My son has a '92 Jeep YJ Renegade, 4.0L/6Cyl, "S" VIN, 150K miles. The Jeep is hard to start, has a continuous "miss" at 2000 to 3000 rpm's, and has lost power. It idles fine, and does not overheat. The battery is okay.
The parts that have been changed are: fuel filter, fuel pump and sending unit, fuel pressure regulator, spark plugs and wires, distributor and cap, rotor and cap, thermostat, all gaskets from the head up, oil pan gasket set, coil, loom, starter, fuel injector cleaner has been added (Sea Foam) and God only knows what else. I told my husband that I could smell fuel inside the cabin, and outside of the Jeep. He can't smell fuel. Could it be that it needs a new O2 sensor?
The engine trouble (idiot lights) do not come on to alert us of any problems with it. We don't know if we may have a bad fuel injector, timing belt may be loose, if we should replace the MAF, EGR valve, or the MAP sensor? My husband wanted to take it in for a diagnostic, but I've heard that with a vehicle that old; the new computers may not be able to detect much at all. Should my husband run another pressure test since changing the head gasket set, and also check the fuel pressure? We are at a told loss.
San Antonio, TX
have the same problem?
Monday, January 16th, 2006 AT 4:20 PM