Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy
This answer was rated:

I have a 2011 equinox it ran fine yesterday now today it…

Gary, I have a 2011 equinox...
Gary,
I have a 2011 equinox it ran fine yesterday now today it will not start. It will turn over and try to fire but will not start unless you hold the gas to the floor. Once it starts it will run al be it rough for a few minutes then die with the reduced power warning. Please help
Thanks,
Jeremy
Show More
Show Less
Ask Your Own Chevy Question
Answered in 2 minutes by:
1/15/2018
Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 17,606
Experience: 15 years GM master tech
Verified

Welcome! My name is ***** ***** I will do my best to assist you with this problem.Ask me about added features such as phone contact anytime if you wish !

Ask Your Own Chevy Question

can you check for any codes set ?

Ask Your Own Chevy Question
Customer reply replied 1 month ago
There are no codes flashing

any access to a code reader ?

if not if you disconnect both battery cables for 5 minutes then touch the 2 cables together for 1 minute then reconnect both to the battery will it still do this ?

Ask Your Own Chevy Question
Customer reply replied 1 month ago
I will try

let me know

ill be here

Ask Your Own Chevy Question
Customer reply replied 1 month ago
It did not work. However with the gas cap off it will now start and run for a short time (longer than before) before the reduced power warning comes on.
Customer reply replied 1 month ago
You do not have to floor the gas now with the cap off.

usually when you have reduced power the computer can not read the throttle body

do you know where the throttle body is on this engine ?

Ask Your Own Chevy Question
Customer reply replied 1 month ago
Do I need to unplug and reconnect it?

yes unplug it then plug it back in and do the battery thing again

Ask Your Own Chevy Question
Customer reply replied 1 month ago
It did not work.

ok at this point you need the codes read

the odds are the throttle body is bad which is usually what causes this issue

if the codes read are TPS or throttle body codes the throttle body would need to be changed next

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Ask Your Own Chevy Question
Customer reply replied 1 month ago
Is this something I can do myself or will it need to be calibrated?

should be plug and play

but have the codes confirm it

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Ask Your Own Chevy Question

please dont forget to rate me here at Justanswer

you can always get me back for FREE for any follow up any time with this question even after you rate me here at Justanswer

if you have any questions please ask as i do not get credit for my work until you rate me here at Justanswer

Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 17,606
Experience: 15 years GM master tech
Verified
Gary and 87 other Chevy Specialists are ready to help you
Ask your own question now
Customer reply replied 1 month ago
By the way I just read the codes I have a P228d and a P0089 does this help?

those codes are saying a fuel pressure performance issue

Powertrain Management

  • Vehicle
  • ALL Diagnostic Trouble Codes ( DTC )
  • Testing and Inspection
  • P Code Charts
  • P228D
  • ALL Diagnostic Trouble Codes ( DTC )

POWERTRAIN MANAGEMENT

DTC P0089, P00C6, P228C, or P228D

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Vehicle > Initial Inspection and Diagnostic Overview > Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Vehicle > Initial Inspection and Diagnostic Overview > Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Vehicle > Initial Inspection and Diagnostic Overview > Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptors
DTC P0089
- Fuel Pressure Regulator Performance

DTC P00C6
- Fuel Rail Pressure Low During Engine Cranking

DTC P228C
- Fuel Pressure Regulator 1 Control Performance - Low Pressure

DTC P228D
- Fuel Pressure Regulator 1 Control Performance - High Pressure

Circuit/System Description

The fuel rail pressure sensor detects fuel pressure within the fuel rail. The engine control module (ECM) provides a 5 V reference voltage on the 5 V reference circuit and ground on the low reference circuit. The ECM receives a varying signal voltage on the signal circuit.

High pressure fuel is regulated by the high pressure fuel pump actuator, which is a part of the high pressure fuel pump. The high pressure fuel pump actuator is a solenoid valve. The ECM provides a voltage on the actuator high control circuit and ground on the actuator low control circuit. Both circuits are controlled through output drivers within the ECM. When deactivated, both drivers are disabled. When activated, the high control circuit driver energizes the high pressure fuel pump actuator and the low control circuit driver pulse-width modulates (PWM) the low control circuit to ground.

The high pressure mechanical fuel pump is driven by three lobes on the camshaft. The ECM uses the camshaft and crankshaft position sensor inputs to synchronize the high pressure fuel pump actuator with the position of each of the camshaft lobes. The ECM regulates fuel pressure by adjusting the portion of each pump stroke that provides fuel to the rail.

The ECM monitors the fuel rail fuel pressure sensor and the high pressure fuel pump actuator to determine if the commanded and actual pressure are within a predetermined range, or if the amount of fuel pressure correction exceeds a calibrated pressure.

Conditions for Running the DTC

P0089, P228C, or P228D
* DTC P0090, P0091, P0092, P0191, P0192, or P0193 is not set.
* The ignition voltage is less than 18 V.
* The deceleration fuel cut-off (DFCO) is inactive.
* The engine speed is greater than 25 RPM.
* The air bag is not deployed.
* The DTCs run continuously when the above conditions are met for 5 s.

P00C6
* DTC P0090, P0091, P0092, P00C8, P00C9, P00CA, P0116, P0117, P0118, P0128, P0192, P0193, P0335, P0336, P0340, P0341, P0345, P0346, P0365, P0366, P0390, P0391, P0627, P0628, P0629 are not set.
* The ignition voltage is more than 8 V.
* The engine coolant temperature is between -100 and +65°C (-148 and +149°F).
* The low side fuel pressure is more than 0 kPa (0 psi).
* The engine is not running.
* The DTC runs once for each engine start.

Conditions for Setting the DTC

P0089

The high pressure fuel pump actuator command necessary to maintain the desired fuel rail pressure is +/-2,500 kPa (363 psi) of the command expected by the controller. The condition exists for greater than 5 s.

P00C6

The ECM detects that the fuel pressure is not rising or has fallen beyond acceptable limits during engine cranking.

P228C

The actual fuel rail pressure is 1,500 kPa (218 psi) less than the desired fuel pressure. The condition exists for greater than 5 s.

P228D

The actual fuel rail pressure is 3,600 kPa (522 psi) greater than the desired fuel rail pressure. The condition exists for greater than 5 s.

Action Taken When the DTC Sets

* DTCs P0089 and P00C6 are Type B DTCs.
* DTCs P228C and P228D are Type A DTCs.
* A message center or an indicator displays Reduced Engine Power.

Conditions for Clearing the DTC

* DTCs P0089 and P00C6 are Type B DTCs.
* DTCs P228C and P228D are Type A DTCs.

Diagnostic Aids

* A restricted fuel feed pipe between the fuel feed pipe fuel pressure sensor and the high pressure fuel pump may set a DTC.
* A condition with the fuel tank fuel pump module or fuel pump flow control module may set these DTCs.
* A skewed fuel rail pressure sensor, or an intermittent condition in the fuel rail pressure sensor circuits may set these DTCs.
* A leaking or restricted fuel injector may set DTC P0089.
* A short to voltage in the crankshaft position signal circuit may set a DTC.
* A short to voltage in the camshaft position actuator solenoid valve control circuit may set a DTC.

Reference Information
Schematic Reference

Engine Controls Schematics (See: Powertrain Management > Electrical > Engine Controls Schematics)
Connector End View Reference

Component Connector End Views (See: Vehicle > Connector Views > Connector End Views By Name)
Description and Operation

Fuel System Description (See: Computers and Control Systems > Components > Fuel System Description)
Electrical Information Reference

* Circuit Testing (See: Vehicle > Component Tests and General Diagnostics > Circuit Testing)
* Connector Repairs (See: Vehicle > Component Tests and General Diagnostics > Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Vehicle > Component Tests and General Diagnostics > Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Vehicle > Component Tests and General Diagnostics > Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: A L L Diagnostic Trouble Codes ( DTC ) > Diagnostic Trouble Code Descriptions > Powertrain Diagnostic Trouble Code (DTC) Type Definitions)
Scan Tool Reference

Control Module References (See: Vehicle > Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P0627, P0628, P0629, P069E, or U0109 should not set.

♦ If a DTC is set refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: A L L Diagnostic Trouble Codes ( DTC ) > Diagnostic Trouble Code Descriptions > Diagnostic Trouble Code (DTC) List - Vehicle).

2. Attempt to start and idle the engine.
3. Observe the DTC information with a scan tool. DTCs P0089, P00C6, P228C, and P228D should not set.
4. Engine idling, observe the Fuel Rail Pressure Sensor parameter with a scan tool. The pressure should be approximately 1.9-2.1 Mpa (279-305 psi).
5. Command an increase and decrease in Fuel Pressure with a scan tool. Observe the scan tool Fuel Rail Pressure Sensor parameter. The Fuel Rail Pressure Sensor parameter should increase or decrease with each commanded state.
6. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

Note: Circuit/System Verification must be performed first or misdiagnosis may result.

1. Ignition ON, observe the scan tool Fuel Pump Control Module Fuel Pressure Sensor parameter. Command an increase in Fuel Pressure with a scan tool. Verify the scan tool Fuel Pressure Sensor parameter increases to greater than 414 kPa (60 psi) as commanded.

♦ If less than the specified range, refer to Fuel System Diagnosis (See: Computers and Control Systems > Component Tests and General Diagnostics > Fuel System Diagnosis).

Note: As little as 2 ohm on either circuit of the high pressure fuel pump actuator will cause these DTCs to set. Test the circuits of the high pressure fuel pump actuator for a high resistance if you suspect a condition.

2. Remove the G18 high pressure fuel pump and visually inspect the lobes on the camshaft for unusual wear.

♦ If the lobes appear normal, replace the G18 high pressure fuel pump.
♦ If the lobes are worn, replace the camshaft.

Component Testing
Static Test

1. Ignition OFF, disconnect the harness connector at the G18 high pressure fuel pump.

Note: The DMM and test leads must be calibrated to 0 ohm in order to prevent misdiagnosis.

2. Test for 10 ohm plus/minus 1 ohm at 25°C (77°F) between the low control circuit terminal 1 and the high control circuit terminal 2.

♦ If not within the specified range, replace the G18 high pressure fuel pump.

3. Test for infinite resistance between each terminal and the G18 high pressure fuel pump housing.

♦ If not the specified value, replace the G18 high pressure fuel pump.

Ask Your Own Chevy Question
Ask Gary Your Own Question
Gary
Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 17,606
17,606 Satisfied Customers
Experience: 15 years GM master tech

Gary 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

17,606 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
Started truck to run an errand, and the turn off engine
started truck to run an errand, and the turn off engine immediately warning came on. beeping sound of the warning continued until truck was turned off. can i drive it to a dealership for service with … read more
Gary
Gary
Chevy Technician
17,606 satisfied customers
Service Traction light came on and reduced engine speed.
Service Traction light came on and reduced engine speed. Can't go over 40mph.what can I do … read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
Working on a 2005 Chevy trailblazer 4.2 L engine. The
Working on a 2005 Chevy trailblazer 4.2 L engine. The vehicle will not move from Park. The shifter is stuck in park. The brake lights are functioning normally. Seems like a switch or sensor of some so… read more
eurotec
eurotec
Vice President / Manager
Associate Degree
11 satisfied customers
Started engine with remote! Engine ran for about ten seconds
Started engine with remote! Engine ran for about ten seconds died,tried with the key won't start ! Checked fuel pressure on a shrader valve ! No fuel!? … read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
76 satisfied customers
2005 Colorado.Check engine light on. Code 5th cylinder
2005 Colorado.Check engine light on. Code 5th cylinder misfire. Rough idle. Decreased mileage per gal. Decreased power. Strong smell of.gasoline. Spark plugs already replaced. … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
I am looking for a downloadable engine wiring harness
I am looking for a downloadable engine wiring harness diagram … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Engine light went on, and checked out diagnoses registers
Engine light went on , and checked out diagnoses registers P0303 cylinder 3 misfire detected , what do you recommend … read more
Ron Z.
Ron Z.
- Chevy Tech -
Vocational, Technical or Trade Scho
2,734 satisfied customers
Need timing sprockets on a 2.8 engine crank and camshaft.
need timing sprockets on a 2.8 engine crank and camshaft … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
On a 2005 Chevy diesel with a duramax engine what is the
On a 2005 Chevy diesel with a duramax engine what is the belt routing and where do all the belt pulleys go… read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,289 satisfied customers
Check engine light is on. Stay on. 2004 cavalier. Just
check engine light is on JA: Does the light stay on, or does it blink? Customer: stay on JA: What is the model/year of your Chevy? Customer: 2004 cavalier JA: Are you fixing your Cavalier yourself? Wh… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
The engine is not switching back and fort between v4 and v8.
The engine is not switching back and fort between v4 and v8. It is stuck on v8 … read more
GM Tech (Cam)
GM Tech (Cam)
Chevy Technician
Vocational, Technical or Trade Scho
15,289 satisfied customers
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
7,336 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
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
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
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
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