96 Jeep GC Laredo
by Trucktool - 3/21/11 4:34 PM
In Reply to: 96 jeep grand cherokee limited has the same problem by kirk280zx
These cars all develop the same symptoms.. before you try anything else.. locate the ECM. On the 96 GC it is behind the radiator overflow - remove 3 10mm nuts. Lift it out of the way. The ECM has a plastic cover which pops off(forward)and you will see three large plug bundles plugged into the ECM. Here is what a guy told me- disconnect the battery, then there are two torx screws holding the cover on the actual metal ECM - they are 1/2" long..below the plugs in the front of the ecm. With wear and bouncing the board moves and contacts the end of the screws-- back them out half way - reconnect the battery and try to start it - if it works.. put in 1/4" sheet metal screws instead of the 1/2" long ones. Problem solved in my 2 cases.
It worked on both my 96 GC's. I am sure the guy saw this somewhere on the internet- he is just not that smart... this fixed the gas gauge issue and they run now..very well. I am guessing this was a long term problem that was intermittent..
If this doesn't fix it- the only other real culprits are the crankshaft position sensor and the ECM itself... try it - there is nothing to lose and it may work for you.