Question about 1990 Ford F150

1 Answer

Truck running funny sometimes and other times running perfect.

My 1990 Ford F-150 5.0L 4X4 with 155,000 miles has an issue. A couple years ago I had my fuel regulator replaced because it was running crappy. Now it seems to run great at times and other times it seems to miss, have power loss and chug. It has a new fuel pump, filter, and spark plugs. Not sure what to do other than replace fuel regulator again because when I sniff next to the engine with the hood closed I can smell a lot of fuel and there are no leaks. seems like the regulator is dumping way more fuel than the engine needs and its causing it to run rough and have waves of power loss as I accelerate up to speed. Doesnt always happen. Its about 50/50 now. Any advice??

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 532 Answers

If the exhaust blows black when this issue starts,then probably a bad regulator,which the check engine light will come on then go off a few times telling you a code,oxygen sensors...if not,try replacing the throttle position sensor,its tough because its at the bottom of the throttle body,and the screws rust in and sometimes breaks,so the throttle body has to come off.you have to figure out where the gas smell is coming from at least,it could be blowing back into the air breather.also check the vacumn lines(green hose and red hose) on top for cracks.the red should be for the regulator

Posted on Dec 12, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1990 5.8, 74000 miles well maintained. Oil preasure drops off


Why are you running 10 - 40 weight oil. You might want to rethink this. As the miles go up the ware on parts goes up. So I would recommend a 5 - 20 or 5 - 30 high mileage oil. If the oil pump is that new and working properly then this will help with the pressure.

Nov 26, 2013 | Ford Cars & Trucks

1 Answer

1990 ford 5.8 liter truck idels funny and kinda sounds like it is missing but spark plugs look great and new wires did nothing only has 67,000 miles


Could be a long list of things including dirty injectors or a leaking EGR valve.
The coil could be weak or the distributor cap and rotor may be shorting to ground. Has the fuel filter been replaced ?
You'll have to go down the list and try to eliminate components to narrow down your options.
Does it happen all the time, only when you are accelerating, etc.

Sep 13, 2012 | Ford F-250 Cars & Trucks

1 Answer

Truck running funny sometimes and other times running perfect.


It sounds like you really take care of your truck,But being that it is a 1990 with the mileage you stated,The only thing that comes to mind about your problem,
Is the rubber "O" rings that seal the injectors,They are probably not soft anymore and that might be where your smell is coming from.this could also be your light miss or chug too,But if you do check them for hardness,really check the injectors over before you reinstall them,check the screen on the bottom to see if any rust particles are trapped in there from the fuel tank and lines.

Dec 11, 2009 | 1990 Ford F350

7 Answers

Should I use 10w30 or 10w40 oil


If you live in cold climate I would recommend 10w30 for winter use, it's a bit thinner and will start better. However if the truck is used hard, such as for towing loads I would use the 10w40. If you live in a warm climate I would use 10w40 all the time.

Nov 12, 2009 | 1990 Ford F150

1 Answer

1990 camry 190,000 miles yesterday when driving


With that many miles and years there are a lot of thoughts. If your tune up parts are old that would be the place to start; making sure there is no fouling of the plugs.

Sep 20, 2009 | 1990 Toyota Camry

2 Answers

Car won't run after rain or after it sits for a couple days


you need a tune up new plugs wires and cap an rotor

Nov 07, 2008 | 1990 Geo Prizm

1 Answer

1990 ford diesel non turbo


it sounds like your fuel lines aren't maintaining pressure and the angle is allowing too much fuel to drain out of the lines. i have the same issue with and older f350 diesel if i let it sit a while and it doesn't get started.

Jun 06, 2008 | 1995 Ford F350

Not finding what you are looking for?
1990 Ford F150 Logo

368 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

79865 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

fordexpert

Level 3 Expert

5687 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...