Question about 1997 GMC Suburban

2 Answers

Motor cranks but won't start.

The motor cranks fine but won't start. Actually, it cranks more smoothly if the coil wire is pulled off. It's almost like there is no spark or the spark is coming at the wrong time.
It may have had a loose battery connection for a while, because sometimes it would crank very slowly, especially if the lights were on. But all connections are fine now, and the battery is fully charged.
What would make it run fine and then suddenly not start at all?

Posted by on

  • Anonymous Dec 04, 2008

    i have this problem also

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I had the same problem with my truck and it was the distributor cap and rotor.I had to replace the spark plugs as well because all that cranking over fouled the plugs.

Posted on Feb 01, 2009

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

Better check that distributor cap for damage on the inside. It's simple. Just need a flat tip screwdriver. If thats fine. I'd check voltage to coil and if it was 12 or more I'd through a coil at it. It's an easy repair.

Posted on Jan 08, 2009

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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
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:

1 Answer

Power to red wire on coil no power to distributor wires


Yes the crank sensor could keep the coil from firing, but your truck does not use a crank sensor assuming its a V8.
The coil gets power from the key switch, and the ignition module inside the distributor grounds the coil to fire it.
So the problem could be the coil, or the module or pickup in the distributor. The pickup coil in the bottom of the distributor acts as a cam and crank sensor.
You may need a repair book or shop manual to get the test procedures.

Feb 21, 2013 | 1988 Chevrolet C/K 3500

1 Answer

My 91 Mercedes sel won't start. The battery is


check all wires to starter motor for bad earth.....make sure power reaching starter motor.....check starter motor isnt stuck

Feb 07, 2013 | Cars & Trucks

1 Answer

91 Cherokee will crank but won't fire. Replaced


how much is the RPM showing in the datatlogger while cranking?

Dec 03, 2012 | Cars & Trucks

1 Answer

2004 lancer won't sart


have you got the timing set correct ,and did you fit the timing belt with all the timing marks lined up ,etc , if there correct ,check for spark ,by pulling off a spark plug lead and fitting an old plug into the lead ,then crank the motor ,dont hold the plug with your hand ,use insulted pliers ,if you have spark, ,if no spark check coil wiring ,coil, crank angle sensor,

Jun 08, 2012 | Cars & Trucks

2 Answers

Hyundai sonata cranks fine but won't start


other things it could be crank position sensor or maybe a fuel issue?

Feb 13, 2012 | Hyundai Motor 2004 Sonata

1 Answer

Engine cranks but,won't start, I pulled a spark plug and touched threads to ground (with cable attached) while helper turned key to start, and got no spark. fuses are good, battery is strong. how do i...


check for signal getting to coil with a l.e.d test light the coil should have 12v pos going into it and the neg side should pulse when the motor is cranked. if no input is there check c.s.p sensor.

Oct 28, 2011 | 1996 Toyota Tercel

1 Answer

Engine turns over as if out of gas but won't start


First you have to determine weather you have a FUEL problem or (ELECTRICAL)Spark problem ??

Pull the coil wire off or a easy to get to spark plug wire, Lay it close to were you pulled it off of (Do not hold or touch you may get SHOCKED) and crank motor (need two people) look and listen for a spark, if you see or here a spark, then go to next step which will be to check for Fuel (gas). Be very careful when checking fuel, as most lines are under pressure and may cause bodily harm such as BURNS to EYES and SKIN!! Loosen or pull the inlet fuel line off and put rag over line. Some fuel injected vehicles have a fuel rail the has a valve that looks like a tire valve. Put a rag over this valve and push it in with a small screw driver and have someone crank motor a couple of times to see if fuel is coming out.

If NO Spark---Could be a lot of things Points (older vehicles) Modules, Coils, Crank Sensors, ECT......

If NO Fuel---- Could be Clogged fuel filter, Fuel Pump, Fuel pump Relay, Fuse, ECT..........

Hope this helps you ??

Sep 15, 2011 | 1996 Lexus LS 400

1 Answer

Engine will turn over but will not start We checked the red button in the trunk to the fuel pump and it still won't start


First you have to determine weather you have a FUEL problem or (ELECTRICAL)Spark problem ??

Pull the coil wire off or a easy to get to spark plug wire, Lay it close to were you pulled it off of (Do not hold or touch you may get SHOCKED) and crank motor (need two people) look and listen for a spark, if you see or here a spark, then go to next step which will be to check for Fuel (gas). Be very careful when checking fuel, as most lines are under pressure and may cause bodily harm such as BURNS to EYES and SKIN!! Loosen or pull the inlet fuel line off and put rag over line. Some fuel injected vehicles have a fuel rail the has a valve that looks like a tire valve. Put a rag over this valve and push it in with a small screw driver and have someone crank motor a couple of times to see if fuel is coming out.

If NO Spark---Could be a lot of things Points (older vehicles) Modules, Coils, Crank Sensors, ECT......

If NO Fuel---- Could be Clogged fuel filter, Fuel Pump, Fuel pump Relay, Fuse, ECT..........

Hope this helps you ??


Jul 14, 2011 | 1998 Ford Escort

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

157 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

64034 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

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

Answer questions

Manuals & User Guides

Loading...