Question about 1998 Chrysler Concorde

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Our 98 3.2 l no spark ,, no injector pulse but the fuel pump run . i change the cam sensor the crankangle sensor , the pcm and wont fire

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A computer scan is needed,not knowing your kownledge level about cars it can get expensive,i suggest rent a scaner so you see what ecm is doing

Posted on Sep 29, 2010

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Wont start. it has injector pulse but no spark


is there power and ground to the coils?

If there is injector pulse than the crank sensor has to be good. Injector pulse and spark are both calculated off from the signal from the crank sensor.

Checking for power and ground to the coils is a good place to start. If that checks out than either there is a wiring issue in between the PCM and the coils or possible the PCM has failed.

Nov 20, 2015 | 2001 Pontiac Firebird Trans Am

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My 2000 Pontiac grand prix stop running the other day. It turns over just fine but it won't fire up could it be anything other than the fuel pump. ( I really don't want to change that)


its pretty simple to check for fuel pressure. If there is no fuel pressure than the next step is to check for power and ground at the pump. if those check out then a new fuel pump should fix the problem.

your engine needs 3 things to run. fuel, spark, and compression. if you have fuel pressure than check for spark. if there is no spark than there could an issue with a crank or cam sensor. If the crank sensor is bad than typically there will be no injector pulse as well. after cranking it over a couple times pull a plug and see if it is wet. if it is you know the crank sensor is working and the fuel pump is working and you have a spark issue. If it is dry than there is a fuel delivery issue (fuel pump/injector/injector pulse/etc.)

there are many things you can check very easily to help narrow down the possibilities.

Aug 15, 2015 | Pontiac Cars & Trucks

1 Answer

96 T100 (3.4), will only run for 2-3 seconds then quit, change fuel filter, pump, cam sensor and crank sensor still won't run, but will run on ether. Where to go next?


What you are telling me is the engine is firing the plugs but not getting fuel.
When you changed the fuel pump and filter, did you check the fuel pressure at the rail ?
Are the injectors getting power and ground pulse ??

Dec 21, 2012 | Cars & Trucks

1 Answer

95 olds 88 3.8l wont start i have fuel and spark......i had loss of power on the way home from work and it died in my drive way and now wont restart it does have a new crank sensor and fuel pump


It may be time for a pro to look at it. You dont want to guess wrong on a PCM. Are you sure you have Injector pulse? One side of the fuel injectors should have power and the pcm grounds them to make them open. If the engine runs on carb cleaner its not getting fuel.

Jun 02, 2012 | 1995 Oldsmobile 88

1 Answer

We have a 1995 540i and have no power to driver side fuel injectors. Is there a fuse if so where would it be? If not what should we be looking for. Thank you for your time.


Hello---Sounds like your injectors are not firing. I doubt ALL of your injectors clogged or failed at once...Troubleshoot a lack of input signal to PCM from crank position sensor or cam position sensor, or bad PCM driver circuit. Injectors should usually have power when key is on. PCM grounds other side of injector circuit to pulse the injectors...
Fuse #23 will be the pump fuse, you should have 50 psi of pressure at the fuel rail.
I hope this helps.

Jul 26, 2011 | BMW 530 Cars & Trucks

1 Answer

I have a 2001 Explorer Sport Trak and it don't want to start. We have checked all the sensors (crankshaft, cam trigger, fuel pump pressre is 65). What is the tank fuel pressure sensor voltage reading. ...


The first thing to check would be spark. This can be done by connecting a spark plug tester to a plug wire while the engine is cranking. The tester must be grounded to the engine block for a good electrical connection.. Your fuel pump pressure is OK.
The problem should be electrical so check
1. No voltage to the fuel injectors (blown injector fuse or bad relay)
2. No pulse signal to the injectors from the PCM (no crank or cam sensor input to the PCM, or a bad driver circuit in the PCM, or a wiring harness problem)
3. A shorted fuel injector (robs voltage from the other injectors so none will operate)

Jan 08, 2011 | 2001 Ford Explorer Sport Trac

1 Answer

I was driving and my car died and wont restart. long cranks but wont turn over. I changed the battery still no start.I checked faults codes and got p0340. I changed the cam sensor and code went away. I...


Make sure battery has a full charge. 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.

Jun 26, 2017 | 2003 Chrysler PT Cruiser

2 Answers

99 durango 165,000 miles runs good when running. It had the PCM changed when I bought it. Did a tune up and all maintenance. It would shut down after a while. Replaced coll temp,wire harness to PCM, map...


Make sure they put the right pcm in it. The dealer can tell you with the vin#. Then check to see that your pcm has that same number, letters etc. All may not be needed. Try to have the pcm#s when you call them

Apr 30, 2010 | 1999 Dodge Durango

1 Answer

I have a 1996 328is. After you run the engine at about 2500 rpm for a couple of minutes, it will misfire, and the reason for the misfire is it looses injector pulse to a cylinder. If you turn the car off...


The 1st thing u need to do here is run a trouble code test on the engine control system, it is called an OBD 2 trouble code test, but based on the symptom it sounds like u either have a defective camshaft or crankshaft position sensor, these sensors signal the PCM (powertrain control module) when the cylinder should receive spark and when the injectors should fire, if the signal is erratic or just stops all kinds of weird things happen, erratic fuel injector pulse for sure, but as I 1st stated a trouble code test is needed to pin down the sensor, if no codes exist hen it is poss the PCM is defective.

Sep 15, 2009 | 1996 BMW 318

2 Answers

2002 nissan sentra it wont start i got fire on the spark plugs bu


Injector pulse comes from Cam sensor, If you have a BAd CAMSHAFT sensor you will not get injector pulse, replace sensor and that should solve your problem. Good Luck and thanks for using FIX YA

Jan 20, 2009 | 2002 Nissan Sentra

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