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im sick of this dang car. its an 89 with only 130k on it and i just put a fuel pump and filter on it. 300bucks and now, as before, it decides to not start. for example just 5 minutes ago i was at wally world for ten minutes came out wouldnt start. it had fuel and spark. im just gonna get rid of it i cant fix it

Where are you located?

When was the CPS replaced last. That may be your issue

im in western, ky

camshaft position sensor was replaced about 6 months ago, magnet still intact.

You may have gotten a bad CPS. That happens.

i just went outside and it started up. im really leaning towards it being heat related. it sat for about 2 hours and i just went outside (around 55*) and it fired up no problem 4 times in a row. WHAT GIVES im taking it to a mechanic if i cant figure this out by thursday

Mine was replaced 2 months ago with an ac delco unit and it is already going bad. Duralast crank sensors are junk so do not get one of those.

murderedout wrote:im in western, ky

camshaft position sensor was replaced about 6 months ago, magnet still intact.

Have you ever replaced the Crankshaft Positions Sensor ? You are perfectly describing a Crank Sensor failure....

Were the injectors firing ? You would need a noid light or a certain bulb to test this.... You can have fuel but if the injectors are not firing it'll never start..


The crank sensor is a 2 part sensor, 3x's pulse for spark and 18x's pulse for fueling... This can fail on one side or the other or simply fail completely...

Jrs3800 wrote:

murderedout wrote:im in western, ky

camshaft position sensor was replaced about 6 months ago, magnet still intact.

Have you ever replaced the Crankshaft Positions Sensor ? You are perfectly describing a Crank Sensor failure....

Were the injectors firing ? You would need a noid light or a certain bulb to test this.... You can have fuel but if the injectors are not firing it'll never start..


The crank sensor is a 2 part sensor, 3x's pulse for spark and 18x's pulse for fueling... This can fail on one side or the other or simply fail completely...

No I have not replaced the crank sensor. I didn't know I had one! Is there a write up on it or any hints or tips on how to do it? I have a FSM. Any pictures would be great!

The crank sensor is located behind the harmonic balancer

oh im sure this weekend will be fun replacing that thing... should i put a new HB on it to while its off?

just out of curiosity is yours equipped with VATS or PASS Key? does a light show as SECURITY while starting? that can cause a no-start condition that magically seems to go away on its own, and in my case heat exasperates the condition.

nickdalzell1 wrote:just out of curiosity is yours equipped with VATS or PASS Key? does a light show as SECURITY while starting? that can cause a no-start condition that magically seems to go away on its own, and in my case heat exasperates the condition.

no it doesnt have that style key. But i drove it 4 hours today all highway and when i parked it at my apartment i let it idle for 2 minutes and it died. im thinking the icm is getting to hot?

murderedout wrote:

nickdalzell1 wrote:just out of curiosity is yours equipped with VATS or PASS Key? does a light show as SECURITY while starting? that can cause a no-start condition that magically seems to go away on its own, and in my case heat exasperates the condition.

no it doesnt have that style key. But i drove it 4 hours today all highway and when i parked it at my apartment i let it idle for 2 minutes and it died. im thinking the icm is getting to hot?

That's the way the ICM on the Magnavox ICM I use to have would act when it was in the process of "giving up the ghost". - BC

I remember my Uncle had this problem in his old Buick. He gave up, sold it, and bought a 5.0 Camaro instead.

If I were you, I'd give up and buy a camaro. But that's just me.

1oldman wrote:

murderedout wrote:

nickdalzell1 wrote:just out of curiosity is yours equipped with VATS or PASS Key? does a light show as SECURITY while starting? that can cause a no-start condition that magically seems to go away on its own, and in my case heat exasperates the condition.

no it doesnt have that style key. But i drove it 4 hours today all highway and when i parked it at my apartment i let it idle for 2 minutes and it died. im thinking the icm is getting to hot?

That's the way the ICM on the Magnavox ICM I use to have would act when it was in the process of "giving up the ghost". - BC

so your saying its most likely the icm and or coils? im gonna take it to autozontastic tommorrow and have them test it a few times and hopefully it fails and we can put my car troubles to rest...except the trunk leak and the front window leak

murderedout wrote:

Jrs3800 wrote:

murderedout wrote:im in western, ky

camshaft position sensor was replaced about 6 months ago, magnet still intact.

Have you ever replaced the Crankshaft Positions Sensor ? You are perfectly describing a Crank Sensor failure....

Were the injectors firing ? You would need a noid light or a certain bulb to test this.... You can have fuel but if the injectors are not firing it'll never start..


The crank sensor is a 2 part sensor, 3x's pulse for spark and 18x's pulse for fueling... This can fail on one side or the other or simply fail completely...

No I have not replaced the crank sensor. I didn't know I had one! Is there a write up on it or any hints or tips on how to do it? I have a FSM. Any pictures would be great!

I give up! Many have told you the symptoms you describe perfectly fit the Crank position sensor, and I have as well in your other thread here:

viewtopic.php?f=20&t=31708&start=20

Now, in all honesty, the old magnavox ignition systems were prone to failure, and that is probably not helping, . My suggestion now is to just do both and be done with it.

Unless you still plan on junking it . . .

im taking the icm to autozone today to find out if its bad. ill be sure they test it multiple times. hopefully it fails! an EPIC FAIL! so i can put this problem behind ALL OF US.