Been sitting for 2 years with very little petrol had the fuel pump changed over and the man said there was good presure when i drive it seems to chug along intill the revs get higher the not bad would it be moisture in the take or slug or the injectores
Get it into a garage that does the fuel system flushes . shop around try to get one of the ones that are more common at a reputable garage . as always avoid dealer when possible but always try to buy oem parts
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Holden Rodeo 1989 2.6mpi , start and only runs for 2 or so seconds themselves stalls, after putting on a fuel peesure gauge, fuel looked okay and slowly dropping, found the ECM relay was intermittently switching on and off, gave it a tap and the engine kept on running, relay not repairable, replace with new part. Located in the fuse and relay box on the right hand side of engine bay next to battery. Hope this helps.
I had the same problem, I changed everything, air flow meter, plugs, leads, checked the timming belt etc. etc. The problem turned out to be the fuel pump, its inside the tank, you need to check the fuel pressure with an inline guage, it needs to have 30 psi, mine was only 15 psi. also you should have the injectors cleaned. good luck. Gary
Underhood fuse block swap out relay #7 thats the ECM relay. Ground Circuits Using a DVOM, touch negative voltmeter lead to a good ground. Touch positive voltmeter lead to each ground terminal. With vehicle running, voltmeter should indicate less than one volt. If reading is greater than one volt, check for open, corrosion and loose connection on ground lead. See ECM GROUND LOCATION table for ECM ground location. Page 1 of 1 SYSTEM/COMPONENT TESTS - 2.6L EFI -1994 Isuzu Rodeo
I have reviewed your problem and have the fallowing for you to aces.
I have had 2- Rodeo's first was a 4 cylinder, and the one I am driving now is a 4 wheel drive 6 cylinder.
Both have given me problems with engine stalling and rough idling.
I have also found problems with the check engine light.
Things I have found to cure problems.
First, after 75 or 80K, you will need to change and service several things.
(1) EGR sensor, this unit sits to the rear left side of engine and will greatly contribute to poor idling and a computer, check engine light from time to time. This unit cost about $95.00 and autozone will warranty for life. The unit is easy to remove and replace, it has 2- bolts and a 4 or 6 wire plastic connector on it top.
(2) You fuel filter, this unit is located under the drivers side door and is also easy to remove and replace. Cost about $15.00.
(3) Last, fuel pump, now my last Rodeo had bad fuel and I had to replace the pump and that is a job and a half.
The fuel pump is located in the fuel tank and the tank will have to be dropped, to replace it.
I was able to pick up a used pump at a local junk yard, because of the price and availability. You may have to buy from dealer.
Hope this information has been of good help to you.
Have fun. P.S. My first Rodeo blew up after 227K and the one I am driving now has over 140K. Please rate....
If you have the 91 3.1 V6 Rodeo you can't adjust the fuel pump or fuel pressure. The only thing you can really do is to get a throttle body rebuild kit that will have a new diaphragm for the fuel pressure regulator. If you want to adjust it, you'll have to get an aftermarket regulator and install on the return line (the smaller line) and remove the spring out of the regulator on the throttle body. If you feel the fuel pressure is too low, then you might need to change the pump. Its located in the fuel tank, only takes 1 or 2 hours to do.
"when the fuel pump kicks....it makes a very short duration sound....you can hear it....but in seconds it will be gone......as gasoline has made its way to the engine.........
if you cant hear any noise from the fuel pump......it could be that the fuel pump realy is bad........if you happen to change the relay....and it still does not work.....then it is the fuel pump. that is fried.......
about the water.....i am not shure......unless there was water in the gasoline itself....or somebody put water in there in purpose....