Question about 1993 Jeep Grand Cherokee
I don't know which engine you have so these are generic answers.
It could be a plugged catalytic converter or muffler. Try disconnecting the exhaust from the manifold, be sure to fasten it up so it won't hit the ground or you'll end up with your exhaust wrapped around your rear axle (these stainless exhaust pipes are expense to replace). Take it for a drive and see if it helps, don't drive it too much this way or you'll ruin your valves. It might run rough with the exhaust disconnected.
It might be the fuel pump, on most Jeeps these are expense in tank pumps, it's best to check it before replacing it. There is also a fuel filter built into the fuel pump (not sure if it can be change separately) that could be causing trouble. Check by inserting an in line fuel pressure gauge or have it checked.
It could be electronic, if you don't have a code reader, you can try this trick but I don't know if it will work on your model. With out starting the engine turn the key on,off,on,off,on,off,on within 10 seconds. If you have a digital odometer it will give you the codes here, it will start with 12 and end with 55. 12 - engine not running, 55 - finished. If you don't have a digital odometer the check engine light will start flashing to give you the codes, flash - 1, flash -1, flash - 1, flash-flash -2, flash-flash -2, flash-flash -2, is 12 and so on until it's done and flashes a 55 code. If you get any codes you can contact by replying to this message, I'll try to help you from there.
Posted on Jun 06, 2010
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Posted on Jan 02, 2017
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