Question about 1991 Ford Ranger Supercab

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Engine sputter, my Ranger will not exceed the speed of 35mph. Engine begins to sputter at 20mpg. Replaced Timing Chain, cleaned Injectors, plenum, Mass Air Flow body. Replaced o-rings on injectors.

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Have you replaced the fuel filter?

Posted on Jun 01, 2010

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1 Answer

Struggle to pick up speed, jerks and jumps


With the milage your vehicle has , I would assume the timing chain is stretched. To check timing chain, take off the distributor cap, turn engine by hand clockwise till the distributor rotor begins turning. When you stop turning it start to turn back the opposite direction while watching the rotor, there should be no delay between the time you start to turn engine,and the time the rotor begins to turn. If there is any delay, then the timing chain needs to be replaced.

Mar 17, 2014 | Chevrolet Astro Cars & Trucks

1 Answer

What could cause my car to begin to struggle when i go over 70mph


55 is the speed limit, not 70. however, your timing belt / chain is worn or stretched , your killing your engine, it will get worst, until its replaced.

Mar 03, 2013 | 1999 Chevrolet Cavalier

3 Answers

Starts to run rich after 8 miles. sputters and loses power. i have replaced the filter, pump and fuel pressure valve, runs much (90 %) better but will sputter and blow black smoke for a few seconds....


Is there an engine light on? What condition are the spark plugs in? After 8 minutes, the engine is most likely up to operating temperature, therefor would be in closed loop, getting info from the o2 sensors and air temp, coolant temp sensors. One of these sensors could be causing an issue. Also, have you tried to spray out the throttle body with an intake cleaner to remove build up? How many miles are on your Ranger?

Sep 26, 2011 | 1988 Ford Ranger

1 Answer

My 98 Toyota Camry V6 LE has 120,000 miles on it and runs great. However, lately I have noticed it sputters ever so slightly on the highway. right about 60 MPH. If coasting or accelerating it is fine. ...


Being that you have a 1998 Toyota Camry, these cars are fuel injected and shouldnt need the gas pedal depressed to feed fuel to your engine. It's possible you may have a dirty fuel pump or dirty injectors. Here are some possible steps (cheapest in $) so follow these in order to spend less money.
- Run some Lucas Fuel System Cleaner (green cap bottle), do two treatments of that in your gas tank and see if that makes a difference. Dirty lines and clogged injectors are caused by cheap gas and or constantly running on Empty thus allowing fuel pump to pick up sediment from bottom of gas tank.
- Sputtering could also be worn spark plugs (too big of a gap) and or faulty spark plug wires or both.
-Timing chain issues usually occur if you hear a constant vibration near the top of the engine.
-Transmission issues would be having trouble putting the car in certain gears, or the transmission stick does not sit in gear properly (slippage).

Just some suggestions that may help with your problem.

Feb 14, 2011 | 1998 Toyota Camry

3 Answers

Misfire code, rough idle, full tune up complete, crank sensor replaced, intake replaced, injector test good, exhaust clear no codes other than misfire, trim lean once


The black soot on the plugs means that you are running extremely rich. The fuel injectors ma test good electricly, but they are notorious for leaks. The spider-looking thing sandwiched between the plastic intake plenum and the intake manifold gets cracks in it's "legs" and leaks fuel ito the plenum area. The fuel pressure regulator is also housed in this same assembly. if the diaphram in the regulator gets a pinhole in it, it also leaks fuel into the plenum area, causing all kinds of erratic idleing, black smoke from the exhaust, and will cause your fuel trims to drop into the negative 20s.

There is a technical service bulletin covering this subject. This procedure outlines the steps required to replace the existing Central SFI Fuel System with a new MFI (Multiport Flexible Injection) Fuel System.

It is removing the injectors which are all housed in the center body of the injector assembly and replacing them with a new version where the injectors are located where the ols "poppets" used to be in the intake manifold ports. The picture below is for a V-8 engine that is covered by the same TSB.052d4ba.gif
The poppets and the pressure regulator are available individually to fix your existing fuel injection system, but I gave up on that after replacing several poppets only to have them come back in a few months with another popet line broken. I recommend replacing the whole assembly with the new and improved version. My customers have told me after doing this that the engine never ran that smooth when it was new.

The GM part number for the new injector assembly for your V-6 engine is 12568332 it is also now available at several aftermarket parts outlets.

As for the timing chain solution posted by doodieman200, all I have to say is that I have enough fingers on one hand to count all of the failed timing chains I have replaced on these engines. If you don't have a cam/crank sync code, the timing chain has definitely not slipped a tooth.

Oct 18, 2009 | Chevrolet Blazer Cars & Trucks

2 Answers

Spit & sputter


Check the fuel injectors and your ignition coil!!

Jul 24, 2009 | 1993 Ford Ranger SuperCab

1 Answer

Engine bogs down at 55mph. ive replaced the entire distributor and components. new plugs wires cap rotor fuel pump fuel lines,,,everything. but it stil bogs at like 55-60mph. even replaced fuel filter and...


check you vacuum advance for the disrtibutor , it maybe advancing , throwing your timing off at high speeds. Also check fuel injectors they may need cleaning throwing off the fuel to air ratio.

Jul 10, 2009 | 1983 Chevrolet K2500

3 Answers

2001 Ford Ranger V6 timing chain


Hello;
The Ford motors are pretty good. I had 280K on a 2.9 V-8 that only needed the oil changed every 3K. Unless you have fluctuatuation in the timing then you should be ok.
These engines use a chain rather than a belt and have excellent life.
Thanks;
Rich RPM Northwest

Jul 01, 2009 | 2001 Ford Ranger Regular Cab

1 Answer

I have a 1990 Honda Accord. 5 speed 255,000 mi


you have a sensor acting up on your motor have the code read at any shop for about $25 and they will tell you exactly what sensor is going out and needs to be replaced

Mar 22, 2009 | 1990 Honda Accord

1 Answer

ENGINE SPUTTER AND DIES ON ACCELERATION


check your fuel filter, take an air compressor and blow air through the "in" end if no or little air is coming through then just replace the filter, if fuel filter is ok then try a fuel additive to clean your injectors which are a very common problem when the engine gets gunky build up on them

Oct 01, 2008 | 2002 Chevrolet Monte Carlo

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