behind the TBI. Be sure the vacuum hose is in good shape. Mine has to be replaced as the glue no longer worked and it leaked. If you have a vacuum pump, make sure the MAP can hold a vacuum or it needs to be replaced.

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

What causes hesitation and stumbling in a 1990 Chevy c1500?

An expert that got 10 achievements. Re: 1990 chevy c1500 hesitation and stumbling during… Based on what you said, I would say the engine is starving for fuel. The computer has to be disabled to set timing – there should be a procedure for that. I would start with checking fuel pressure at the throttle body.

Why does my Chevy c1500 not start up?

SOURCE: No fuel to the injectors on a 1997 Chevy c1500. can be the distributor or maybe the fuel pump let the truck sit and then turn key almost on but not enough to initiate start up and see if you hear pump in the gas tank and if thats not it, it could very well be your distributor it might be moist in the cap or button area

What kind of car is a 1990 Chevy Silverado?

OK, so I bought a 1990 Chevy Silverado with a 5.7L (350) TBI off Craigslist. I knew I’d have to do a lot to get it into shape, but now its kicking my behind.

What to do if your Vortec won’t start?

96 Chevy C1500 5.7L Vortec Truck won’t start, Replaced Fuel Pump, Filter & Has Spark. Hey everyone, I have a 1996 Chevy C1500 with a 5.7L Vortec, I got the truck recently and was told it just needed a Fuel pump, I replaced the Fuel pump, and the Filter, also the pump turns on and there is fuel up at the rail, I pushed the pin and it shot right out.

Why does my Chevy Silverado not accelerate when I push the gas?

If your Chevy Silverado won’t accelerate, that is a serious cause for concern. There are a lot of different reasons that can cause this. Diagnosing the issue can be narrowed down by whether the engine is still revving when you push the gas or not. There is a section for each scenario with likely causes for each.

How can you tell if your Chevy Silverado fuel pump is going out?

The only way that you are going to know that your Silverado’s fuel pump is going out is that it is no longer providing enough fuel pressure to keep the engine running under a heavy load, or at high-speed. Typically, if you are heading up a hill (or accelerating) the engine may start to feel like it is just running out of steam.

What causes a Chevy Silverado to not start?

There are really two main ways that a vehicle will not start. The first and most common is when it won’t turn over. This just means that the engine doesn’t move when you turn the key. The second way that your Silverado won’t start is when the engine turns when you engage the starter, but it won’t fire and run on its own.

Why does my GM 4.3L engine not start?

No Start Condition Basics There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it’s because one of these components is missing from the mix.

Why does my car not start when I start it?

There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start…it’s because one of these components is missing from the mix.

Why does my Chevy 350 backfire when I accelerate?

If you hear a pop sound under the hood when you accelerate it is most likely running lean (Not enough fuel) from either a vacuum leak or the fuel pump failing (low fuel pressure). The 90 degree elbow in the PCV Valve hose at the base of the throttle body to the PCV valve is common to either fall off or have a hole in it.

Is there a problem with my Chevy Silverado?

Will turn key and it is like no power from battery to starter, but have lights, radio, etc. Turn key again or sometimes multiple times, to no avail. Then, turn it one more time and it starts. Then the next 15 starts, no problem. Sometimes hot engine, sometimes cold. UPDATE: 2-6-14; I sold the truck to my father. He changed the starter.

What does it mean when your car won’t start?

An intermittent no-start condition references any time where starting is possible sometimes, and other times the engine will not start. This implies that the difference between starting and failure to start is not understood.

Why does my Chevy Silverado run out of fuel?

Another common reason that your Silverado may be starving for fuel is a bad fuel pump. The fuel pump is responsible for sending highly pressurized fuel to the fuel rails. The engine can die if the fuel pressure is not high enough to properly atomize the gasoline properly.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

OK, so I bought a 1990 Chevy Silverado with a 5.7L (350) TBI off Craigslist. I knew I’d have to do a lot to get it into shape, but now its kicking my behind.

What was the problem with my 1990 Chevy k1500?

My old 1990 K1500 had the same stalling problems until I changed the EGR valve. We have a 1990 2wd 350 tbi with similar issues. So far it has a new distributor (for an unrelated problem), idle valve, throttle position sensor, knock sensor, temperature sensor, fuel filter, plugs & wires.

What causes a Chevy C / K to stop running?

A leaky fuel pump will drain the line up to the carb, but about 15 seconds of cranking will fill the line again. 2. A sticking mechanical choke or a bad electric choke. Try; when you return to your truck from the Quicky Mart, put the accelerator slowly all the way to the floor, let your foot up slowly and then crank the engine.

What makes a 1998 GMC C2500 no start?

1998 GMC C1500, C2500, C3500 Pick Up. 1998 GMC K1500, K2500, K3500 Pick Up. All of the information you need to diagnose a misfire or a no-start problem (caused by the ignition coil, the ignition module, or the crankshaft position sensor).

What kind of car is 1998 Chevy k1500?

The illustrations in the diagnostic manual are printer friendly! Applies to: 1998 Chevrolet C1500, C2500, C3500 Pick Up. 1998 Chevrolet K1500, K2500, K3500 Pick Up. 1998 GMC C1500, C2500, C3500 Pick Up. 1998 GMC K1500, K2500, K3500 Pick Up.

What was the ignition module for a 1996 GMC k1500?

1996 GMC K1500, K2500, K3500 Pick Up. All of the information you need to diagnose a misfire or a no-start problem (caused by the ignition coil, the ignition module, or the crankshaft position sensor). Wiring diagrams.

Why does my Chevy k1500 have no spark?

Pulled off the road and after a couple attempts it started back up. Got about 5-6 more miles and it shut off on me again and died. Has not started since. Tested spark at plugs and coil no spark. So far Replaced ICM. Ignition Coil. Cap and Rotor. Still not starting up. When I turn the key on engine light blinks once at the beginning and stays solid.

What’s the oil pressure on a 1991 Chevrolet C1500?

Youâ€™re welcome. Hey pushrod, my oil pressure gauge is fluctuating after engine warms up. Itâ€™s 4.3 in a c1500 with a manual trans. Itâ€™s got new idle air valve, CO2 sensor, fuel filter, and coil.

What was the problem with my Chevy c1500?

Thanks Itâ€™s also got the new cap and rotor lol Replace oil pressure switch – (sending unit). You are the f***in man pushrod. The oil pressure switch was the problem. Thank you for sharing your knowledge and experience. you did change the ignition control module.cranks over but no start,correct.

What kind of Chevy truck has no spark?

I have a 93 K1500 TBI 350 and it has no spark at all. I’ve checked the module, checked the pickup coil, checked the coil itself and can’t figure it out.

What causes a car to have a no start condition?

The engine pistons and valves (and all the other related components like: timing chains, etc.) are the ones responsible for the induction of the fresh air the engine needs for the combustion process. Although rare, internal engine mechanical problems can and do cause no-start conditions. Blown head gasket. Blown engine. 4.)

What to look for when your engine won’t start?

Check for a blown fuse that may be preventing a circuit from working properly, like the fuel injection or computer system. To operate efficiently, an internal combustion gasoline engine needs a good spark, the right amount of fuel, and good compression (a healthy mechanical condition).

What was the name of the 1990 Chevy pickup?

The Chevrolet 454 SS might not look spectacular or even interesting, but it certainly wowed audiences upon its release back in 1990. The truck, which is basically a 7.4-liter V8 stuffed in a 15000 chassis Chevy pickup, is one of the most iconic pickups to date and is often spoken with high regard.

What was the most popular truck in the 90s?

However, the most popular version of the F-Series is the F-150, which is now in its thirteenth generation. The F-150 sported some extreme adjustments upon its release in the mid-90s with the long-running 4.9L inline-6 engine replaced by a V6 its biggest change.

What was the name of the Dodge truck in the 90s?

The Ram pickup, also known as the Dodge Ram, is a full-size beast of a pickup truck and a favorite among truck fans. In fact, the Ram is so well-liked that it was named Motor Trend Magazine’s Truck of the Year a whopping five times. However, it was the 90s where the Ram really came to life with the Ram line undergoing a humungous redesign.

Why does my 1990 Chevy Silverado not start?