Jeep died in the middle of the street.
#1
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Model: Cherokee
Jeep died in the middle of the street.
1990 i6. Was just going around a corner slowly and the jeep just plain died. Tried to restart it, fired up like usual but then right away just died. It fires up but wont stay on. My first thought, its a fuel issue. So i pressed the nipple on the test port and there was almost no fuel coming out. When i turned the key to on position I dont hear the pump prime either.
What could be going on? The whole sending unit is brand new, its got new fuel pressure regulator and the truck was running fine all day today.
What could be going on? The whole sending unit is brand new, its got new fuel pressure regulator and the truck was running fine all day today.
Last edited by Rushin; 02-20-2011 at 10:39 PM.
#3
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Year: 1990
Model: Cherokee
Engine: 4.0L
you check the linkage for the throttle? im not 100% sure but my friends focus did this when the stop that keeps the engine at an idle broke so it would just cut its own gas
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Year: 1990 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
I 2nd this check your fuses and your fuel relay... Check your fuel injectors make sure none are leaking also I would check your Iac and throttle body...
If you hold the gas pedal does it stay running?
If you hold the gas pedal does it stay running?
Last edited by The Rooster; 02-21-2011 at 01:56 AM.
#6
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Model: Cherokee
If I hold the gas down it keeps running, yes. Fuel pump makes no noises at all. It does not prime. There is no pressure in the rail at all. I swapped the relays around and still same thing. If I totally remove the fuel pump relay it just won't even start, just cranks. Where is the fuel pump fuse on a Renix jeeps?
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Year: 1999
Model: Cherokee
Engine: 4.0
The fuel pump itself is #1 suspect.
With an 87-90, you should have 31 psi while idling. Then disconnect the vacuum line leading to the fuel pressure regulator and the pressure should jump to about 39 psi.
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#8
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Model: Cherokee
If it runs by holding the gas pedal down, then it is likely not an electrical control problem.
The fuel pump itself is #1 suspect.
With an 87-90, you should have 31 psi while idling. Then disconnect the vacuum line leading to the fuel pressure regulator and the pressure should jump to about 39 psi.
The fuel pump itself is #1 suspect.
With an 87-90, you should have 31 psi while idling. Then disconnect the vacuum line leading to the fuel pressure regulator and the pressure should jump to about 39 psi.
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Model: Cherokee
Ok, a little update. Was able to get it into my drive way, with a help of a good friend. We did a few testings. Pump does
Not prime at all. Key on no sound no buzz. It does start normally like it always did. I han my hand on the supply line right at the fuel pump, key on, no noise, line is limp. When Sean started the car the line got hard he kept it reved up at like 4-5k and then as soon as he let off the line went limp.
So there is pretty much no fuel pressure. The pump gets power and runs for a little bit and then just dies.
So pump is bad?
Not prime at all. Key on no sound no buzz. It does start normally like it always did. I han my hand on the supply line right at the fuel pump, key on, no noise, line is limp. When Sean started the car the line got hard he kept it reved up at like 4-5k and then as soon as he let off the line went limp.
So there is pretty much no fuel pressure. The pump gets power and runs for a little bit and then just dies.
So pump is bad?
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Model: Cherokee
What's the easiest and safest way to hot-wire it? That way I can see if its the pump itself or some wiring deal. Just two things I don't understand why it's working when I floor it but wont prime when the key is on and won't run at idle, but the truck starts fine.
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Year: 1994
Model: Cherokee
Engine: 1997 4.0 I6
Seriously?? Stick i frickn voltmeter or test light to it, start at the relay, check your fuses and narrow it down to the pump, put the leads on the pump , have someone crank, see how many volts you have when cranking. Check all your connections/wiring, it can be frustrating and expensive to just throw parts at something until you have a result, faster to prop diagnose it, follow the steps, and it could be a simple fix.