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Jeep Wrangler, Scheduled Maintenance, Steering, Suspension, Tires, SUV
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May 08, 2010 (1:54 pm)
I have a 1997 Jeep Wrangler with a 2.5L engine. It was running great but recently would not start. The engine turns over but acted as if not getting fuel. When I cleaned and pressed down on the fuel pump fuse, the engine caught and was able to drive it. Now when I try to start even while applying downward pressure on the fuel pump fuse, the engine starts and immediately dies. The engine will only catch if pressing down on the fuse and if NOT depressing the gas pedal. As soon as I try to give it gas after the engine starts it just dies faster.
#1742 of 1888 Re: 1997 Jeep won't start [newjeepowner1]
May 10, 2010 (5:51 am)
Any codes being thrown? I had a problem with my 97 2.5L and it was the throttle position sensor (had something to do with the huge mud puddles I was driving through that weekend). Other than that, perhaps take out the FP fuse/relay and make sure all is clean and making good contact.
#1743 of 1888 FUEL GAUGE PROBLEM
May 15, 2010 (10:46 am)
My '01 wrangler sat for a month nearly empty of gas and when I took it out the gauge registered nearly 1/2 full ?????
Any help would be appreciated !!!
#1744 of 1888 Re: FUEL GAUGE PROBLEM [hswintek]
May 16, 2010 (5:12 am)
Unless you want to drop the tank I suggest you just fill up and drive it as normal until the sender frees up.
You can monitor your fuel level by mileage, assuming you have a rough idea of your mpg.
#1745 of 1888 Re: FUEL GAUGE PROBLEM [mac24]
May 17, 2010 (7:25 am)
APPRECIATE THE INFO !!!!
#1746 of 1888 97 TJ Battery/computer chip/Alternator
May 21, 2010 (9:07 am)
I assume I have gotten the computer chip (located under the hood by the battery) wet while off-roading one day and now I have a problem w/ the alternator not recharging the battery.
From what I understand, the alternator runs to the computer chip then relays to the battery to recharge it. The jeep starts up fine (so long as the battery has juice) but the battery will not keep a charge.
Yes, the alternator works just fine. I believe its the computer chip that is the culprit.
My question however is does anyone have any idea's on how to perhaps by pass the computer chip and connect the alternator directly to the battery to recharge?? Could it be possible to fit a GM alternator on the Jeep b/c those alternators have everything on them that is needed to connect directly to the battery to recharge it. Any idea's or solutions would be greatly appreciated.
ps. I know I can send off my current computer chip and get it fixed for around $350 + tax.
#1747 of 1888 Re: 97 TJ Battery/computer chip/Alternator [tj97]
May 21, 2010 (11:46 am)
Are you getting any code? I saturated my engine area and threw codes for my throttle sensor. Never had issues with recharging, just keeping it running.
#1748 of 1888 Re: 97 TJ Battery/computer chip/Alternator [tj97]
May 21, 2010 (5:11 pm)
From what I understand, the alternator runs to the computer chip then relays to the battery to recharge it.
Kind of, but the PCM doesn't handle the full alternator current. It receives an input from the alternator's secondary rotor field and its ground, then using additional inputs from the battery voltage sensor and line voltage it regulates the alternator output by cycling the ground path to control the strength of the rotor's magnetic field.
While it's possible that the EVC (Electronic Voltage Control) circuit in the PCM may have failed, it's far more likely that the fault lies in the wiring between the PCM and the alternator, either an open circuit (broken connection or bad fuse), a short, a high resistance connection, or a bad ground.
First you need to check for codes, which may point the direction to the problem.
However, to answer your question, it's possible in theory although the PCM will permanently be showing charging codes. I've never done it though.
#1749 of 1888 Gauge Problems
May 23, 2010 (5:02 am)
Any info . have 1998 wrangler ck light on, drive down the road the air bag light goes on, ck light goes off but the gauge go down "sometime" all( speedo/tack/oil ).There is always a light(air bag or ck light). Had a friend scan for codes. He thinks the dealer is the only way to go?? Any help be for i do that Thanks
#1750 of 1888 Re: Gauge Problems [4whit]
May 23, 2010 (7:15 am)
Sounds like you have two problems. The first affecting the gauges is likely tied to the large round connector at the rear of the instrument panel. It needs to be unplugged and all the flat male contacts tweaked by about five to ten degrees, which will give a more positive connection when reconnected. Also, inject dielectric grease into each socket before reassembly.
Assuming there were no codes found then the most likely cause of the airbag light and corresponding 'check' light is a failed or failing clockspring. This also often has the effect of causing the horn and cruise to work intermittently or not at all.
The clockspring is actually a long flat connecting cable wound like the mainspring in any clockwork mechanism, and it's contained in a cassette housed in the steering wheel. This enables electrical contact to be maintained between the steering wheel and the vehicle while the wheel is being turned.
It's easily replaced, but it's critical that you disconnect the battery for at least five minutes to allow the firing capacitors for the airbags to discharge before you start disassembly.