Question about 1998 Chevrolet C1500

3 Answers

1998 chevy c15 5.7 SFI SYSTEM

Engine cranks over but wont start, can hear fuel pump and have with the key on 60to64psi on fuel pressure guage have spark from coil to dis. and to plugs and have tested ing. module (good) and new cam shaft postion sensor and new crankshaft postion sensor and new fuel pump relay. maybe 60,000 miles on GM reman. long block in pickup with maybe 150,000 plus miles on truck that ran fine driving to work all week until friday when parked then on monday wont start.also tried giving a shot of starter fluid thru filter housing while cranking engine overand it seemed to try to start but not.driving me crazy hope someone can help Thanks

Posted by on

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

My truck did this after I replaced the fuel pump. Turned out to Fuel Pressure Regulator. It would crank and crank but never start. It's located underneath the black plastic manifold on the side of the injectors.

Posted on Feb 19, 2010

Ad
  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 40 Answers

What is the outside temperature there? I have had very hard time starting my 98 chevy when temps are in the single or negative digits, especially after sitting. The battery just does not have enough cranking amps at those temps. The truck sounds like it cranks fine but when you watch the volt gauge on the dash it dips close to the red area while cranking. I have replaced my battery and my truck starts fine now. i still think I need to replace my battery cables. I would suggest cleaning cables and boosting the battery while trying to start. I know this sounds too simple but it is easy to try. The computer will not function with low voltage.

Posted on Feb 03, 2010

Testimonial: "Thanks for input, temps have been in the 30s&40s at this time and the battery was replaced about 4 weeks ago and the cables are good to go"

  • tmj2218 Feb 03, 2010

    Be sure to clean between the two postive cables at the post. I once replaced a starter only to find that the new one did not work. Then took the cables apart and found the culprit to be nasty white corrosion.

  • tmj2218 Feb 06, 2010

    How did the truck start and run before it quit? Did the engine come with upgraded MFI injectors? You can tell by looking down the throttle body. If you see plain black hard plastic fuel lines inside the plastic plenum, then these are the old style SFI. This system placed the injectors centrally in the plenum and has poppet valves on the ends of the fuel hoses to spray fuel into each cylinder. These have a tendancy to leak or stick closed. This can either flood the cylinders or cut off fuel in the case of a stuck poppet.



    The upgraded MFI system places the injectors at the cylinder port and does not have poppets. You can identify this by looking down the throttlebody and seeing fuel lines with a rubber covering to protect the wires that run down to the injectors. The fuel lines on mine are white in color with grey protective covering. I highly recommend the upgrade.



    Before replacing, you should definately check for injector pulse from the computer. Also look at your spark plugs for evidence of flooding, which will look wet or shiney around the center electrode insulator. Also look to see if the intake looks wet inside indicating leaking SFI.

×

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 212 Answers

Try removing hose from throttle body and pour some fuel in engine if it fires up check for injector pulse. Parts store should have an injector tester. If you have spark fuel and air it should start.

Posted on Feb 03, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

It shut off while I was driving and now it won't start


The things to check are: is the engine still getting fuel and spark. Do you hear the fuel pump buzz on for 2 seconds with key in on? It has to turn on for 2 seconds to prime the lines and fuel rail on the engine-where the injectors sit. A fuel pressure gauge could be hooked up to test the fuel pressure, with key on. No pressure means the pump is not working right, not coming on. Either the pump has gone out, or the fuel pump circuit has a problem.

If gas is getting to the engine, then check for spark on a spark plug wire. No spark when cranking the engine over means there is a problem in the ignition system- spark plugs, plug wires, ignition coils (the coil pack), ignition control module, the pcm, the crankshaft position sensor-all of these components need to be checked. Buy a cheap spark tester and start there.

Apr 27, 2015 | 2000 Dodge Caravan

2 Answers

My 98 silverado wont start, engine cranks wont turn over, changed plugs,wires cap,rotor,crank shaft sensor was damaged changed that, also changed ignition coil, and camshaft sensor, fuel pump seems to be...


This is something that you cannot afford to throw any more money at. Get a timing light to check to see if there is spark. Use a pressure guage to check fuel pump. Get bug lights to test injectors.

Dec 16, 2014 | Cars & Trucks

1 Answer

I've got a 2005 chrysler 300 and it won't start I have changed fuel pump, camshaft and the crankshaft sensor coils and spark plugs and i still wont start what could be causing it not to start?


Try to determine if it is fuel or ignition related.
Turn key to on, do you hear the fuel pump turn on for a couple of seconds? It should come on briefly to pressurize the lines and fuel rail on the engine. Do you have fuel at the engine under pressure? Easiest and preferred way is to check fuel pressure with a pressure gauge at the test port on the fuel rail. With key on, pressure on mpfi systems should be 40-50 psi.
If there is gas in the fuel rail, test ignition by checking for spark on the end of a plug wire, with the engine cranking over. If you have a blue snapping spark, then ignition is probably good-may want to check more than one plug wire. Hold the metal terminal end of plug wire 1/4 inch from a ground on the engine, the engine block or a bolt or metal bracket. Verify a blue snapping spark, repeatedly, as the engine cranks. An orange spark, intermittent spark, or no spark points to an ignition problem. One thing you haven't changed is the ignition control module. This module, when signaled by the pcm, is what cuts the primary current to the coils for spark to be generated.

If you have both gas and spark, check the fuel injector circuit. Post back if you need help with that. There should be an injector fuse that needs checked. Also a fuse for the fuel pump, if no pump action, besides the fuel pump relay.

Apr 04, 2014 | 2005 Chrysler 300

2 Answers

1996 bronco starting


Need to find out if there is spark while cranking first. Check at the coil wire first then at a plug wire.If there is spark at the coil and not at the plug the fault is the rotor or dist. cap.If there is no spark at all,suspect the ign. module. If there is good spark move on to the fuel pressure check.It needs about 40 lbs. to run.

Dec 02, 2013 | Ford Bronco Cars & Trucks

1 Answer

1989 cutlas cera wont start its giving me code 12


Code 12 is a "good" code-it means system normal.
Since no codes are stored, check for spark and check for gas-is the fuel pump coming on? You should hear the pump buzz for a couple of seconds when you turn the key to on-it should start and pressurize the lines, then shut off until the engine is cranked-when cranking, pump should be running again. If you don't hear the pump, check if the fuel pump wire at the gas tank connector has power to it when the engine is cranking. If it does and the pump is not working, the pump will need replacing.
If no power, check the fuel pump fuse and relay, under the hood.
If the fuel pump is working, it may be ignition related-check for spark. You need to see a blue snapping spark to know the ignition system is good. If no spark, suspect the ignition control module or the crank position sensor -or the pickup coil, if no crank sensor. The pickup coil will be in the distributor-if you have one. If no distributor, crank position sensor is behind the crankshaft harmonic balancer.
If fuel pump and spark are good, you will need to diagnose the injector circuit.
Post back with what you find.

Sep 20, 2013 | Oldsmobile Cutlass Ciera Cars & Trucks

3 Answers

I have a 1996 mercury sable that wont srat i pulled up at home about 2 hours later tried o leave and it did not start, i checked the coil pack for a spark and it gave no fire, so i replaced the coil pack...


Probably the crank sensor, do you hear the fuel pump 'buzz' when you turn on the key (not cranking the engine, just key on)? If you do hear the fuel pump (only lasts about 2 seconds), it may be the ignition module, otherwise it is probably the crank sensor.

Jul 20, 2011 | 1996 Mercury Sable

2 Answers

Wont start turns over but no start


1 Inspect Battery Battery Discharged or Faulty. 2 Inspect Battery Cable Corroded, Broken, Shorted or Poorly Connected Battery Cable. 3 Inspect Fuel Filter Clogged or Dirty Fuel Filter. 3 Inspect Distributor Cap Distributor Cap Cracked or Burned. 5 Inspect Coil - Ignition Faulty Ignition Coil. 6 Inspect Wireset Worn, Damaged or Faulty Spark Plug Wire(s). 7 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s). 8 Inspect Starter Starter Motor Faulty. 9 Inspect Fuel Pump Low Fuel Pressure. 10 Inspect Solenoid Switch Faulty Starter Solenoid Switch. 11 Inspect Relay - Fuel Pumpat Faulty Fuel Pump Relay. 12 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator. 13 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch. 14 Inspect Starter Drive Faulty Starter Drive. 15 Inspect Fuel Injector Dirty or Worn Fuel Injectors. 16 Inspect Fuel Pump Strainer Clogged or Dirty Fuel Pump Strainerat. 17 Inspect Engine Control Computer Incorrect Operating Information Being Delivered and Sent From The EEC. 18 Inspect Fuel Tank Fuel Tank Empty. 19 Inspect Carburetor Carburetor Flooded or Faulty Choke. 20 Inspect Distributor Worn, Loose, or Incorrectly Installed Distributor.

Jul 02, 2009 | 1997 Ford F250 SuperCab

2 Answers

Car wont start


Fuel delivery must be confirmed with a fuel pressure gauge on this vehicle. Disconnecting the fuel line and cranking the engine to see fuel shooting out does not confirm pressure, it only confirms fuel delivery. Remember you need both fuel delivery and pressure. On this vehicle if the psi is off by just one number that's enough to keep it from starting. Also replacing the coil and rotor (as you stated) does not confirm that spark is reaching the plugs. Confirm that both spark and adequate fuel pressure are reaching ALL the spark plugs.

Dec 28, 2008 | 1985 Nissan 300ZX

1 Answer

2000 Oldsmobile Bravada


Please stop using the starting fluid, it is terrible for your engine- use choke cleaner if you need to do this in the future again. you can run it on choke cleaner indefinately if needed.
It sounds like your fuel pump quit on ya. When you turn the key to the "run" position do you hear the pump run in the tank for 3-5 seconds? you should. The fuel pump is in the gas tank and the tank has to be removed to acess it.
you can remove the coil wire from the coil and check to see if the coil is firing a spark. crank the engine with the wire off. make sure there is no starting fluid or choke cleaner fumes around before you do this-k? Carefull not to let it shock you. if it is sparking then you should check the fuel pressure. it should be 60psi while cranking the engine. you will need a fuel pressure guage to do this.
Good luck........Scott

Sep 21, 2008 | 2000 Oldsmobile Bravada

Not finding what you are looking for?
1998 Chevrolet C1500 Logo

1,216 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8516 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...