1995 jimmy I can't find where to hookup the pressure gauge to do a pump pressure test

I would start with a new battery once the cells in a battery go bad they won't hold charge so when you jump them and try to start them they aren't holding in voltage in the battery which doesn't allow the car to start. A starter pulls a lot of amp. If you don't replace the battery stalest try charging it on a low amp battery charger

Probably the fuel pump. When you stand outside the vehicle and turn the ignition on, you should hear the pump in the fuel tank working for a few seconds - if not, there is a problem with the pump, the pump relay, the fuse, etc. You can also check the pump fuel pressure with a gauge attached to the service port on the fuel line at the back of the engine (caution - use an approved gauge and hookup!).

If the pump is working, check the fuel filter for plugging. The problem can also be caused by a faulty fuel regulator (inside the upper manifold).

This culprit can be a bad cam sensor, bad fuel filter, or weak fuel pump, or fuel pressure regulator valve. Or simply a clogged misfiring or just bad injector. By testing your fuel pressure first and seeing if after a while the fuel pressure has not dropped in the fuel rail test for say 30 mins. If the pressure stays up that test eliminates the fuel rail pressure regulator. If the pressure coming in is weak all together your filter or pump is bad. If the RPM gauge does not move when this happens it is the crank sensor. If when cold it runs fine and starts running worse after warming up check the cam sensor. There you go need any help ask for me.please rate my solution it is how i earn my achievements. Thanks in advance.

Hello dogcollector: My name is Roger and I will help with your question. First if the pressure went to zero and the engine did not lock up or start knocking? I would replace the oil pressure sensor or check for a broken wire in the sensor area. I would also perform a oil pressure test. This is done on a cold engine through engine warm up to a hot engine. This will tell you if there is a major mechanical problem or just a bad sensor. Even if you just replace the sensor I would still have the pressure test done as this will give you a good idea of engine bearing problems. Should you need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger

if the noise is coming from the oil pan you may have bad rod bearings or main bearings or the oil pick up tube could have also came loose but since you have oil pressure im gonna say your looking at replacing or rebuilding the engine witch is a major repair.

Definitely get the codes read if any. But usually the check gauges light is telling you to monitor the gauges due to a pressure problem. If the oil pressure gauge is high it could mean there is a blockage in the flow from the oil pump to the heads if there is a blockage it will cause the vehicle to over heat (at the least!) It will also destroy the engine! Have a mechanic run a pressure test on the compression, oil pump, and oil flow to the heads.

Hi. This will indicate that there may be some sludge build up in the block, or the oil pressure switch may be damaged. The more serious issue will be a failing oil pump. To isolate the issue, simply, have a oil pressure test ran on this engine. If the test indicates that the true oil pressure is optimal at idle, kindly replace the oil pressure switch. Now, if the test proves that the pressure is indeed lower than factory specifications, this will confirm that the pump is damaged. Have the pump, and oil pump screen replaced, in this case.

NOTE_ I would, also, recommend to have the engine flushed asap.

could be the fuel pump ...you will need to do a fuel pressure test on it ..the pressure should be 63 anything lower even so much as a few lbs will cause this to happen ...as well if it sat that long i would consider a complete tune up and check all vacuum lines for dry-rot

sounds like a ground or power failure you will need to check with a test light from what point to what point you are getting power to etc...then its also from your description possible to do with the electrical system itself i suggest looking for the obvious 1 st then ck for shorted fuses and relays broken worn cracked wires etc that's a starting point also sounds as if the wiper and tun signal armature have a connection to this issue !

I have same symptems. Fuel pressure tested out at 14psi and should be 60+ I have it on the lift today and this time I'm putting on a AC Delco pump. The one I got from Napa only has 5000 miles on it!!!!