Intermittent Start Failure (99 Spyder GS)

[MoparDSM]

Just bought this car recently and the seller told me that it had problems starting but gave me a couple of methods to use to start it.

One was to put the car in ACC and as soon as you heard the relay behind the radio click to rapidly switch the key to on. This worked when I tried it. The other method was to put in on ACC and almost immediately switch it to on, which also worked despite being a bit tricky to do.

When I got it home and tried to start it (after successfully starting it 4 or 5 times) I stopped hearing the click behind the radio. Now I can only get it to start after about 4 times of the ACC-ON method and when I do that it makes that electrical buzz kind of like when you try to start a car that is already started or start a car with a dead battery. So sometimes using this method I get nothing, buzzing, or it starts.

Does this sound like an issue with that relay, a wiring problem, or something completely different like an issue with the ECU? Any help is appreciated, thanks!

 

[ed1380]

if less than 3 days just take it to him and get you money back.

 

[MoparDSM]

It's been more than 3 days. I bought it knowing about the problem and wanting to fix it.

 

[1995gstdsm]

i would check over the whole car and make sure all your electrical components and wires are tight. Could just be a faulty ignition

 

[OutKastGSX]

When i first got my car it did this first couple of times. i replaced the battery and terminals. it hasent done it again so far. maybe give the terminals a shot first. There cheap, like 5-8 bucks.

 

[MoparDSM]

I know this is super old at this point - but it ended up being that the balance shaft belt snapped and got wedged in the crank sensor. After repairing that issue it still wouldn't start and it was the replacement cam angle sensor I got from Autozone. Replaced it with one from Advance and it still didn't worked. Grabbed a handful of OEM sensors from the junkyard and that resolved it.