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What could cause a 1994 ford ranger to run rough and pop through the intake when first accelerating the engine is a 4.0 liter. Also new plugs, wires and ignition control module

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Sounds like you crossed one of the distributer wires. Go back and recheck them. If you didn't have this problem before you changed them then you definitely crossed your wires

Posted on Apr 09, 2015

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Start with the obvious. Was the ignition timing set correctly. Also check the vacuum advance.

Posted on Apr 09, 2015

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Jan 31, 2016 | Cars & Trucks

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Ive got a 1988 ford ranger,it strated to stall not run popped when tried to apply fuel,went bought fuel filter pump,install samething,pull voltage regulator plug truck runs fine, so go buy new alt with...


Interesting.
You may need a wiring diagram for the engine.
Unplugging the regulator turns off the alternator which should not affect the ignition system. Unless it is over charging somehow. Or the alternator load on the engine is causing a missfire to be worse.
Its possible you have a ground problem somewhere too.

Jun 29, 2012 | 1988 Ford Ranger

1 Answer

2004 Ford ranger rough idle at 1200 RPM. Hi, my ranger just came from the garage with no fix. It has 64000 miles and developed a sputter between 1000 and 2000RPM. Runs like hell and idle is fine , no...


Hello, I suspect the problem can be one of three things. An idle speed control Solenoid or a leak in the Intake system or bad valve runner operation. First, disconnect the accelerator cable at the Throttle connection. I am reading that you have a rough idle at 1200RPM and then that the idle is fine.

The idle is too high if it is set at 1200. By disconnecting the accelerator cable, you will find out if the cable is binding at low rpm. If the engine now idles slower with the cable off, you have found part of the problem.

The ISC, idle speed control, usually fits in a shallow well in the Intake, has a valve which routes extra air into the engine to smooth the idle. The valve shaft can be cleaned with WD40 and you can degum the passageway. Too much air at the wrong time can increase RPM and give the other controls fits trying to compensate, resulting in sputter.

A leaking intake manifold or manifold gasket can create the problems you describe. Use a hand spray bottle of water and mist the seams while the engine is running. A leak will draw in the water and change the RPM. Then fix the leak. Some 6 cylinder manifolds have 2 piece sandwich designs and the gaskets usually fail over time.

If you have the type of engine with intake runners, there are activating Pods which move rods underneath the Pods. Some have plastic clips which break and the rods fail to work after that.
Since the Electronics work, you will not get a check light. This defect sounds a lot like your problem because the Intake has certain flow designs to regulate power at different RPMs'. You are having problems only within a certain RPM range.

I hope my solution gives you new ideas on inspecting your engine for the problem.

Jun 02, 2011 | 2004 Ford Ranger

2 Answers

My 1994 Ford Ranger (2.3L, 2WD, Auto-trans) runs rough. I've put new plug wires, spark plugs and even changes out the dual ignition coils and the engine runs rough at idle and seems to be lacking power. ...


I suggest to get the codes checked so you're not chasing a moving target. You'll need to look online - check out the Ranger/Explorer forums - or get the Factory Service Manual (FSM) to get the technical info you're requesting.

GL,
Td

Aug 06, 2010 | 1994 Ford Ranger Supercab

1 Answer

Hi. i have a 94 ford ranger 4x4 with a 4 liter motor in it. The problem is that it is blowing the eec fuse when the car is under load. I replaced the fuse and the truck started up right away. I can rev the...


What your problem sounds like is a short in the engine harness. When the engine is under load it will rock slightly this can cause wires to rub. If the right wire rubs ground it will blow out your fuse. Follow your harness from the fire wall to the engine and look very closely for any rubbing of the wire loom.

Apr 20, 2009 | 1994 Ford Ranger Supercab

1 Answer

1994 ford ranger extended cab 6 cyl fuel injected 2 wheel drive automatic


This year of ranger had a few flaws, In one case, a break power booster was robbing the vacumm, you can test this by plugging it off and seeing the differance, but you will have limited brakes. This model year had a problem with a vacuum leak on the manifold. You can check these in many ways, but please don't use starting fluid. The rear of the manifold usually on the drivers side where it seals to the block.
Also, in 2 other cases a cracked head has gave me the same problem. It is caused from a loss of vacuum.

Jan 01, 2009 | 1994 Ford Ranger Supercab

1 Answer

Ignition wiring


firingorder6a.gif firingorder6.gif 1991-1994 2.9L and 3.0L Engines Firing Order 1-4-2-5-3-6 1995 And Later 3.0L V-6 With DIS Ignition System Firing Order 1-4-2-5-3-6
4.0L Engines Firing Order: 1-4-2-5-3-6 DIS Ignition System

Nov 22, 2008 | 1995 Ford Ranger Supercab

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