Question about 1988 Ford Ranger

1 Answer

How to troubleshoot bad EGR circuit on 1988 Ford Ranger Injected

I've had this little manual 5 spd four banger for about six months. It has an intermittent problem from running fine to just cutting out and losing 1/2 power then the next minute it is running fine. Ichanged plugs wires,cap and rotor, fluids, had a new exhaust put on piping from the cat back. Exhaust man says the cat is ok. Had codes read, possible ignition module or EGR. Ireplaced the module. Still acting up. Is the EGR a common problem that would cause these symptoms?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has achieved Level 3.

  • Ford Master
  • 946 Answers

Have you checked for vacuum leaks at all lines and going to the MAP sensor? It also has a TPS(throttle position sensor) and CPS(crankshaft position sensor),I think.
I'm thinking vacuum leak or TPS. don-ohio

Posted on Jun 05, 2017


6 Suggested Answers

  • 2 Answers

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

A 6ya expert can help you resolve that 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.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 92 Answers

SOURCE: Ford Ranger problem

pls ,check choke actuation, choke pulloff,ect.

Posted on Oct 08, 2008

  • 78015 Answers

SOURCE: 1995 Ford Bronco 172 EGO not switching lean bank1- jerks when run

Have u checked for vacuum leaks or poss leaking EGR valve? use carb spray around the upper intake manifold where it bolts to the lower manifold, spray vacuum lines where they are connected to the engine vacuum ports, the idle speed will change if u hit a leak, as far as the EGR valve goes see if it gets hot at idle, if it does it is leaking, if all checks ok replace the O2 sensor, but i suspect u will find a leak at the upper intake plenum.

Posted on Jan 10, 2009

  • 783 Answers

SOURCE: have 2005 ford freestyle. i towed to my shop,

Measure the exhaust back pressure. Do you have an old O2 sensor? If so just break the ends off of it so that just the tube is left sticking thru the center. Install it in one of the O2 ports and hook a vacuum/pressure guage to it. Should read les than 1 psi at idle and no more than 3 to 4 psi at WOT.

Posted on Feb 19, 2009

  • 13 Answers

SOURCE: lack of power

These engines are pretty sensitive to the spark plug gap. Try replacing the plugs and making sure the gap is correct (even if they're pre-gapped. They're typically 0.055", but there should be a sticker under the hood that states the actual gap.

Posted on Jun 07, 2009

  • 14585 Answers

SOURCE: 1988 Ford Ranger Fuel Injected

Check the compression? You replaced all the items to make it run. remove the air filter and check? If compression is below 90 then bad rings or valves. Check the fuel pressure. to see if you have bad rings with low compresion spray oil in cylinders, if pressure goes up it's the rings. If nto it's the valves.Try these and let me know.

Posted on Nov 10, 2010

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

1988 ford ranger ext cab 4x4 2.9L xlt manual has no spark to coil.turns but does not fire.The auto parts store tested the coil and said it was still good.where to next

USUALLY IN THIS TRUCK THE IGNITION COIL GOES BAD,AND DOES NOT START (NO SPARK) (BUT WHEN THE IGNITION MODULE GET BAD WON'T START ) the ignition module is located at the side of the distributor by two bolts it is a special torkx little wrench to removed without take the distributor out autozone and oreallys has this tool. the module is a grey item with six wire connector. when you removed the little bolts pull down the module to disconnect the lines at the distributor you will see.

Feb 25, 2018 | Ford Cars & Trucks

1 Answer


the fuel pressure regulator is not functioning right and it's letting to much fuel in to the injectors or the fuel return line to the canister or from the canister back to the tank is kinked or blocked

Feb 17, 2015 | 1988 Ford Ranger

1 Answer

Does any of the relays have to do with it missing fire?

I would say no

Do you understand how a relay works & why they are there?

Misfires are ignition problems,vacuum leaks that lean out fuel mix,
bad egr valve & others

Nov 29, 2012 | 1988 Ford Ranger

1 Answer


How do you program the key to a 2001 Ford Focus? 1. Turn the ignition from off to run four times in six seconds. 2. Turn the ignition to off. The car will chime to confirm that you've done everything correctly so far. 3. Press any key on the first remote you're programming. Perform this within 20 seconds of step 2. The car will chime to confirm programming. 4. Repeat step 3 with each additional remote.
great diagnostic tools

Nov 08, 2012 | 2003 Ford Ranger Regular Cab

2 Answers

1988 bronco II vapor locking?

Just a guess here, but check your ignition coil. Make sure it's mounted nice and tight to the block. a bad ground on a coil will mess with you bad. other than that, I'd check and replace your fuel filter.

Jun 16, 2012 | 1988 Ford Bronco II

1 Answer

1988 ford ranger push button four wheel drive an it wont engage all the wires are good it just clicks when u push the button.. what should i look for to make the four wheel drive work again it wont...

Start out with buying yourself a $25 book from the Parts House. The I would go to the front HUBS, secure & safety vehicle before you do anything, Clean, Inspect, Lune & Repair front Hubs as required, get the brakes while you're there. Check your drive line, axles, u-joints etc. Clean , repair , replace as needed. Check for Tranfer case Operation. Is there power going to the front Axle when 4WD is engaged? do you feel a change when you engage the Transfer Case? Have you checked the Power on the circuits? Have you Manual or Auto-locking Front Hubs? Answer all those Questions & read before you do anything.

Nov 03, 2009 | 1988 Ford Ranger

1 Answer

91 Ford Ranger XLT, 4 cyl, manual 5 spd. Engine

most likely right on top of steering colum around have way down

Oct 07, 2009 | 1992 Ford Taurus

1 Answer

Need vacuum diagram for a 1988 ford ranger

Go to auto zone through this link And register for free then click select vehicle, add your vehicle and go to driveability and Emissions controls, than go to vacuum diagrams.

May 01, 2009 | 1988 Ford Ranger

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

81 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

78010 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers


Level 3 Expert

5651 Answers

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

Answer questions

Manuals & User Guides