Is it the Fuel Filter, Fuel Pump or Wiring?

Asked by Mar 08, 2014 at 06:43 PM about the Ford Thunderbird

Question type: Maintenance & Repair

My 1992 T-Bird, was doing really good until I got it smog, had an o2 sensor replace and an egr sensor. Went to a Valero gas station then it started running horribly, jerking, missing, I burned out the Valero gas and put in my regular 76 reg. gas... it ran okay for a while then again Valero, now my car is stranded..it went from bad to worse... I have to pump the gas to make it work.. I read your other answers, but how to know for if it's the fuel filter, fuel pump or wiring?  And where are these located without the manuals , can you just answer please..  er.. thanks  lady Tbird

9 Answers

104,485

It only runs poorly on the Valero gas? If so I would not use it if possible. I have two older cars that only run properly on chevron gas. If I buy any other type of gas the performance drops considerably at times to the point where they miss and have hard to start issues.

2 out of 2 people think this is helpful.
83,505

Why would even go back if you had a problem not that long ago, you need to siphon out as much of the fuel you can get, put in a least 5 gallons of good fuel, add some octane 104 to the 5 gallons, change the fuel filter, it is located on the frame rail either close to the tank on the drivers side, it will be concealed buy red plastic cover held on by 2 8MM bolts and 2 plastic clips that will be supplied with a new filter, make sure they are in the box, after fuel filter is replaced turn the key on for 3 seconds then off for 8 seconds, do this a least 3 times, this will help flush the bad fuel out of the lines and be diluted by the good fuel in the tank, during this operation you should be able to hear the fuel pump run then stop, this is normal, then try to start the engine if it fires and runs it might be a little rough for a while until the bad fuel is purged, then fill tank with good fuel.

2 out of 2 people think this is helpful.
Best Answer
500

Chances are its not Valero gas...its the gas from that Valero station. Bad gas is nearly always traced to bad gas stations or tanker trucks more than the refineries. Water and contaminates make it into tanker trucks and underground tanks from cracks, bad seals and access points being left open. I have used Valero gas a few times while traveling and never had an issue. On the other hand, I used Speedway nearly exclusively for nearly 8 years without an incident...but the only "bad gas" I ever had was from a Speedway where filling up an empty tank got me 21 gallons of gas and 3 gallons of thick brown slop that would separate and settle under the gas. Consider gas stations the same as mechanics...find the ones you can trust and give them your regular business to they can stay in business.

2 out of 2 people think this is helpful.
125

Comment: Changed the egr sensor, without also changing the egr valve???

1 out of 1 people think this is helpful.

Fuel filter is on the pessenger side under the plate. Wires are under the rear seat, fuel pump relay is in the trunk on the driver side so is the fuel pump shut off switch behind the carpet. Do you hear the fuel pump come on at all?

2 out of 2 people think this is helpful.

Is that what the that fan noise is? I'm not sure.. on the passenger side under what plate? I thought is was alongside the tubing fuel metal hose?

This Valero gas station had all pumps closed except one opened, I thought that too was strange, but because I was on E I had no choice. Will running the car on E damage the fuel pump? Appreciate all the valid answers... the EGR sensor was replaced, but not the EGR valve didn't know I needed the valve, keep in mind the sensors were replaced to pass the smog and now I'm have problems.

You should hear a noise when you turn the key to the on position(all lights on the dash is on) If you don't hear any thing then the pump is not working. With that said on my 93 with a 5.0L the wire was twisted to gether from previous owner leading to the fuel pump.

1 out of 1 people think this is helpful.
104,485

Running a car out of gas will damage the fuel pump.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 93 T bird getting no hum from the fuel pump 6 answers

    My 93 T bird has been sitting for a couple of years. When it was last running (idling in an effort to keep parts in working order) it was left unattended for a short time and ran out of fuel. Now it t...

    1993 Ford Thunderbird

    -

    Maintenance & Repair

  • What are the characteristics of a bad O2 sensor in a 91 thunderbird SC? 2 answers

    ALL OF A SUDDEN ACTED AS IF IT WERE OUT OF GAS OR THE FUEL PUMP/FILTER WAS BAD.

    1991 Ford Thunderbird SC

    -

    Maintenance & Repair

  • 85 Thunderbird not getting gas 2 answers

    i have a 85 Thunderbird thats not getting gas to the carb. it has a new gas tank, new fuel pump, the fuel pump relay is good.i dropped the tank to check the pump and did a dry test on it and it worke...

    1985 Ford Thunderbird

    -

    Maintenance & Repair

  • Fuel Leak on 97 Tbird near tank 1 answer

    Hi, I have a 1997 Thunderbird LX 4.6 V8. Today it developed a fuel leak. I parked up at work and when I came out later I could smell fuel in the car. I had a look around and under the car and I ...

    1997 Ford Thunderbird LX

    -

    Maintenance & Repair

  • Why would a owner wire a fuel pump directly to the battery? 2 answers

    fuel pump is wired directly to battery.

    1990 Ford F-150 XLT Lariat SB

    -

    Maintenance & Repair

Thunderbird

Looking for a Used Thunderbird in your area?

CarGurus has 1,101 nationwide Thunderbird listings starting at $6,995.

ZIP:

Search Ford Thunderbird Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford Thunderbird Experts

#1 oldtimer37
oldtimer37
Reputation 1,450
#2 Tom Demyan
Tom Demyan
Reputation 1,440
#3 tennisshoes
tennisshoes
Reputation 1,100
View All

Related Models For Sale

Used Ford Mustang
537 Great Deals out of 42,626 listings starting at $1,699
Used Chevrolet Corvette
275 Great Deals out of 20,443 listings starting at $3,688
Used Chevrolet Camaro
378 Great Deals out of 40,505 listings starting at $3,500
Used Ford F-150
3,005 Great Deals out of 207,341 listings starting at $1,000
Used Dodge Challenger
310 Great Deals out of 24,885 listings starting at $7,988
Used Pontiac Firebird
10 Great Deals out of 780 listings starting at $2,300
Used Mercedes-Benz SL-Class
66 Great Deals out of 3,116 listings starting at $4,000
Used Chevrolet Impala
907 Great Deals out of 35,161 listings starting at $1,700
Used Jeep Wrangler
502 Great Deals out of 18,397 listings starting at $2,500
Used Porsche 911
127 Great Deals out of 4,464 listings starting at $8,901
Used Dodge Charger
444 Great Deals out of 29,936 listings starting at $2,275
Used Mercury Cougar
235 listings
Used Chrysler Crossfire
13 Great Deals out of 376 listings starting at $2,995
Used Lincoln Continental
3,734 listings starting at $42,995
Used Jaguar XK-Series
59 Great Deals out of 785 listings starting at $3,950