Hard Start Gen 3

pokeyl · Tuesday at 7:19 PM

Anyone having problems starting any time the battery is not fresh from the charger? I have found the voltage drop when starting makes the starter relay chatter!!! Hard to start.

I have changed the Starter and ground cable at the battery. As well as the starter relay, No Difference. One time i ran a set of jumper cabled the add extra amps to the system. Still had relay chatter.

My current solution is a Solid State Relay. It will not chatter as it has no moving parts and will stay energized as low as Five Volts.

First test went well. Will test all summer and see if it is a "Total Fix."

pokeyl · Tuesday at 10:37 PM

Finished

MoparMap · Wednesday at 8:04 AM

Have you tried different batteries as well? I've had a couple issues in the past where I'd drop low enough on the voltage when cranking that it would reset my trip meter, but I think I also may have had an ASD fuse that was on the way out. Even when it dropped that low though I don't recall the starter having any issues. Sounds like you've tried everything else but the battery at this point.

pokeyl · Wednesday at 8:47 AM

My Bad. I have had 3 new batteries in the car AGM, standard lead acid, and Litho-ion. some rated as high as 950 CCA. Problems with all of them. I have not changed the positive battery cable.

J TNT · Wednesday at 11:12 AM

Check your negative connections at the frame and block . They can have high resistance .

Viper Specialty · Wednesday at 11:30 AM

Something else is wrong with your car. Absolutely NOT normal.

Goggles Pizano · Wednesday at 11:51 PM

You need to measure voltages and resistance. You fix is not a fix as the root cause is not known nor fixed.

pokeyl · Thursday at 1:51 PM

The Root cause is starting the viper 20 times, with only a 2 min autocross run to recharge? At the end of the day it wont start. The heat makes it worse.

If I drive around town there is never a problem.

If I take the relay fuse box cover and open the hood it helps. (bad in the rain)

Swap the start relay to a cold one also seems to fix the issue. Heat-soke?

I'll take any input you have.

Car has headers, no cats.

If a $50 solid state relay gets me good starts all day at the autocross that is a fix for me.

I have lost runs the no start problem.

Hard Start Gen 3

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