Ford

Have Ford questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I have a 1994 Ford F-150, 4.9L 6cyl. engine. The engine has…

I have a 1994 Ford...
I have a 1994 Ford F-150, 4.9L 6cyl. engine. The engine has a miss and I am getting a 332, and a 334 code indicating EGR issues. I have changed EGR valve, which was bad, EGR position sensor, as well as the EGR solenoid and still no difference. Changed vacuum hoses, no change. No clue at this point. Need help.
Show More
Show Less
Ask Your Own Ford Question
Customer reply replied 9 months ago
Also, engine power is significantly diminished on acceleration and/or under a load
Answered in 21 hours by:
11/20/2017
Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,318
Experience: Automotive Instructor at Palm Beach State College
Verified
Hi my name is***** you do a key on engine off test is the codes in memory or a hard fault. Do you get 111 first then the 332 and 334?
Ask Your Own Ford Question
Customer reply replied 9 months ago
I do get a 111 code. Have disconnected battery for 20 min. Have driven truck a couple hundred miles with no change in function or codes.

The codes point to a clogged exhaust system like a bad catalyst. This would cause the loss of power and EGR codes for low EGR flow. Can you have the catalyst checked to see if it is blocked or rattling inside pipe indicating it is blocking exhaust flow.

Ask Your Own Ford Question
Customer reply replied 9 months ago
Will see if I can locate someone with a gauge.

Are you talking about a gauge to measure exhaust back pressure at the O2 sensor?

Ask Your Own Ford Question
Customer reply replied 9 months ago
I've never had a catalytic converter checked. Assuming exhaust pressure would be lowered. Am ignorant.

You can go to any exhaust shop to have the back pressure tested to see if converter is causing excessive back pressure on engine and low power and EGR codes.

Ask Your Own Ford Question

My goal is to give you the best experience possible! I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Ask Your Own Ford Question
Customer reply replied 9 months ago
Ok. Thanks

You are welcome.

Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,318
Experience: Automotive Instructor at Palm Beach State College
Verified
Jaybird61 and 87 other Ford Specialists are ready to help you
Ask your own question now
Customer reply replied 8 months ago
Sorry it has taken so long to get back. Many complications.
Catalytic converters were an issue and have now been replaced. Prior to contacting you I also replaced the following: plugs, wires, distributor cap, air filter, fuel filter, ear valve, egr solenoid, egrc position sensor, and pcv valve.
I still have the miss and power is still lacking though and now I have a 334 code.

If you are getting a 334 this means the EGR sensor is reading a higher than normal voltage and this may be caused by a piece of carbon stuck in the EGR. You will need to remove the EGR and look inside to see if valve is held open partly by a piece of carbon that broke loose from engine and got in valve. This will cause rough running. For the loss of power you should recheck to see if you can advance the distributor to get more power.

Ask Your Own Ford Question
Customer reply replied 8 months ago
Cleaned egr valve even though valve appeared clean. No change
Customer reply replied 8 months ago
The miss is constant from idle on up by the way.

Have you had the fuel injectors cleaned professionally and the fuel pressures checked to make sure it is within specifications?

Ask Your Own Ford Question
Customer reply replied 8 months ago
Fuel pressure checked out. Have not cleaned injectors

If you have excessive carbon buildup on the valves and injectors are partly plugged and also adjust the ignition base timing with timing plug removed to 14 degrees before top dead center will increase power.

Ask Your Own Ford Question
Customer reply replied 8 months ago
I still have a 334 code.

Code 334 is for a problem with computer seeing the egr partly open. This can be from a stuck open egr valve or the sensor is not getting correct sensor readings to computer.

Ask Your Own Ford Question

A scan of the computer data is needed to see if the computer is seeing the higher sensor reading and verify readings at sensor to see if it is in wiring or connections or sensor itself.

Ask Your Own Ford Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a ford mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Jaybird61 Your Own Question
Jaybird61
Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,318
2,318 Satisfied Customers
Experience: Automotive Instructor at Palm Beach State College

Jaybird61 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:

AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on.

Rich DUSA

Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me.

MollyUSA

I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service.

Jason V.Kirkland, WA

I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there.

BRNew Jersey

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

< Previous | Next >

Meet the Experts:

Ron

Ron

ASE Certified Technician

25,182 satisfied customers

23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs

Chris (aka- Moose)

Chris (aka- Moose)

Technician

29,223 satisfied customers

16 years experience

John Mc

John Mc

Ford Technician

5,495 satisfied customers

19 years Ford Lincoln Mercury experience

Chuck

Chuck

ASE Certified Technician

1,685 satisfied customers

33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Cam

Cam

Journeyman Automotive Technician

10 satisfied customers

GM Grand Master Technician 2007. 14 years Automotive experience.

Mike V.

Mike V.

Auto Service Technician

1,591 satisfied customers

25 years experience on all makes and models, Licensed NYS Inspector.

Richard

Richard

ASE Certified Technician

1,524 satisfied customers

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

< Previous | Next >

Related Ford Questions
After recently having a cracked exhaust manifold replaced at
After recently having a cracked exhaust manifold replaced at local ford dealer, I get a check engine light that indicates insufficient exhaust gas flow. I have had the EGR valve replaced but the probl… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
I have a 1995 holiday rambler vacationer with a 460 ford.
I have a 1995 holiday rambler vacationer with a 460 ford. The motor runs good when it is cold. When it warms up it misses and check engine light comes on. What could cause this? I have changed o2 sens… read more
Reggie Whiddon
Reggie Whiddon
Shop Foreman
Vocational, Technical or Trade School
157 satisfied customers
1997 Ford F-250: 4x4..dtc 334, 327, 126, 172, 542, 632 codes
I have a 1997 Ford F-250 4X4 5.8L. It has DTC 334, 327, 126, 172, 542, 632 codes what are they.… read more
chris
chris
Ford tech at a dealer
Associate Degree
2,764 satisfied customers
1992 ford f-150: egr valve..die..same but runs fine disconnected
i have a 1992 ford f-150 have to leave vacuum hose on egr valve off or it will die, already replace the whole egr and senor on top cleared the codes but no luck still acting the same but runs fine dis… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
1994 ford f150: evap..drove..lost power momentarily and than picked
how do i repair a code 334 on a 1994 ford f150 5.0l replaced egr vale - evp sensor evap sensor. drove vehicle 94 miles and lost power momentarily and than picked back up.… read more
Shawn
Shawn
Self Employed
Vocational, Technical or Trade Scho
3,663 satisfied customers
1995 ford f 150: runs good..backfires..the accelerator..throttle
My 1995 ford f 150 5.0 runs good when you first drive it but once you drive for a while it starts to have problems.. when you stop at a light and take off it wants to bog down and sometimes backfires.… read more
Tim West
Tim West
Service Manager
Computer/ Automotive certifications
16 satisfied customers
I have a 94 tuarus 3.8L which studders during acceleration..ERG
I have a 94 tuarus 3.8L which studders during acceleration. I checked for codes and it give me a 332 code "insufficient ERG flow". Could you tell me were to go next to fix this problem? Customer… read more
ase_master327
ase_master327
Owner & Student
High School or GED
3,214 satisfied customers
1995 7.5 L v8 Ford 460 E350. Check engine light comes on. codes
1995 7.5 L v8 Ford 460 E350. Check engine light comes on. codes will not clear via cross battery leads nor code reader. Code is for open egr valve stuck open. Is it the solenoid or the actual egr need… read more
Dieseljunky2
Dieseljunky2
Locomotive Mechanic
Ford Certified Technician
310 satisfied customers
Ford: egr code coming..hooked..9mpg, poor acceleration...vacuum lines
EGR code coming up when computer hooked up. 9mpg, poor acceleration. Many many vacuum lines missing from Ford dealer engine swap (morons). Unplugged EGR vacuum line and plugged up. Any possible help o… read more
RJ
RJ
Ford Tech
High School or GED
1,573 satisfied customers
1994 Ford F-150: air box..breather..no cylinder walls scores..rings
1994 Ford F-150 4.9l Oil in air box coming into crank case breather Bottom end redon no cylinder walls scores or bad rings. What do you think this is… read more
rpmdiag
rpmdiag
High school
7,881 satisfied customers
2000 ford f-150: something wrong with my evr circuit relay and i dont
Hello my name is XXXXX XXXXX i have a 2000 ford f-150 and i ran it through the computer and it says that there is something wrong with my evr circuit relay and i dont know what that is so could u tell… read more
Larry
Larry
Ford Senior Master Tech.
Vocational, Technical or Trade Scho
16 satisfied customers
f-150: pludger and it is electrical only where is this located
on a1996 f-150 with 300 6cly the egr system has three parts i have located the egr valave and sensor there is another valve with pludger and it is electrical only where is this located… read more
Dennis
Dennis
Senior Master A Technician/Shop Foreman
Vocational, Technical or Trade Scho
758 satisfied customers
1995 Ford: with a 5.0...scan tool I borrowed indicated
I have a 1995 Ford 150 with a 5.0. I just changed the oygen sensor because the engine was "bogging down" when cold. The scan tool I borrowed indicated that the sensor was taking a long time to come on… read more
Tim
Tim
Ford Senior Master Technician
Vocational, Technical or Trade Scho
997 satisfied customers
Limit: throttle..voltage..I replaced my EGR valve and position sensor
My check engine lights kept come on and off. I bought a computer and it gave me DTC codes of 181 ( fuel system at rich adaptive limit, at part throttle system lean bank 1) and 334 (EGR Valve position … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
25,182 satisfied customers
1992 ford mustang lx: 4cyl..auto trans..car wont shift into overdrive.
I have a 1992 ford mustang lx with 42k miles. It has the inline 4cyl engine and auto trans. The car wont shift into overdrive. Fluid level is ok. Shifts 1-3 fine. There is a 3 wire pig tail on the int… read more
Vincent
Vincent
Automotive Technician
High School or GED
808 satisfied customers
1994 Ford Ranger: EGR Valve..runs good..miss at mid rpm when warm
1994 Ford Ranger EGR Valve Code 332 Truck Computer F47F-12A650-AEA (CAMO) Having trouble with code 332 Insufficient EGR flow detected not going away. Disconnected battery to clear codes and getting 33… read more
Vincent
Vincent
Automotive Technician
High School or GED
808 satisfied customers
1994 Ford Ranger: solenoid..sensors..EGR valve to exhaust header
1994 Ford Ranger 2.3 Code 332 Will Not Go Away! Truck Computer F47F-12A650-AEA (CAMO) Disconnected battery to clear codes and getting 332 code Insufficient EGR Flow detected Replaced PFE Sensor, EGR v… read more
ase_master327
ase_master327
Owner & Student
High School or GED
3,214 satisfied customers
1993 Ford F-150: 4X4..the EGR valve..under load..cruise control
I have a 1993 Ford F-150 302 AOD automatic trans, 4X4. I have a miss that a local mechanic has diagnosed as the EGR valve is opening at low RPM (1000-1500) without being under load. It seems to have a… read more
Autotechguru644
Autotechguru644
Associate Degree
232 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