1994 Jeep Wrangler Logo

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corey kazlauskas Posted on Dec 10, 2017
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I have a 1994 wrangler.must crank starter multipul times for fuel to reach fuel rail on 2.4 or 2.5 4 cyl.Once finally starts will run great all day and start.Next day starts hard again.I replaced fuel

I have a 1994 wrangler.Must crank starter multipul times for fuel to reach fuel rail on 2.4 or 2.5 4 cyl.Once finally starts will run great all day and start. next day starts hard again.I replaced fuel pump still same.I did notice there was not 12 volts at pump with ignition on until cranking mode.Please help if can.

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Ronny Bennett Sr.

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  • Jeep Master 6,988 Answers
  • Posted on Dec 10, 2017
Ronny Bennett Sr.
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Joined: Feb 28, 2009
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21993

Replace the fuel pump,the check valve that holds pressure on the fuel is in the fuel pump.The fuel in the lines is draining back into the tank

5 Related Answers

Anonymous

  • 372 Answers
  • Posted on Aug 06, 2008

SOURCE: 94 Jeep Cherokee won't start

I believe the green wire is a pulse from the distributor and its a ground signal. I could be wrong since is been a while since i left the jeep dealer...I would take the coil out (2 bolts on most) and take it to autozone. They can test it in minutes for free. Either that or the ignition module but more common is coil.

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Anonymous

  • 2920 Answers
  • Posted on Aug 18, 2008

SOURCE: 94 Cherokee won't start

check the ecm and the crankshaft positioning sensor both will keep it from firing

Anonymous

  • 323 Answers
  • Posted on Jun 17, 2009

SOURCE: 89 Jeep Comanche Fuel Pump. Won't start after running great.

Replace the crankshaft position sensor

Anonymous

  • 10 Answers
  • Posted on Jun 24, 2009

SOURCE: 2007 Jeep Wrangler Unlimited Crank-No Start. Replaced FP.

Hey Tim take a look at this, will this help ?
SUBJECT:
No Engine Crank Or No Engine Start Due To Electronic Lockup Of The WCM / SKREEM
OVERVIEW:
This bulletin involves the replacement of the Wireless Control Module (WCM), and if
equipped, the replacement of the Electric Steering Column Lock (ELV). The WCM is also
referred to as the Sentry Key Remote Entry Module (SKREEM).
MODELS:
2007
SYMPTOM/CONDITION:
The customer will experience a no engine crank AND a no engine start condition. Also, the
remote keyless entry (RKE) system will not operate. This condition may be due to an
electrostatic discharge (ESD) from the ignition key into the Wireless Control Module
(WCM), causing the WCM to electronically lockup. This condition may occur more
frequently in dry and/or cold weather conditions where a sufficient electrostatic charge is
more easily produced. This condition is corrected by the replacement of the WCM
DIAGNOSIS:
1. With the condition present (i.e. the vehicle in the no crank / no start condition), connect
the StarSCAN® scan tool to the vehicle.
2. Turn the ignition switch to the “ON” position, and power up the StarSCAN®.
3. If the WCM is electronically locked up, the StarSCAN® will display the WCM as being
“off bus”.
4. If the no crank / no start condition is present, and the WCM is “off bus”, then reset the
WCM by temporarily removing the IOD fuse (with the key out of the ignition switch),
wait for 10 seconds and then reinstall the IOD fuse.
5. With the IOD fuse reset having been performed, verify that the vehicle will now crank,
start, and run.
6. If the condition is temporarily corrected by performing the above steps, and if the part
number of the WCM is earlier than the part number of the WCM listed in the part
reference table in the Service Bulletin Parts Required Section below, then perform the
Repair Procedure.

Anonymous

  • 12 Answers
  • Posted on Sep 12, 2009

SOURCE: 1997 2.5L CRANK NO START

clog in your fuel line or you need to change your fuel filter.

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1helpful
1answer

1990 jeep wrangler 4.2 6 cylinder starting issues. My jeep starts up no problems first thing in the morning but as the day goes on it randomly cranks for long periods of time before finally starting. Now...

You'll have to figure out if the delay in starting is fuel or ignition to proceed with that.
The starter could be sticking when it is hot - either by the solenoid or the bendix staying engaged.
A mechanic would check for fuel pressure and spark when it is not starting .
1helpful
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1994 jeep wrangler 6 cyl 5 spd no start

have u ck out the ignition switch [not the key & tumblers],, or the neutral safety switch to see if u have power ,,also seen broken wire at solenoid on starter too,,hope it helped,,
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I have a 2000 / s-10 pick-up what is the fuel pressure for starting and does the pressure change when running. It cranks and cranks but won't start until i spray starter fluid in air intake, than it runs...

fuel pump issue. Soon it wont run at all. Fuel presure should stay consistant with key on.
6 cyl 60 - 66 psi
4 cyl 41 - 47 psi

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/thomas_c50676e836a18949

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93 wrangler 2.5 will crank but won't start. I pour gas down the #1 cylinder and put the plug back in and it will crank for about 8 seconds then sputter to life and idle and run fine. Shut it off and try to...

Yes...check the pump, filter and output. Also check the ballast resistor for the pump. Stop pouring fuel into the cylinder...instead, use carb cleaner and spray into throttle body (excess fuel in one cyl will contaminate your engine oil). If it runs normally after you get it started likely the pump is good (unless you have problems at high rpm's under power) Regulator is likely good as well...default is to more fuel not less.
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Describe your 2007 Jeep Wrangle2007 Wrangler

USA car
what engine???????????
wiki
2.8L VM Motori RA 428 Diesel I4
Complete engine specs[show] 3.6L Pentastar V6
Complete engine specs[24][show] 3.8 L EGH V6
times the starter will continue to run until key is turned off.
that is starter relay bad or the puter running it gone nuts.
or bad starter
next time when starter latches up, pull the relay
if it kills the cranking its bad relay or puter
if not, bad starter. all in 1min work..
and a very very serious first ORDER fix first problem
runs on test fuel. but you failed to keep it running for the 2 -3 second JEEP RULE.
if you had here is the results. (logic) hard.
1: i can keep it running with spray need a video?
yes, means ASD is not dropping out
2: no? ASD is killing the engine on purpose. and scan tool told you.

cranks no start
you said,
"No codes." if really true , there is no fuel pressure.!
if not true, its done wrong. so scan correctly THIS time.
is the skim light glowing in the dash cluster, if yes, it will not start
by DESIGN. SKIM is the immobilizer and DOES!

you must scan WHILE l its failing, not after, WHILE.
HOW TO SCAN correctly on JEEPS, (no starts)
key on, see scanner working? now, it must, if not ask.
crank or 5 seconds, (1 potato , 2 potata, 3,4,5.
release key, ( 4 and 5 are overkill but why not?)
do not turn key off or say 2 minutes, get PCM time to REPORT.

scan (2008 or newer scan tools work, CAN-BUS certified)
the tool then tells you why the ASD RELAY dropped killing starting (by DESIGN)
try to know SKIM is and option, so.... me blind can see car
http://jeepdied.com/ASD.html

runs on test fuel longer that 3 seconds, by hand, means.
all is working mostly, the fuel pressure gauge needs a jeep hose kit to work so/....... the pump needs power to work,



now the acid tests
i have 2. acid tests lacking a real scan too;..
spark timing light connected up.
you crank and spark dies, AFTER 2-3 seconds into crank/start
cycle means ASD dropped.
connect meter to injector 12vdc power feed its a daisy chain
12vdc dies, at 3seconds of crank, or dies
at 3 seconds of running,
if true PCM did that , and is ASD drop doing that
running any jeep for 1 second on test fuel is a waste of time
it tells too little
learn that jeeps can drop a ASD at 100mph
any time it wants. and only scanning while it drops
tells you why, unless the SKIM lamp glows,
0helpful
1answer

1995 Wrangler takes a long time to start.

things like fuel filter may need to repalce also if you have a pin hole in a fuel line this can cause poor fuel prssure start up"s! good places to start
0helpful
1answer

New fuel pump.............

hi there i do believe you have a faulty or leaking injector because it should stay pressurized when you shut off the engine
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