20 Most Recent 1995 GMC Jimmy - Page 9 Questions & Answers

Here's how to install heater core.Here's the heater core.

1995 GMC Jimmy | Answered on Dec 25, 2012

Not familar with american motors but i would hazard a guess and assume they are for the lamba sensor ,now the 2 white wires sre for the heatrer on the sensor so they can be connected anyway around but the 2 tan wires have got me as a lamba sensor uses two different colours for the filament in the sensor a gray and black is normal but it can vary although i have seen two black and two grays on some replacement sensors so just connect them up and if iam correct it should work providing that this is the lamba sensor wires you have cut through ,if iam right and the engine symbol light comes off reverse the two tan wires and clear the fault code and try again

1995 GMC Jimmy | Answered on Dec 19, 2012

I do not know a lot about american vehicles but one thing i do know and that is a lot of these older vehicles have a immobilisor on top of the tank ,the power runs to this then the pump and with the ford explorer these electronic switches can pack up for fun so by pass it if you have one fitted

1995 GMC Jimmy | Answered on Dec 19, 2012

If you mean the fan switch is not turning anything, you'll have to replace the blower switch in the dash. If the switch turns but nothing happens, you'll have to check the resistor and fan relay for power.

1995 GMC Jimmy | Answered on Dec 18, 2012

How about the spider injector that might be the reason your vehicle is running rough and using up tp much fuel. The fuel regulator is part of the spider injector and it costs about $40. or $ 50. but if the injectors are bad then you will have to replace the spider injector, which will cost you $200. or less. From my own experience dont jujust change the fuel regulator and then have to buy the spider injector. It is best to make sure that it is not the injectors also. The fuel regulator is know to go bad on 95 GMC Jimmy believe me I have had to replace many other parts because of the spider injector.

Good luck

Lady Janette

1995 GMC Jimmy | Answered on Nov 29, 2012

take a rubber or cowhide hammer and rap the bottom of the tank several times and then turn the key forward and listen for the fuel pump sound. If rapping on the tank allows the pump to run then the pump itself is going bad so change the pump if that is so.

1995 GMC Jimmy | Answered on Nov 15, 2012

Hi William, The fuel pump pressure is correct but the fault reading you followed means low voltage signal into the TPS. Seems you may have replaced the wrong part? I would think that the problem is with the mass air flow sensor or the ECU as that is where the signal comes from. Regards John

1995 GMC Jimmy | Answered on Nov 11, 2012

There is not a part called a fuel sensor on this vehicle. If you have good electrical to ingition and no OBD codes witch it is most likely an OBD 11 system the first year for your vehicle. So is the MIL light on service engine light on if no then replace the fuel filter first its under the drivers door mounted to the frame rail also check if the fuel pump is putting out enough fuel and pressure when you have the filter off by turning the key to run and putting a plastic bottle on the line comeing from the fuel pump you should get about an ounce per second from the pump do a 5 second test you should get about 5 ounces of fuel. If you say get one ounce then the pump is no good if its OK then it is likely the fuel filter and this will solve the problem. The reason i'm telling you this is the fuel pumps on these vehicles had problems and unless you or someone else has replaced the pump it is the most likely cause of this problem good luck A nd there some fuel sensors on the fuel pump it self for pressure and gauge control and EVAP emissions control systems that wouldn't stop fuel flow to the throttle body they would just set codes off

1995 GMC Jimmy | Answered on Nov 06, 2012

The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

1995 GMC Jimmy | Answered on Nov 04, 2012

What is the issue?

You see what you want to remove

Is there somehow a removal that was done
to the original wiring? If so,then you may need
factory wiring diagrams to restore it to the way
it was built

Helm.Com for any factory OEM Manuals

1995 GMC Jimmy | Answered on Sep 29, 2012

If it is like the older GM Products of the 1960 thru 1980's,
it will be a small vacuum switch inside the air filter housing

When the vehicle is cold a switch in the coolant will
allow vacuum to flow to the air cleaner & the door will
close restricting most air into the motor on start up,so
the air is heated quicker

As the coolant warms up it switches off vacuum & the door

Easy to check

You use a hand vacuum pump on the air cleaner bottom half
to actuate the door & put a vacuum gauge on the ported
switch when cold & see if you have vacuum & it shuts off
latter when warm

You should have a vacuum diagram on the radiator support
or under the hood on the Federal Emission Label that is on all

1995 GMC Jimmy | Answered on Sep 29, 2012

As with any noise it is best to hear it to make a decision on what it is. have a local shop technician drive the truck and listen.

1995 GMC Jimmy | Answered on Sep 28, 2012

Maybe a blown rear caliper, look for oil leakage on inside of wheel unit.

1995 GMC Jimmy | Answered on Sep 18, 2012

Do you have any leaks? If none are found and the fluid is still high, then your master cylider is shot. Pump the brakes, is the pedal hard? push slowly, does it go down now?

1995 GMC Jimmy | Answered on Sep 18, 2012

Only Ford products have an inertia switch for the pump.
If your fuel pump is not working you would check the fuse and the relay.

1995 GMC Jimmy | Answered on Sep 09, 2012

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