Question about 1996 GMC Yukon

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After tune up changed spark plugs and wires vehicle won't start

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  • Big A's Auto Repair
    Big A's Auto Repair Aug 26, 2014

    Hi courtney musgraves, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Do you have a CHECK ENGINE LIGHT ON? If you do find out what the code is and let me know! Thanks.

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Posted on Jan 02, 2017

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Brian032472
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SOURCE: looking for spark plug wiring diagram

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Posted on Feb 01, 2009

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SOURCE: we changed spark plugs &

Here is the firing order diagram for the 5.0 liter (305), 5.7 liter (350) and the 7.4 liter (454) V-8 engines (note position of locking latches/screws between the 3 and 6 and the 1 and 2 terminals on the distributor cap). Let me know if you need the 4.3 liter V-6 engine diagram (hopefully not in a 2500 series truck) or if you require any further assistance.




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Posted on Nov 29, 2010

  • 95 Answers

SOURCE: After getting a tune up

The mechanic that did the tuneup might have got cap/rotor position screwed up. If what you listed is all they replaced thats the most likely thing. Or they mixed up the position of a couple of spark plug wires. Those are the 2 things to check.

Posted on Sep 21, 2011

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1 Answer

Code P0170 and P0173


The shop failed to do basic preventative maintenance
such as scan the systems,look at data & possibly road test
The vehicle is a 2000 year you ask about oxygen sensors
& when they were replaced & look at mileage They get changed
at 100,000 miles
You got idle issues
What happened there? They let that go also
Google any codes you get
OBD PO171 etc
I would find a different shop
Tune-Up is no more than spark plugs & that
is preventative maintenance
You don't do a tune-up for a problem
You do spark plugs every 3 years & then you know
when they were done last & proceed to diagnose the
drivabelity issues
These shops will do & sell what ever you ask & then some
to stay in business
They fail to really check your vehicle over completely
you can't install spark plugs & throw on wires you don't need
& expect that to do a thing as far as knowing how the vehicle
is operating.there electronically controlled & need those systems also

Jul 22, 2013 | Mitsubishi Cars & Trucks

1 Answer

Truck won't turn over or start


if it wont turn over that means there is no spark to your spark plugs u mite check your distributor cap or it could more seriouse like the ECU in the vehicle which is the brain and I justthot of this how about changing the ignition in the steering column before anything else>

Apr 07, 2013 | 2003 Ford Explorer Sport Trac

1 Answer

Engine won't start


the spark plug wires can be confusing but a 4 cylinder is not that hard from the front of the engine being where the pulleys & belts are its 1,2,3,4 on the coil or distributor it can be in counter or clockwise rotation 1&3,2&4 or 1&4,2&3 likely its 1&3,2&4 hope you find this helpful

Mar 03, 2013 | Cars & Trucks

1 Answer

I have a 94 chrysler concorde. The problem is it won't start, I have replaced the fuel pump and the fuel pump relay fuse. And it still won't start. What should I do now?


check see if you getting spark if not.have vechicle code scan could have faulty ECM .faulty camshaft sensor and crankshaft sensor.make sure engine has been tuned up.replace fuel filter change spark plugs and wires. before engine can run need fuel and spark.either one not working car will not crank.

Jan 12, 2013 | Cars & Trucks

2 Answers

1989 dodge ram 50 turns over but won't start. has spark. is getting fuel.


Sounds like you covered everything you did. I would pull the dist. cap back off. Take a good look at your rotor. Does it screw down or push down on. If it has screws that hold it down, take it off and make sure that it isn't 180 degree out. some of the older ones will fit either way but it wont' sit just right. Let me know how you make out.

Nov 29, 2012 | Dodge Ram 50 Cars & Trucks

1 Answer

Toyota 4runner sr5 won't start its getting gas and spark.


Sounds like the problem is beyond your ability to diagnose

Too much fuel could be a leaking fuel injector or fuel pressure
regulator.

Too much gas & a no start isn't really the issue

Did it start & run before you did the wires,I would check your work
& mark the wires with a pen & also have diagram on paper before
you start a job like that. Especially when if you have no reference
material.

You put a mechanical fuel pressure gauge on a running engine
& the apply vacuum with a hand pump to regulator to watch for
pressure change,eg: pump pressure vs: regulator press

Nov 17, 2012 | 1997 Toyota 4Runner

1 Answer

1997 mazda 626 won't start.


Are the plugs wet with fuel?
Check for spark. No spark? it may be the ignition module.

Plugs dry and spark present? No fuel?Spray a little starting fluid and see if it will run on that.
Then check pump fuses and for fuel pump noise.

Jun 01, 2017 | 1997 Mazda 626

1 Answer

I don't know where the plugs are in my towncar. 4.6 2001. I have a miss in the motor . I have not had it tuned up as they say you can go 100.000 . I have 93,000. Or should I take it to the shop?


No where does it say you can go 100,000 miles on any product

Spark Plugs ---get changed at 60,000 miles & not over 3 years
O2 Sensor--- the front ones only-- get changed at 100,000 miles
Trans & Power Steering Fluids --- get changed on ALL Vehicles
every 30,000 miles NEVER over 3 years ( ever )
Brake Fluid --ALL Vehicles every 2 years

No such thing as a tune- up (spark plugs --only)
Computers have done the tuning since 1980 some 32
model years

Plugs are under the COP Ignition Coils
Remove Coils,then Plugs

Jul 24, 2011 | Lincoln Town Car Cars & Trucks

1 Answer

I have a 2001 Chevy Venture. The vehicle is hard to start when it is cold or after it has been running. Once it starts,itruns fine. Also has a engine code lean bank one. I know one of the issues could be...


I have never heard of a major tune-up

All vehicle tuning has been done by
on board computers since 1980
some 30 years

Spark plug wires last the life of the vehicle
They only get replaced when they fail.
I had 1 wire fail in 46 years,personally

You do not have both an Ignition Module
as well as Coil Packs. They are installed
in two different systems

Any dash light you get & again they have
been there for 30 years,you retrieve any codes
within a couple days,diagnose code issues first
& repair. You have O2Sensor Codes
They wouldn't effect hard start problems

I would check fuel pressure with a gauge
Also Fuel Pressure Regulator

Vacuum Leaks
At least clean the MAF Sensor
Check TPS Sensor

Basically you need your vehicle tested in all
areas

There is a serious misconception that a
tune-up ,spark plugs etc are a cure all

I don't even start there when diagnosing
anything. You could throw away 2 plugs
& it would still start

I want to see what does work & how

Spark Plugs & other items you can get
from the vehicle history & past maintainance



May 27, 2011 | 2002 Chevrolet Venture Passanger

1 Answer

How to do a tune-up for my vehicle by myself


- Change the oil
- Change the spark plugs
- Change the spark plug wires
- Change the cap & rotor or the coils
- Check the timing
- Lube the chassis
- Inspect all fluids
- Change the fuel filter
- Change the air filter

Jan 13, 2011 | 2004 Chevrolet Malibu Maxx

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