Ford

Have Ford Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Ford
This answer was rated:

1988 thunderbird: turbo..coupe..gauge..AC compresser engages either

I have 1988 thunderbird turbo...
I have 1988 thunderbird turbo coupe with two problems: Primary cooling fan doesnt kick on till engine is almost to the top of the gauge. Doesnt come when AC compresser engages either. Second problem When vent is open and when driving and the engine builds boost the air starts to come out defrost and foot vents. off boost it goes back to dash vent. Thanks for any help you got.
Show More
Show Less
Ask Your Own Ford Question
Answered in 41 minutes by:
5/28/2009
Chuck
Chuck, ASE Certified Technician
Category: Ford
Satisfied Customers: 2,101
Experience: 33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
Verified

What type of climate control system do you have on this vehicle? Is it electronic(digital display) or is it a manual system with knobs to set the controls?

 

On the cooling fan have you checked for any trouble codes in the EEC?

Has there been aything wired into the system or is everything totally stock?

 

I am at the shop now but I will carry the shop manual and wiring diagrams home with me and check back later.

Ask Your Own Ford Question
Customer reply replied 8 years ago
AC is manual and the heater core was replaced by previous owner, when you turn on ignition you hear flaps and doors moving in dash. I dont have any way to check codes on EEC. What could I buy to check that?

Ok the problem with your heating and cooling fan is the primary cooling fan. It is controlled by the Integrated Controller Module located in the RH front of the engine compartment, right near the EEC self test adapter at the front of the strut tower.

This houses all of your relays,Primary fan,secondary fan,ECF relay, Fuel pump, and AC clutch.

Now how this works is power is supplied on pins 3 and 4(Y wires) to the relay. Ground to the coil side of the relay is provided on pin 17(PK wire). When this wire is grounded by the PCM or by the fan control ac pressure switch this energizes the coil which then creates a magnetic field which then pulls the switch side of the relay closed. Now power will flow thru the switch side of the relay and leave the controller on pins 6 and 7(BR/O wires) and goes to the primary fan. Now get a 12V test light and make sure you have voltage to the Y wires. If that is ok then check the BR/O wires with AC on. If you have power here then go to the fan and make sure it is getting all the way there on that wire. If you have it at the fan then hook you test light to the positive battery cable and then check the BK wire at the fan and make sure it lights to prove out the ground.If it does then your fan is bad.

Now if you do not have power on the BR/O wire check the PK wire at the controller with your test light hooked to battery positive and then turn on the AC and see if it lights to prove out the ground on the coil side of the relay. If you have it here and do not have power on the BR/O then the relay is bad and the controller would have to be replaced.

 

 

Now on the problem with your ac blowing thru the defroster under load or boost. Defroster is the default postion for no vacuum. Of course under boost you have no vacuum however you have a vacuum reservior located in the right fender well. I suspect either you have a leak at the reservior or in the vacuum lines from it. I can not remember for sure but the picture in the shop manual it appears you will have to remove the right front wheel and drop the plastic liner down and it should be behind this. Check it good for a vacuum leak and trace the vacuum lines from it,one should go to the intake manifold and the other should go thru the firewall near the heater core hoses.

 

 

Chuck
Chuck, ASE Certified Technician
Category: Ford
Satisfied Customers: 2,101
Experience: 33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
Verified
Chuck and 87 other Ford Specialists are ready to help you
Ask your own question now
Ask Chuck Your Own Question
Chuck
Chuck
Chuck, ASE Certified Technician
Category: Ford
Satisfied Customers: 2,101
2,101 Satisfied Customers
Experience: 33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance

Chuck 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

24,155 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

27,937 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

2,101 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.

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.

Mike V.

Mike V.

Auto Service Technician

1,335 satisfied customers

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

< Previous | Next >

Related Ford Questions
Leak antifreeze on top of engine. They are old but wont hold
leak antifreeze on top of engine JA: How old are the hoses? And have you tested the actual mix of your coolant? Customer: they are old but wont hold water JA: What is the model/year of your Ford? Cust… read more
Jaybird61
Jaybird61
Master Automotive Mechanic
1,886 satisfied customers
Car runs well, engine purrs, so don't think it's an engine
Car runs well, engine purrs, so don't think it's an engine efficiency issue. Odometer typically always showed approximately 390-410 miles to empty when gas tank was filled up. All of a sudden, it only… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
27,937 satisfied customers
I believe that i need to replace the engine coolent
i believe that i need to replace the engine coolent temperature switch on a 2008 f-250 6.4 powerstroke and need to know where it is and how to get to it … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,155 satisfied customers
My engine is a 70 302, was a 2bbl carb, now a 4bbl. engine
my engine is a 70 302, was a 2bbl carb, now a 4bbl. engine fires great, but after driving awhile, it wants to stall at idle slow braked … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
Are you able to provide quick help for engine not turning
Hi, are you able to provide quick help for engine not turning over? … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
27,937 satisfied customers
Temp gauge spikes (quickly) but engine is not overheating.
Temp gauge spikes (quickly) but engine is not overheating. Turning off ignition for a few seconds resets the gauge -- but it may spike again in a few minutes or in two weeks! It's always an adventure.… read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,155 satisfied customers
Engine was cleaned and afterwards car started to run rough
Engine was cleaned and afterwards car started to run rough and then service engine light came on Scanned it and has P1151 code … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
24,155 satisfied customers
Service engine light just came on and engine stalls at an
Service engine light just came on and engine stalls at an idle … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Engine will spin but it won't start. No there's no
engine will spin but it won't start JA: Have you checked the battery, particularly the terminal connections? Are they corroded? Customer: no there's no corrodison JA: What is the model/year of your Fo… read more
Kenny Z
Kenny Z
Ford Senior Master Technician
High School or GED
16 satisfied customers
2006 f 350 have to rev engine high to keep engine from
2006 f 350 have to rev engine high to keep engine from stalling when engaging clutch. Clutch does not engage smooth … read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
27,937 satisfied customers
2012 FordFusion - start engine in park horrible jet engine
2012 FordFusion - start engine in park horrible jet engine roar starts I'm so scared I turn off car. Checked at ford dealer. No history found. I can't drive it from my terror. Husband has driven it wi… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Replace the gas engine on a 2004 ford escape hybrid. Engine
replace the gas engine on a 2004 ford escape hybrid … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
The check engine light came on, It stays on. It was on at
We have gone to a service centre and told they could not look at it until probably Tuesday next week. We are travelling and away from home. … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
Coolant leaks at rear of engine. Engine not run for last
coolant leaks at rear of engine. Engine not run for last several days so no pressure in engine. … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
6 Bucs 2012 f250 6.7 engine. truck has the check engine on,
6 Bucs 2012 f250 6.7 engine. truck has the check engine on, and the following codes. P20BA, P026A, P0087. I changed fuel filters and drove the truck from 0 to 70mph it picks up and works fine, let spe… read more
Chris (aka- Moose)
Chris (aka- Moose)
Technician
Vocational, Technical or Trade School
27,937 satisfied customers
2011 F150, rebuilding engine 3.5 ecoboost. Engine started
2011 F150 , rebuilding engine 3.5 ecoboost. Engine started well and ran very smooth. After several minutes run, oil pressure dropped off at idle. Low oil pressure warning comes on, If RPM's increase, … read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
Stopped for gas, when i started the engine the check engine
stopped for gas, when i started the engine the check engine light came on and the air conditioning stopped cooling. Noticed that the engine idled rough and slower, stalled a couple of times. suspect t… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Engine shut down driving in a heavy rain storm. Engine
engine shut down driving in a heavy rain storm. Engine cranks doesn't start. water in fuel and fuel filter show on dash panel while cranking engine. … read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 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