20 Most Recent 1990 Ford Ranger SuperCab Questions & Answers


Here is the routing for that setup. i hope this helps!!!

1990 Ford Ranger... | Answered on Sep 06, 2019

well this is your first request with fixya ----battery has a charge is it turning over and not starting --or not turning over --if turning over try spraying the carb with starter fluid if starts fuel problem --fuel pump --inertia switch --relay-fuel filter --////if no start electrical---//distributor--battery ignition -coil etc the following link shows how to check the inertia switch
How to Check Inertia Switch on Ford Vehicle Fuel Systems and this is link is a free online repair manual which can assist you with repairs
Free Online Auto Repair Manuals and Free Auto Repair Diagrams

1990 Ford Ranger... | Answered on Sep 30, 2018

Try changing the throttle position sensor. It varies voltage to change rpm and if it is wet and shorted it will set maximum rpm.

1990 Ford Ranger... | Answered on Jul 30, 2017

I think the problem is the torque converter or similar. Check fluid level and condition. If fluid smells burnt or is dark in color something internal is wrong. You said transmission was replaced do you have the paperwork? Either the transmission wasn't rebuilt correctly or the torque converter wasn't replaced. Read computer for codes.

1990 Ford Ranger... | Answered on Jun 01, 2017

find the faulty injector and fix it

1990 Ford Ranger... | Answered on Apr 13, 2017

My suggestion is to take it to a different shop, one that doesn't know Howard(Just don't mention where you took it to.) Have them look at it. If there is work that Howard said he did and did not do or should have done, have it documented. With that you can show it to Howard so he can make it right. Or use the documentation to sue him after you have to take your car to get it fixed right elsewhere. You paid. you should be satisfied. Personally I find it hard to believe that for $1600.00 they didn't replace the exhaust gaskets.

1990 Ford Ranger... | Answered on Mar 10, 2017

Catalytic converter/s. Did you replace the fuel filter also? If not, replace it. Not the problem though.

1990 Ford Ranger... | Answered on Apr 28, 2016

Well herold not quite sure what cable your dealing with. Hood, brake, gas filler,or?
Tell me what. You're trying to open so i can assist you

1990 Ford Ranger... | Answered on Mar 15, 2015

If your vech. is fuel injected, check your cold start valve. It sprays a bit of fuel when its cold to assist. In starting.

1990 Ford Ranger... | Answered on Mar 06, 2015

A lot of things can cause that on those old OBD1 systems. But I would start with cleaning the throttle plate and surrounding area with Carb cleaner, it may just not be getting enough air at idle do to carbine (Muck) deposits around the throttle plate. I would take off air cleaner hose, soak paper towel with cleaner, and open throttle plate and clean back in as far as you can reach, and the edges of the throttle plate. Hope this helps, good luck.

1990 Ford Ranger... | Answered on Jan 29, 2015

You need to replace the Temperature Sensor.

1990 Ford Ranger... | Answered on Jan 29, 2015

some vehicles are very hard to reach the spark plugs, but there has to be a way to reach them, usually from only one direction & angle.
they can get with a universal joint & the right length extension.

here is a link to a video that may help you.

Spark plug and plug wire replacement tutorial on a 1999 2.5 liter Ford Ranger pickup. The same procedure should work on all 2.3 and 2.5 liter trucks from 1989 to 2001.
How To Replace Spark Plugs And Wires 4 Cylinder Ford Ranger

1990 Ford Ranger... | Answered on Jan 23, 2015

What engine sizes there, 2.9L or 4.0L ?

1990 Ford Ranger... | Answered on Dec 22, 2014

USA Ranger?
see this.
In Europe, this engine was commonly fitted with the Bosch L-Jetronic fuel injection system, married to Ford's EEC-IV engine management.
so ILL ASSUME its USA spec car.
no this>?

2.9L Cosworth twin cam?

replace the 02, cleaning it, does nothing.

the pump power is bad, this is a very old car and as such
wires and connections fail. that bad ground was the big clue.

good fuel pressure requires a real gauge. its not carb car.
where even gravity feed, or 1psi runs the car, this car is fuel injected
and fuel pressure must be good.
there are 6 or more fuel pressure tests.
sounds like the Fuel system is running lean hot.
it can with a bad 02, the O2 (oxysen) sets fueling at idle. and light easy cruise. so , if the 02 is bad and sticks rich the fueling goes lean.
code 41 means stuck lean.
that new FPreg install is smart buy on such and old car.
the spec, pressure for 2.9L at idle is 35-45PSI, at all times.
it varies by altitude.
this engine and all of the ERA, all hate bad fuel pressure.
the ECU can not measure it. so it MUST be right.
i do all tests in the FSM regarding this parameter (pressure)
leak down tests and if MPI enigne, the balance test.
the Innova 3140 scan tool can scan this engines. ECU. in theory.
OBD1 scan tools are all weak. ( spotty coverage, but i do try)
live data is blessing,
when working any EFI system there are 1st questions,(seen at hood up,glance one... i cant do that)
The V6 EFI is it the TBI or MPI fueling, system.
1 injector (or pair in TBI) or MPI with 6 injectors.
2nd glance, is it MAP based or MAF engine.
speed density or air density, (big time important this......)
its hard for me to look this up because, there are so many engines.
the MAP engine races fast with FULL Power, if there are air leaks.
and has a hyper sensative IAT sensor, replace it if tests bad.
the MAF system(AIR flow actual) goes LEAN (see?) if there
are any air leaks, in this from the MAF actual point all the way to the
head intake valves (daunting huh.?) will cause lean.
and lean misfire.
and bogging, off idle and may be low idle. (if very bad)
some calif engines have the MAF setup.
when the engine is cold the ECU runs huge rich fuel mixtures.
(long injector squirt times) so hides the lean issues.
the ECU has 3 modes, cold, warmup and hot.
all 3 work different, (think of 3 ECUs) and win.
working scan tool free and no live data. is a very very hard job.
done many. old 90s, cars.

The fuel pump needs 12vdc, 13.3 to 15vdc runing
that is at the pump actual across the 2 pins to the pump
if less, then the wires are bad. (connections too) that includes the pesky ground do the pump. inspect every inch, if living in the SALT belt (google that) inspect and test every inch 2 times.
We dont have those issues in Texas. but up north, big time.
posting location ALWAYS helps, (like what STATE)
(if in calif . now is the time to fess up.....)
or car hood sticker shows CALIF words there....(C.A.R.B) certified, bla bla bla.

this is a MAF< the AIR meter. (i look for this first on all engines) ALL!


1990 Ford Ranger... | Answered on Jun 30, 2014

Check to be sure you are getting fuel to the fuel rail. The fuel filter could be stopped up. Also I would check the nertia switch to be sure it has gotten turned off. This switch is the fuel shut off switch.

1990 Ford Ranger... | Answered on Jun 22, 2014

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