Question about 2001 Pontiac Grand Am SE

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2001 pontiac grand am w/ 2.4l 4cyl

I have checked primary and secondary resistence in the coils both are good. I checked for a trigger signal at the ignition module I have replaced the crankshaft and camshaft position sensor and the spark plugs. the car all off a sudden lost power, it was missing and then died, we could get it to start by depressing the gas pedal but it was missing and backfiring and if you let off the gas it would die. I have done all the above and now it wont even start. for a brief moment it will sound like it wants to crank and then it just whines (like the sound of a starter engaging but not turning motor over) and sometimes when you try to crank it, it will make an awful grinding noise, my brother let me use his obdII scanner and all it told me was multiple misfire, I had previously thought that it might be bad gas but I siphoned some out and took the filter off and both seemed fine I am baffled please help

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  • mserepair Dec 21, 2008

    i have the exact same problem to the tee

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I disagree with the testing of coils, it has proved fault many times. I would check fuel rail pressure, as fuel pump commonly lose there abilty to build pressure but don't totally die. A DIS spark system should have the abilty to jump 1" with proper battery voltage. With good plugs the spark should be blue in color. The starter may be getting hot, or if it comes against compression when the engine attempts to start, it will do it's job and go back in.

Posted on Sep 24, 2008

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How do I check the cam shaft sensor on a 2001 Grand AM?

Posted on Apr 06, 2011

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2001 s10 no spark no power to fuel pumpe eng cranks over


Hello Gary,

Lets start with the no spark...


Diagnosis & Testing

http://www.autozone.com/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f803714e1


The Distributor Ignition (DI) system is controlled by the Powertrain Control Module (PCM).

The Distributorless Ignition System (DIS) is controlled by the Powertrain Control Module (PCM).

Testing The Ignition Coil

  1. Remove the ignition coil(s).
  2. Using an ohmmeter, check the resistance between the primary terminals on the underside of the coil. The resistance should be 0.50-0.90 ohms.
  3. Check the resistance between the secondary terminals. It should be 5000-10,000 ohms.
  4. If the coil failed either test, replace the coil.
If the coils(s) are good check the ignitions leads by measuring their resistance. (Multi Meter required.) If the coil(s) and leads are good

Secondary Spark Test
http://www.autozone.com/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f80371564


Please provide some details on your engine option 4 cylinder/6cylinder 2 WD 4 WD. Mileage...

Jul 24, 2016 | 2001 Chevrolet S-10

1 Answer

I have a 2001 roadking police bike. it has no spark. the bike cranks fine the fuel pump works, I checked all fuesess relays. checked the ckp sensre for metal ,checked the pickup senser metal. checked




Are the plugs installed because without compression you will not get ignition/spark.

Are there any codes set???

Is the ignition fuse okay??? Is ECM fuse okay?

Of course first you need power to the coil which should be there whenever the ignition and run switches are on if so see below:


Are the plugs installed

Remove the coil. THEN set your ohmmeter scale to RX1 and place ohmmeter leads on the primary coil windings A (front of coil) to B (middle of coil), B to C (front of coil) and check for primary coil winding resistance which normal resistance range is 0.5-0.7 ohms. If primary resistance is not within this range check out test results below.


Ignition Coil Secondary Circuit Test

With the ignition coil removed from the motorcycle and the ohmmeter set to the RX1K scale place the ohmmeter leads on the secondary coil windings B (middle terminal) to

R (rear secondary terminal/socket), B to F (front secondary terminal/socket) and check for secondary coil winding resistance which normal resistance range will be 5.5-7.5K ohms. If secondary resistance is not within this range check out test results below.


Test Results

A low resistance value indicates a short in the coil winding which requires coil replacement.


A high resistance value might indicate that there is some corrosion/oxidation of the coil terminals requiring the coil terminals to be cleaned and the resistance test then repeated and if after the test is repeated the resistance is still high after the terminals were cleaned the coil must be replaced.

If there is an infinite ohms or no continuity) resistance value the coil is open and must be replaced.


If you have spark, it sounds like either the sensor in the timing cavity of the engine is bad or the electronic ignition unit is bad.


Oct 18, 2014 | Cars & Trucks

1 Answer

NO SPARK FROM COIL


Try checking primary and secondary resistances of coil if ok ignition module or trigger coil is a common problem or the problem i had with my kc laser was the air gap for the trigger in the dizzy

Aug 15, 2013 | Cars & Trucks

1 Answer

IGNITION COIL TESTING DODGE 2.7 INTREPID 2004


to check ignition coil, you need a digital volt meter put it on the ohms scale check primary resistance across primary coil positive terminal to secondary high voltage terminal. primary resistance should be 0.6 to 0.9 ohms and secondary resistance should be 6 to 9 kilo ohms. if you see zero ohms more likely ignition coil has open circuit.

Aug 26, 2012 | Dodge Cars & Trucks

1 Answer

How do you tell if the coil packs are bad


With an OHM meter to check the resistance

Contributing Member
mtl_4runner-2548.gif?dateline=1060047767
Join Date: Jul 2003 Location: Montreal, QC Canada Posts: 8,805 im_aim.gif So you got codes P0300, P0304 and P0305

You need to check primary and secondary resistences, not just primary as you did.
Primary = 0.67 - 1.05 ohms (You may have a bad multi meter if all read the same)
Secondary = 9.3k - 16k ohms Contributing Member
mtl_4runner-2548.gif?dateline=1060047767
Join Date: Jul 2003 Location: Montreal, QC Canada Posts: 8,805 im_aim.gif So you got codes P0300, P0304 and P0305

You need to check primary and secondary resistences, not just primary as you did.
Primary = 0.67 - 1.05 ohms (You may have a bad multi meter if all read the same)
Secondary = 9.3k - 16k ohmsSo you got codes P0300, P0304 and P0305

You need to check primary and secondary resistences, not just primary as you did.
Primary = 0.67 - 1.05 ohms
Secondary = 9.3k - 16k ohms

Jun 29, 2010 | 2000 Chevrolet Blazer

1 Answer

2001 pontiac grand am 3.4 V-6 Was running fine, stopped. Tapped on igniton coils, started again. Could tap on them and it would hesitate or stop. All coils with good primary and secondary resistance. All...


Well I can tell you no matter what your gauge says on the groundwires to the system..... you've got a bad ground or a hot touching ground somewhere and I think that you should recheck your steps. Not all books are always correct in their schematics when it comes to your individual car especially if your not the first owner and don't have a complete history of work performed prior to you owning it. ie. stereo, drive lights, electrical modifications or repairs etc. etc. I would start with the body ground myself. clean its application area and make sure you are getting a true metal to metal contact. As with all your connections.

May 04, 2010 | 2001 Pontiac Grand Am SE

1 Answer

2001 ram 1500:3.9l v6 2wd. I have trouble codes p0300:p0303:p0304 coming up how do I fix them and would they cause my truck to bog down around 50 mph? It runs good and strong under 50 but slow to pickup...


code 300 random cylinder misfire, code 303 cylinder 3 misfire detected code 304 cylinder 4 misfire detected. check the spark plug wires 3 and 4 inline tester for constant fire. also check the spark plugs , clean and reset the gap if necessary. if all is good check the coil terminals for corrosion. if this is all correct then check the coil with a ohm meter for primary resistance by attaching the leads to the positive and negative terminals. then check the secondary resistance by hooking one of the ohmmeter leads to the center terminal and the other lead to one of the outer terminals the resistance for primary test should be 0.95 to 1.20 ohms and the resistance on the secondary side should be 11,300 to13,300 ohms. hope this will help!!!

Apr 27, 2010 | 2001 Dodge Ram 1500 Truck 2WD

3 Answers

I have power to the HEI distributor, but nothing down the plug wires. I would like a test to see if the internal(removable) coil is good, maybe a resistance value


Below is a generic proceedure for checking your ignition coil.

Ignition Coil Resistance
  • With the key off and the battery lead to the ignition coil disconnected, use an ohmmeter to measure the primary and secondary winding resistance of the ignition coil. when checking the resistance across the windings, pay particular attention to the meter reading. if the reading is out of specifications, even if it is only slightly out, the coil or coil assembly should be replaced.
  • To check the primary windings, calibrate an ohmmeter on the X1 scale and connect the meter leads to the primary coil terminals to test the winding.
f22-39.gif Ohmmeter connected to primary coil terminals.
  • An infinite ohmmeter reading indicates an open winding. The winding is shorted if the meter reading is below the specified resistance. Most primary windings have a resistance of 0.5 to 2 ohms, but the exact manufacturer's specifications must be compared to the meter readings.
  • To check the secondary winding, calibrate the meter on the X1,000 scale and connect it from the coil's secondary terminal to one of the primary terminals.
f22-40.gif

Oct 30, 2009 | Chevrolet Impala Cars & Trucks

1 Answer

P1370 and p1350 trouble codes


P1370 Ignition Control (IC) Module 4x Reference too many pulses

P1350 Ignition Control System

Ok, these codes are signaling a malfunction within the Ignition control module. it is sending way to many signals to the coil. i recommend testing the coil for damage and irregular resistance. i will explain how to do this below. i would replace the module as well. The control moduel is Located Under hood, center, rear engine area, above valve cover, mounted in base of ignition coil pack

Ignition Coil Test Procedures__

Ignition Coil Resistance

* with the key off and the battery lead to the ignition coil disconnected, use an Ohmmeter to measure the primary and secondary winding resistance of the ignition coil. when checking the resistance across the windings, pay particular attention to the meter reading. if the reading is out of specifications, even if it is only slightly out, the coil or coil assembly should be replaced.
* To check the primary windings, calibrate an ohmmeter on the X1 scale and connect the meter leads to the primary coil terminals to test the winding.

5d041b0.jpg

* An infinite ohmmeter reading indicates an open winding. The winding is shorted if the meter reading is below the specified resistance. Most primary windings have a resistance of 0.5 to 2 ohms, but the exact manufacturer's specifications must be compared to the meter readings.
* To check the secondary winding, calibrate the meter on the X1,000 scale and connect it from the coil's secondary terminal to one of the primary terminals.


813a25f.jpg
# A meter reading below the specified resistance indicates a shorted secondary winding. An infinite meter reading proves that the winding is open.
# In some coils, the secondary winding is connected from the secondary terminal to the coil frame. When the secondary winding is tested in these coils, the ohmmeter must be connected from the secondary coil terminal to the coil frame or to the ground wire terminal extending from the coil frame. Many secondary windings have 8,000 to 20,000 ohms resistance, but the meter readings must be compared to the manufacturer's specifications. The ohmmeter tests do not indicate such defects as defective insulation around the coil windings, which causes high-voltage leaks.

May 17, 2009 | 1997 Cadillac DeVille

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