Cadillac

Cadillac repair questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

Cylinder 1 misfire and I have changed the fuel injector the…

Customer Question
Cylinder 1 misfire and...

Cylinder 1 misfire and I have changed the fuel injector the spark plug and the coil and the engine light and the problem still exist

Mechanic's Assistant: Has your vehicle stalled? Has anyone run a diagnostic test to pull the trouble code?

Yeah there is the code for cyclinfer 1 open misfire and cyclinfer 1open misfire injector

Mechanic's Assistant: What is the model/year of your Cadillac?

2005 cts

Mechanic's Assistant: Are you fixing your CTS yourself? What have you tried so far?

I just described what was serviced

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Fuel injector , spark plug. Coil

Submitted: 1 month ago.Category: Cadillac
Show More
Show Less
Ask Your Own Cadillac Question
Answered in 1 minute by:
3/10/2018
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago
Jerry Newton
Jerry Newton, Cadillac Technician
Category: Cadillac
Satisfied Customers: 5,628
Experience: ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.
Verified

Is it actually running poorly, or is it just setting a code?

Ask Your Own Cadillac Question
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago

Did you still need help with this?

Please take a moment to rate my answers using the stars at the top of the page, that's how I get compensated. Let me know if you need anything else, I am happy to follow up.

Ask Your Own Cadillac Question
Customer reply replied 1 month ago
ITS running poorly but come to find it’s a ecm problem
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago
You’ve verified this? Are you replacing it yourself or having it done?
Ask Your Own Cadillac Question
Customer reply replied 1 month ago
Went through a series of check ecm isn’t giving power to the injector which is cord 53 on the ecm and it was checked. Which gave little to no power all others voltage tested at 3.5 injector one is .7
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago
7 what? This engine operates by the rcm supplying ground to the injectors, power is present at all times when key is on. What were you measuring?
Ask Your Own Cadillac Question
Customer reply replied 1 month ago
I said .7 which is coming out the ecm on injector 1 this is a voltage test .. every other injector is reading 3.5 .. and a ground runs all injectors on one side so if it was a poor ground would all injectors be misfirimg ? What do you think this is seems to me you assuming something else may be wrong instead of a ecm
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago

ECM can be faulty, I'm just going over your testing results.

ECM supplies ground to the injectors by pulsing. Injectors have power at all times, so the injector opens when the ECM supplies this ground, which it does on an individual basis for milliseconds at a time.

Power to the injector comes from a fuse, not from the ECM. I want to be sure your test results are accurate before you spend the money ($$$$) on replacing the ECM, and so far, I don't think you're headed the right way. Trying to save you money and disappointment.

Ask Your Own Cadillac Question
Customer reply replied 1 month ago
Thanks I check the fuse as well what else I need to check
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago

Go to #1 injector and see if you actually have B+ at one of the wires by using a test light. With key on, one of the two wires should have power, the other should have nothing... not power, not ground.

Ask Your Own Cadillac Question
Customer reply replied 1 month ago
That’s what we did wire 53 don’t have anything
Customer reply replied 1 month ago
from the injector connector there’s is power coming out it we plugged a tester that looks like a bulb to it and the bulb didn’t light up
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago
Ok and you performed this test while cranking the engine?
Ask Your Own Cadillac Question
Customer reply replied 1 month ago
sir
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago
Ok! And you verified this lack of ground signal right at the ecm as well? That is to say, this wire isn’t just broken, is it?
Ask Your Own Cadillac Question
Cadillac Mechanic: Jerry Newton, Cadillac Technician replied 1 month ago

Did you get this worked out?

Please take a moment to rate my answers by clicking on the stars at the top of the page, that's how I get compensated. If you need more help, just let me know, I am happy to follow up.

Ask Your Own Cadillac Question
Was this answer helpful?
Ask Jerry Newton Your Own Question
Jerry Newton
Jerry Newton
Jerry Newton, Cadillac Technician
Category: Cadillac
Satisfied Customers: 5,628
5,628 Satisfied Customers
Experience: ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

Jerry Newton 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:

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

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Jerry Newton

Jerry Newton

Cadillac Technician

5,628 satisfied customers

ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

Dave Nova

Dave Nova

Cadillac Technician

1,522 satisfied customers

ASE Master Certification. GM World Class Certification

Gm Tech (Cam)

Gm Tech (Cam)

Cadillac Mechanic

1,003 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

John

John

ASE Certified Technician

941 satisfied customers

ASE CERTIFICATIONS A1-A8 & L1 / 40 YEARS AUTOMOTIVE EXPERIENCE

George H.

George H.

ASE Certified Technician

775 satisfied customers

ASE Master Tech 15+ Years

Chris (aka- Moose)

Chris (aka- Moose)

Cadillac Technician

744 satisfied customers

16 years of experience

Don - Mo Lurch

Don - Mo Lurch

Cadillac Technician

690 satisfied customers

GM, Cadillac Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

< Previous | Next >

Related Cadillac Questions
My 2007 CTS Cadillac won't start will crank but not start
My 2007 CTS Cadillac won't start will crank but not start after a minor accident remove the parts waiting for parts to come in put the new parts on and the battery is at 12 volts … read more
Chris (aka- Moose)
Chris (aka- Moose)
Cadillac Technician
Vocational, Technical or Trade School
744 satisfied customers
I have a 2004 Cadillac CTS 3.6 liter engine. My throttle
I have a 2004 Cadillac CTS 3.6 liter engine. My throttle seem to be getting stuck for quite some time now but it could still be driven and if you play with the gas pedal a little bit it would unstick … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,050 satisfied customers
I took the battery out of my Cadillac cts coupe and the
i took the battery out of my Cadillac cts coupe and the trunk close cant open the doors or trunk … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Have a 2009 Caddy CTS. Need to replace both front headlamps.
Have a 2009 Caddy CTS. Need to replace both front headlamps. Do your replacements come with bulbs and do they move with the steering wheel with the factory? THX Brad … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Cts won't start anti theft is on can't remove key. 2007. I
Cts won't start anti theft is on can't remove key JA: Have you checked the battery, particularly the terminal connections? Are they corroded? Customer: No JA: What year is your CTS? Customer: 2007 JA:… read more
Jerry Newton
Jerry Newton
Cadillac Technician
5,628 satisfied customers
Miss firing 135. 2003 cts 3.2. Replaced spark plugs and coil
miss firing 135 JA: What is the model/year of your Cadillac? Customer: 2003 cts 3.2 JA: Are you fixing your CTS yourself? What have you tried so far? Customer: replaced spark plugs and coil pack JA: H… read more
Jerry Newton
Jerry Newton
Cadillac Technician
5,628 satisfied customers
2003 CTS - Won't Start - Key Stuck In Ignition - Shifter
2003 CTS - Won't Start - Key Stuck In Ignition - Shifter Stuck in Park! in Cadillac CTS Coupe, Sport S … read more
Jerry Newton
Jerry Newton
Cadillac Technician
5,628 satisfied customers
My 2010 cts is misfiring and my mechanic is telling me its
My 2010 cts is misfiring and my mechanic is telling me its common with these engines and is to expensive to fix … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
Ordering brake pads online for a 2008 Cad. CTS. What does
Ordering brake pads online for a 2008 Cad. CTS. What does the GM Code JE5 mean. … read more
Jerry Newton
Jerry Newton
Cadillac Technician
5,628 satisfied customers
Does the 2008 Cadillac cts have a northstar engine?? Im
does the 2008 Cadillac cts have a northstar engine?? … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I have a 2005 cadillac cts 3.6 i am getting a code for
i have a 2005 cadillac cts 3.6 i am getting a code for misfire on banks one and three and a random miss fire and a code p0500 i have change plugs on all cylinders fuel injectors on 1and 3 and coils on… read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
89 satisfied customers
I have a 2003 Cadillac CTS. sometimes will not start with
I have a 2003 Cadillac CTS. sometimes will not start with key and locks key in the ignition. I can turn key to on and jump starter relay and it will crank and will drive fine and when I turn it off I … read more
Danny
Danny
Owner, lead mechanic
High School or GED
3,963 satisfied customers
2012 Cadillac CTS: My Display on the radio will not come on
2012 Cadillac CTS: My Display on the radio will not come on but the radio wants when i push the buttons everything works - the back light is on only doesnot display the words ***** ***** … read more
Jerry Newton
Jerry Newton
Cadillac Technician
5,628 satisfied customers
I have a 2008 cts and the engine light is on and it says
I have a 2008 cts and the engine light is on and it says that the engine power is reduced on the dash … read more
ggrote1
ggrote1
Vocational, Technical or Trade Scho
13 satisfied customers
I got engine light on with 2 code p0014 and p0021. 2008 cts
yes .. i Replacing the camshaft oil control valve for bank 2 intake camshaft and the p0014 come off , now i just have the p0021 code … read more
Jerry Newton
Jerry Newton
Cadillac Technician
5,628 satisfied customers
2007 CTS v-6 jerking and hesitation running rough around 50
2007 CTS v-6 jerking and hesitation running rough around 50 mph now running rough at idle also oil sensor replaced last week as check engine light was on, mechanic says it may need new spark plugs … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Cadillac CTS: 2008 Cadillac CTS, battery died had to be
Cadillac CTS: 2008 Cadillac CTS, battery died had to be replaced, 2008 Cadillac CTS, battery died, had to be replaced with new battery, now dash lights blink and gauges don't work when the car is star… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
The engine of my 2006 cadillac cts was changed by an engine
the engine of my 2006 cadillac cts was changed by an engine of a 2008 cts the car worked very well for 11 months, a month later I had to try 2/3 to start the car, then it was not possible to turn it o… read more
Michael Solis
Michael Solis
439 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