Question about 1988 Nissan Pulsar

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Engine won't crank, no spark and no fuel?

Engine won't crank over without a jumper wire on the inhibit relay, then it cranks over but there's no spark from the coil and distributor plus there's no fuel either? Any ideas. It's a 1988 Nissan Pulsar NX with a 1.6L eng.

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Check your map sensor which will be mounted up on the back firewall. The tube going to it is run off vaccuum so needs to be in perfect condition. I had the same probelm in the past :D on same car too lol

Posted on Jun 26, 2009

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2008 chevy express 3500 6.0 fuel pump no power was driving it and it just quit replaced pump still nothing just cranks over


Engine cranking, did you check for spark at the plugs, also, check fuel injector pulse. Any applicable trouble codes?
When you first turn on the key, no crank, can you hear the pump run for a couple seconds?
If only a fuel issue, jump the relay to see if pump will run. Unplug relay, use jumper wire between terminals 30 and 87, the pump should run, don't need to use your key. As you can see, terminal 30 is hot all the time. Also, check that fuse.
Let us know what you find?

express fuel pump relay-whhyjzqjjp5evwrxcrtcuanz-2-0.jpg

Feb 25, 2017 | 2008 Chevrolet Express

1 Answer

1991 Dodge Ram 50 2.4 fuel pump pumps while cranking but not in ignition 1 position. Changed fuel relay. Jumper wire gets it going but believe that there's no spark either?


This is entirely normal, a fuel pump will run only for a few seconds so that it is primed. If it ran continuously without the engine running pressure would build up inside it and would probably cause damage. After if has run for a few seconds after the jey is first turned it will , basically, switch off and wait for a signal from the sensor, communicating that the engine is cranking at whick point it resumes pumping in order for the engine to start.
Remember, the spark and fuel must coincide in the combustion chamber in order for there to be ignition, if you have no spark that may be the issue.
You can check whether fuel is getting to the plugs by cranking over repeatedly and quigkly removing a plug. If the pump is supplying fuel the end of the plug may have some fuel at the tip or may smell of petrol/gas.
You have to find out why fuel and spark are not coinciding essentially, in the combustion chamber.

GOOD LUCK

Jun 17, 2015 | Dodge Ram 50 Cars & Trucks

1 Answer

1997 Pontiac Firebird, will not crank. Changed fuel pump and the relay, now the security light is coming on and injectors will not engage...HELP


On my '97 Camaro, the first thing I hear when turning the ignition key is the fuel pump run and the fuel rail pressure up. .
First thought is, manual cars must have clutch depressed and auto cars in Park or Neutral to enable cranking. If these inhibit switches are faulty then that could be your problem. Had an old 5-speed manula Pontiac Fiero with a faulty inhibit switch. I just bypassed the switch with a piece of jumper wire. Just had to remember to ensure car was in neutral when starting!!
Do you have a shop manual with wiring diagrams? The Haynes manual schematic covering both Camaro and Firebird diagram shows a theft deterrent relay between the starter key switch and the main starter solenoid mounted on the starter motor. This relay actuating coil has a volts feed on one side of the coil from the inhibit switches fitted to ensure the car is in Park or Neutral for Automatics or the clutch must be depressed for manual cars. The other side ot this relay coil is grounded via the Theft Deterrent Module.
There is also a further fuse. Number 16, a 3 amp fuse labelled "Crank fuse" that is labelled as going to the Diagnostic Energy Reserve Module. Not sure what that is but with the fuse labelled "crank fuse" it sounds important!! it may be linked to the theft deterrent module but my manual is not clear on that.
If all the fuses are OK then I think the problem lies in the anti theft system.
To bypass the anti-theft and enable cranking you could simply break the yellow/black wire from the theft deterrent relay and ground the relay coil. (cut the wire and connect to ground / chassis, the bit going to the relay not going toward the anti-theft module) Turning the starter key should then apply volts that are coming from the transmission inhibit or clutch inhibt switches to the coil of the theft inhibit relay. This relay then pulls in and applies vots to the main starter solenoid and so enable cranking. The starter solenoid should be heard as a solid thunk as it pulls in. Small relays as a tick.
If this works then wire in a hidden switch in this ground wire to act as a unique anti theft device.
However if the vehicle control electronics are also fried then you will still have problems.
Hope all this is of some help and best of luck.
Cheers, Brian. (Over in Manchester, England, Europe)

Oct 31, 2013 | Cars & Trucks

1 Answer

Truck will not start with jumper cables or new battery. just turns over


I am assuming you mean the engine cranks but won't start, and won't crank without being jumped. If the engine cranks without jumper cables the battery and starter are working correctly.
If the engine does not start, you need to know if you are getting spark to the plugs and fuel to the injectors, and normal compression.

Jan 18, 2013 | 1992 Toyota Pickup

1 Answer

Cranks well but won't start.


Looks like you got spark, and gas in the throttle body made it fire: nice work.
Sounds like your fuel pump is out or the wiring is not turning it on. One way to be sure is to set a spare battery near the tank and hot wire the pump with jumper wires. Or if you have a voltmeter check for voltage at the fuel pump connector while the truck is cranking.. If the pump is working and getting gas to the engine, see if the injectors are pulsing. A good idea to check fuel pressure if the pump is working.

Nov 17, 2012 | 1992 Toyota Pickup

2 Answers

2005 Dodge Grand Caravan won't start


Make sure the battery has a full charge. If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure, also, check fuel injector pulse. If your missing everything, check cam and crank sensors.
With engine cranking check primary voltage to coil and fuel injectors, brown wire with white tracer. If no voltage leads back to asd relay. I'm not saying that relay is faulty. You can see fuse for that relay, that fuse circuit is hot all the time. The computer grounds the control side of relay if it sees proper cam and crank signals.

asd relay-4fcbupq2uhzhy54aw1xd52pr-4-0.jpg

Apr 19, 2017 | Cars & Trucks

1 Answer

My 1992 Jeep Cherokee Laredo is acting like it DOES have an impact sensor. Even the connectors for bridges are causing the engine to stop. Power is still on (lights, heat, gauges). I have to struggle to...


Sounds like a loose connection, positive or ground. When problem is ongoing, jump starter relay, load side, the load side is that line with arrowhead, unplug relay, use jumper wire between those two terminals on left side of diagram. The starter motor should crank. If you try that make sure tranny is in park or neutral and parking brake is set. If it cranks with jumper but won't otherwise, have to check control side of relay, right side in the picture. That top wire is voltage from ignition switch, bottom wire is ground.
starter relay-n554jrrfwke34dmyum3hljpz-5-0.jpg

Apr 09, 2017 | Jeep Cherokee Cars & Trucks

1 Answer

What typically is needed to to be done if a 2001 supercrew has had air bags deployed and wont start after that. The switch in the right kicker panel for the fuel pump does not appear to have been tripped....


Good info on the PATS / theft light. Looks to be the PATS / HEC operation is functioning correctly

The Fuel inertia switch only cuts power to the fuel pump, so if tripped, the truck would have a crank no start issue. Do you have a crank no start, or no crank issue.

To reset, just press down on it. To check if the switch is tripped, check for power at the connector to the fuel inertia switch

Engine compartment fuse # 10 ( 20A ) to the fuel pump relay -> Dark Green w/ yellow stripe wire to the fuel inertia switch -> pink w/ black stripe wire to the fuel pump module.
Check the pink w/ black stripe wire to ground with a meter for power, with the key in the run position.

If you turn the key from off to run ( do not start ) you should hear the fuel pump cycle ( hum, then turn off ).

Could be an issue with the fuel pump relay ( my '01 had a crank no start at ~ 35K miles, bad fuel pump relay ). I proved this out ( after a stupid ID10T error in my diagnoses process ) by jumpering the normally open contacts in the fuel pump relay socket, and then installing the trailer tow reverse circuit relay into the fuel pump relay socket ( same full size Ford Relay ).

Jumpering the fuel pump relay in the relay socket ( remove relay and use jumper wire ), red line
sscullys_16.jpg

If you have a no crank issue, could be the DTR ( Digital Transmission Range ) sensor on the driver's side of the trans is out of alignment.

Check the start motor relay ( on the firewall on the passenger side ) for power on the Tan w/ Red stripe wire when the key is in the start position ( this is from the ignition switch through the DTR when in park or neutral to the starter motor relay ).

You can test another route, turn the key to the run position, and apply power to the Tan w/ Red stripe wire on the starter motor relay in the engine compartment on the firewall. BE CAREFUL, the motor should turn over, keep clear of moving parts.

Post back a comment to this problem with the results of the testing.

Thanks

Nov 03, 2010 | 2001 Ford F150 Styleside SuperCrew

1 Answer

My 1991 lexus will not start when the ignition is turn with the key. The ingine constantly turns over without starting and preceeds to kill my batterie.


Well if it is cranking you need to see if you are getting spark and fuel.....Try turning the ignition on without cranking the motor....You should hear your fuel pump making a whirring sound for about 3 sec.and then shut off...If no sound from pump (which is located in the fuel tank) check the fuel pump fuse If fuse is good check fuel pump relay...If all checks out ok with fuel pump take into consideration when the fuel filter was changed last....I dont recommend adding fuel injection cleaner to your tank without first changing fuel filter...additive is designed to break up debris thus breaking up all trapped particles in filter sending debris through your injectors.... To check for spark pull the #1 spark plug wire and place it on an angle on tip of plug (allowing you to see if spark is present) have an assistant crank engine while you look for spark..... Do not hold spark plug wire in your hand while engine is cranked.... I hope this has helped you

Jun 12, 2010 | Cars & Trucks

2 Answers

Truck will npt start


check to see if your getting spark, if you are make sure your getting fuel. if no spark check coil primary resistance it should be from 1 to 3 ohms. if your not getting spark it can only be a primary ignition problem not a secondary one, example plugs,plug wires. if you are getting spark but no fuel. pull fuel pump relay and jumper wire together #30 and #87 teminals diagnally across from each other under the relay you just pulled out good luck!!!

Jul 19, 2009 | 2000 Chevrolet Tahoe

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