Sometimes don't start

[tccrab]

Originally Posted by max76

Sorry jonszr1...i don't understand what you write.
May you explain better??Sorry, with simple words

Watch the Voltage Gauge on dash when pushing down on clutch.
If needle moves, clutch switch is OK.

Your no-start is related to temperature, correct?
The next time you have a no-start, measure the battery voltage with a volt meter.
It is possible to have a battery that is weak when the car is hot.
It could also be that your starter is weak when it is hot.

TomC
"Crabs"

[VetteVet]

I've been watching this thread and decided to offer my .02. I had temperature related problems with my starter not cranking after a hot shutdown, but would start fine after the car cooled down. What I found was that a modification to the solenoid was needed. For anyone who has disassembled their starter, you will be familiar with the tapered rubber "bumper" on the solenoid slug. It seats tightly into the cavity in the stamped metal solenoid cover. What I suspected was that the air in that cavity was heating up and then when the engine was shut down, the cooling air was drawing a vacuum in the cavity and preventing the slug from being moved during starting. After sitting for a while, the slight amount of leakage between the shaft and "bumper" was enough to release the vacuum and allow a start. I ground a slot in the "bumper" to prevent it from sealing against the solenoid cover. I have not had any problems since then. BTW, no other work was done to the starter, so I am fairly sure that it was the mod that solved a design problem with the solenoid.

[DDSLT5]

Originally Posted by jonszr1

best way to ck for the clutch switch is to watch the volt gauge while trying to start the car. release and press in om the clutch id the gauge goes down when you press it in the switch is ok

Good way to burn out the clutch switch real quickly.

[DDSLT5]

Originally Posted by VetteVet

I've been watching this thread and decided to offer my .02. I had temperature related problems with my starter not cranking after a hot shutdown, but would start fine after the car cooled down. What I found was that a modification to the solenoid was needed. For anyone who has disassembled their starter, you will be familiar with the tapered rubber "bumper" on the solenoid slug. It seats tightly into the cavity in the stamped metal solenoid cover. What I suspected was that the air in that cavity was heating up and then when the engine was shut down, the cooling air was drawing a vacuum in the cavity and preventing the slug from being moved during starting. After sitting for a while, the slight amount of leakage between the shaft and "bumper" was enough to release the vacuum and allow a start. I ground a slot in the "bumper" to prevent it from sealing against the solenoid cover. I have not had any problems since then. BTW, no other work was done to the starter, so I am fairly sure that it was the mod that solved a design problem with the solenoid.

Pics are necessary!

[max76]

Originally Posted by VetteVet

I've been watching this thread and decided to offer my .02. I had temperature related problems with my starter not cranking after a hot shutdown, but would start fine after the car cooled down. What I found was that a modification to the solenoid was needed. For anyone who has disassembled their starter, you will be familiar with the tapered rubber "bumper" on the solenoid slug. It seats tightly into the cavity in the stamped metal solenoid cover. What I suspected was that the air in that cavity was heating up and then when the engine was shut down, the cooling air was drawing a vacuum in the cavity and preventing the slug from being moved during starting. After sitting for a while, the slight amount of leakage between the shaft and "bumper" was enough to release the vacuum and allow a start. I ground a slot in the "bumper" to prevent it from sealing against the solenoid cover. I have not had any problems since then. BTW, no other work was done to the starter, so I am fairly sure that it was the mod that solved a design problem with the solenoid.

May you put someone picture please???
Thanks

[max76]

Originally Posted by tccrab

Watch the Voltage Gauge on dash when pushing down on clutch.
If needle moves, clutch switch is OK.

Your no-start is related to temperature, correct?
The next time you have a no-start, measure the battery voltage with a volt meter.
It is possible to have a battery that is weak when the car is hot.
It could also be that your starter is weak when it is hot.

TomC
"Crabs"

Yes, only with hot temperature, but not always...sometimes there is something work bad....

This test:Watch the Voltage Gauge on dash when pushing down on clutch.
If needle moves, clutch switch is OK.
I must do it when i have strat problem??
I have see the dash light go down when i turn the key and the engine don't run.
For this i think that is a problem of starter...

[jonszr1]

Originally Posted by DDSLT5

Good way to burn out the clutch switch real quickly.

sure if one does it all the time .but doing it once in a while when having a starting problem shouldnt hurt it .

[jonszr1]

you could be right .starter might be drawing too much voltage

[VetteVet]

I can get some pictures this evening when I get back home from work. As it so happens, I have the motor out of the car right now for modifications.

[max76]

Originally Posted by VetteVet

I can get some pictures this evening when I get back home from work. As it so happens, I have the motor out of the car right now for modifications.

We wait your picture!!!!!