89 Ford Festiva fuel injected idles fine in park die in gear set for a year bad gas put Premium and fuel treatment in it new distributor cap and button im at a loss dont know much but not afraid to w

Asked by Jul 17, 2015 at 09:12 PM about the 1989 Ford Fiesta

Question type: Maintenance & Repair

14 Answers

254,385

Plugs and wires changed recently? Check for vacuum leaks? Check engine light on?

Getting good fire vac looks and sounds good thre is a spot taped but not leaking and not check engine light

if I hold the pedal just rite it runs in gear

41,195

I would also replace the fuel filter. Buy some throttle body spray and spray down the inside. Check the air filter and make sure there's not a mouse nest under the air filter. Post back with results.

410

Fire it up.. hold the brake put it in gear and open the throttle. . In other words load the engine down.. see if it stutters or misses.. I'm thinking you got a fuel starvation issue.. with ought proper diagnostics this may be difficult to diagnose.. what color were the plugs? Black? Or amber? Or white? Keep in mind black is rich. Amber optimal more white to lean.

410

Don't just throw parts at er boys.. let's diagnose the issue it's cheaper. Process of elimination.. u may not have needed the cap and rotor. Or plugs.. there's a 100 bucks gone and u still have the issue. Right?

Thank you all i will be working on it tomorrow all day so i hope one of these work

It stutters And misses in gear

410

Can you get access to a fuel pressure test kit.. ? If you got spark assuming the timing is correct. Then your either over fueling or under fueling..

410

Disconnect your coolant temp sensor .. this will put the pcm into limp mode. It will trigger open loop operation or cold start up procedure also it will shorten the injector pulse width causing a rich mixture. Repeat my first test . Load the car down in gear and see if u get fuel cut.. Second does it hesitate when u open the throttle or closed. Open is a sign of under fueling..example.... if your car is running rich ideally when u open the throttle it should smooth out as u allow more air in.. if it's under fueling then it will run ok at idle but as soon as u allow air in it will trigger a lean mix. Then your pcm will try to compensate and shit gets bad.. I usually just watch the Mas tps and up stream o2 on an oscilloscope. . But you don't have my equipment.

410

Also and this is not a fix.. nvr use this as your fix.. only a test.. take a pair of needle nose vice grips snug them onto your return fuel line. Don't pinch the line . Just close it a bit. This will help diagnose a faulty fuel pressure regulator. It will raise the fuel pressure in the rail.

410

Haha my god boys this is like working on a carburetated car.. i wish u could get to my shop. I could diagnose this in minutes.

Where is your shop

410

Forest ontario in canada lol.. eh!!!

Your Answer

Fiesta

Looking for a Used Fiesta in your area?

CarGurus has 16,471 nationwide Fiesta listings starting at $2,500.

ZIP:

Ford Fiesta Experts

  • #1
    Daniel Bennett
    Reputation
    90
  • #2
    Anwar_cpt_sa
    Reputation
    80
  • #2
    Js08016
    Reputation
    80
View All

Related Models For Sale

Used Honda Civic
817 Great Deals out of 73,280 listings starting at $1,400
Used Toyota Corolla
918 Great Deals out of 57,563 listings starting at $1,488
Used Ford Mustang
732 Great Deals out of 38,316 listings starting at $895
Used Volkswagen GTI
127 Great Deals out of 8,674 listings starting at $2,400

Used Cars For Sale

2017 Ford Fiesta For Sale
9,354 listings starting at $8,160
2016 Ford Fiesta For Sale
43 Great Deals out of 2,499 listings starting at $5,500
2015 Ford Fiesta For Sale
22 Great Deals out of 1,302 listings starting at $6,000
2014 Ford Fiesta For Sale
35 Great Deals out of 1,297 listings starting at $4,887
2013 Ford Fiesta For Sale
18 Great Deals out of 833 listings starting at $3,888

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.