Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy

I'm working on a 1998 C1500 4.3 automatic. I 't have power

Customer Question
I'm working on a 1998...
I'm working on a 1998 C1500 4.3 automatic. I don't have power to the starter from the purple wire. When I check the N/S I have power on a red wire with the ing on and power out of the purple wire when ing is engaged in start mode. All other power functions seem to work fine.
JA: Sometimes things that you think will be really complicated end up being easy to fix with a Chevy. The Chevy Mechanic I'm going to connect you with knows all the tricks and shortcuts. Are you hoping to fix this yourself?
Customer: yes.
JA: Great! What have you tried so far?
Customer: All the fuses have power to both sides, changed relays a couple of times, rechecked ground wires, traced power coming from the N/S.
JA: Is there anything else the Chevy Mechanic should be aware of about your Chevy?
Customer: not at this time
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.
Submitted: 1 year ago.Category: Chevy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 11 minutes by:
3/1/2016
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago
George H.
George H., ASE Certified Technician
Category: Chevy
Satisfied Customers: 19,032
Experience: GM Tech ASE Master Tech 15+ years
Verified

Hello I will help you with your question,

You say you DO show 12 volts out on the purple wire at the safety switch with the key in the start position?

Ask Your Own Chevy Question
Customer reply replied 1 year ago
No volt meter just a test light, yes
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago

OK, next stop is the start relay in the underhood fuse block. You should show power to two of the pin sockets with the key in the start position, if you do connect a paperclip between the #30 and #87 pin sockets and see if the starter cranks the engine.

Do you know how to check ground with your testlight?

Ask Your Own Chevy Question
Customer reply replied 1 year ago
It will be later today before I can work on it. To test a ground you just do the opposite of checking for power, correct?
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago

That is fine I will be here all day.

Yes, you place the clip of the test light on a positive voltage source and touch the tip to the #85 pin in the relay socket. If the light comes on you have ground.

Let me know what you find

Thanks

Ask Your Own Chevy Question
Customer reply replied 1 year ago
Will do.
To give you more history on this truck. I bought it with a blown motor( rod thru the oil pan) to put a 4.3 with a fresh 4l60 from another c1500. Both have the same engine codes, transmissions mfg date with in a month. Other than the paint they are a mirror image.
It does gave a Clifford 1.2x auto start and door lock on it. I talked to the local Clifford dealer, he assured me that this model would not affect any functions when using the key.
The person I bought it from had no clue it was on there, so I don't have the remotes.
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago

I would remove the clifford system after you check the relay and we determine what is missing. They would HAVE to tap into the starting circuit for the remote start so the dealer is not telling you the truth and most of the time those systems turn in to junk after a few years due to the harsh enviorment.

Check the relay that will let me know which direction we need to go with this

I will watch for your post

Thanks

Ask Your Own Chevy Question
Customer reply replied 1 year ago
Had the starters tested and have not put one of the on yet but this is how it tested,
Pin 86 good ground key on or off
Pin 30 hot key on or off
Pin 85 & 87 no ground or fire
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago

So only one of the pins shows 12 volts with your light?

The purple white wire at the neutral switch that you measured 12 volts at before when you turn the key to the start position feeds the #85 or #86 pin of the relay.

Double check your readings, if you have 12 volts at the switch with the key in start but not to either the 85 or 86 then you need to find the break between the two.

You can test the starter on the vehicle with the paper clip as I posted above.

Let me know what you are seeing

Thanks

Ask Your Own Chevy Question
Customer reply replied 1 year ago
Purple has power out when starter engaged. Purple with white as nothing. The hot wire going to the switch is a pale red or pink. Yellow wire has nothing.
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago

I don't understand, the purple wire runs from the relay to the starter, you can energize that with 12 volts by using a paperclip from the #30 to the #87 and the starter should run to turn the enigne. IF it does the starter and that half of the circuit is good.

The purple white wire at the neutral switch should show 12 volts when you turn the key to the start position AND the #85 or #86 pin at the relay socket should show 12 volts from that same purple white wire when the key is in the start position.

At this point this is the only wires and testing we are concerned with.

Let me know what you measure at those points

Thanks

Ask Your Own Chevy Question
Customer reply replied 1 year ago
Got dark and cold so I'll have to try again tomorrow evening.
Customer reply replied 1 year ago
I did jump it and it will crank. So at least I know that.
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago

Ok, just concentrate on the pins of the starter relay, in the start position you should have two pins that show 12 volts, if you do not go back and check the purple white wire at the switch.

let me know what you find

Thanks

Ask Your Own Chevy Question
Customer reply replied 1 year ago
I've also wondered if I've skipped a ground wire some where.
Ryan side, body to frame, motor to frame.
Rt front. Battery to motor and one from the harness.
Harness to thermostat housing.
Chevy Mechanic: George H., ASE Certified Technician replied 1 year ago

The ground should be present at the relay, that is what you are checking after you determine that you have two pins with power, if you have the cable from the battery bolted to the block next to the starter then you have ground. We can get to checking for poor connections after you confirm you have power to the starter on the purple wire when you turn the key.

One step at a time.

I will be here tomorrow so let me know how I can help

Thanks

Ask Your Own Chevy Question
Ask George H. Your Own Question
George H.
George H.
George H., ASE Certified Technician
Category: Chevy
Satisfied Customers: 19,032
19,032 Satisfied Customers
Experience: GM Tech ASE Master Tech 15+ years

George H. is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,289 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,357 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,866 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,918 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,734 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
1989 5.7 liter throttle body engine. I was driving, engine
1989 5.7 liter throttle body engine. I was driving, engine was running fine, and came to stop sign. Upon trying to accelerate from the stop, the engine would hardly run. Bad miss and backfire visible … read more
rpmdiag
rpmdiag
High school
7,273 satisfied customers
1998 blazer takes longer to start when the engine is at
1998 blazer takes longer to start when the engine is at normal operating temperature after it's been off about 5 minutes or more. Starts up like new in the mornings after the engine has cooled down al… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
Replaced the thermostat and display still shows up engine
replaced the thermostat and display still shows up engine hot ac off. i was told there is a way to reset it from the cluster. … read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,357 satisfied customers
I'm having issues with idling and stalling. Check engine
check engine light on yes. stall at idle only. I just replace the ignition control module and code p0300 has gone off but the same symptoms exist now it gives code p0106 … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Engine idles high when cold and then pulsates for a while
engine idles high when cold and then pulsates for a while until it warms up … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
How do I determine if the engine temperature sensor is
how do I determine if the engine temperature sensor is working properly in my 2005 Chevy Venture. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
2008 Chevrolet Tahoe. Intermittently the engine will not
2008 Chevrolet Tahoe. Intermittently the engine will not crank. I found if I wiggled the negative cable it would start. I have changed the battery and the Negative cable assembly but the problem has r… read more
roy
roy
Associate Degree
3 satisfied customers
1995 Suburban K2500 with 7.4L engine here. There is a loose
1995 Suburban K2500 with 7.4L engine here. There is a loose wire, dark green with a white stripe, running next to auxillary fan switch wire (light green). Right now it's not connected to anythimg, jus… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
The reduce engine message and the engine light on and alot
the reduce engine message and the engine light on and alot if shacking when I started it this morning … read more
Jared D
Jared D
Shop Supervisor
Bachelor\u0027s
3 satisfied customers
The engine shuts off, and its service traction control
the engine shuts off, and its service traction control popped up on the dash.. … read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
Check engine light not on with key on, Not on alt all with
Yes -performed tuneup replaced all sensors except knock … read more
Peter Zavarelli
Peter Zavarelli
General auto certifications
269 satisfied customers
Engine is running 240 degrees and not holding water/anti
engine is running 240 degrees and not holding water/anti freeze and heater is not working … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
Check engine light on engine hot ac off message. Stay on.
check engine light on engine hot ac off message JA: Does the light stay on, or does it blink? Customer: stay on JA: What is the model/year of your Chevy? Customer: impala 2006 JA: Are you fixing your … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I have a 2013 Tahoe with 5.3 engine. The service engine
I have a 2013 Tahoe with 5.3 engine. The service engine light comes on when the temperature drops below 45 degrees. It will go out when the temperature is above 45 or 50 degrees. The code it sets is P… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Check engine light is on... It spudders at an idel. And
Check engine light is on... It spudders at an idel. And sometimes doesnt start .. … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
The engine and traction control lights are on, and there is
The engine and traction control lights are on, and there is a "service traction" message on my 2011 Malibu. … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
86 K10 temp. gauge goes to hot and engine dies, but engine
86 K10 temp. gauge goes to hot and engine dies, but engine is still cool … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
1996 chevy Silverado k2500 5.7 vortec engine engine light on
1996 chevy Silverado k2500 5.7 vortec engine engine light on po300 random misfire detected we replaced plugs wires Distributor cap and rotor pickup coil checked compression everything is good there ch… read more
Michael Solis
Michael Solis
363 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x