Voltage spikes

04DROPTOP · 02-05-2006, 03:18 PM

I started my 04 redfire yesterday. It hadnt been statred for about 2 weeks. When it started, all the gauges jumped to max (speedo, tach, gas, etc.) After about 1 second they returned to normal and everything seems OK.

I read that turning on the heater blower would absorb any voltage spikes when boosting to start. The car was not boosted to start it.

My car has sat in the garage for a few months but was started @ 2 weeks ago.

Should I be concerned?

InfamousSVT · 02-05-2006, 04:08 PM

Did you have the battery unhooked at any time during the time you didn't drive your car? When you start your car and all the gauges reset it's usually due to the battery being replaced of the computer resetting itself.

I think you're fine

04DROPTOP · 02-05-2006, 06:34 PM

no battery was not unhooked/replaced. I do remember someone talking about the computer resetting sometimes.

Thanks

cobra2112 · 02-05-2006, 10:44 PM

Happen to me a few months ago also. I haven't had any problems. My cobra sits a few weeks at a time too. My guess is a diagnostic check the computer runs every so often to check proper gauge function. Just a guess. I have heard these cars will throw a check engine light for a faulty windsheild washer fluid motor. Not sure if I believe that but who knows. Cars today have some really great self diagnostic features. Just imagine when ODB III comes along.

Keep us posted if you run into a problem

02-05-2006, 03:18 PM	#1
04DROPTOP SCMC Member Join Date: Mar 2005 Location: Princeton, WV Posts: 24	Voltage spikes I started my 04 redfire yesterday. It hadnt been statred for about 2 weeks. When it started, all the gauges jumped to max (speedo, tach, gas, etc.) After about 1 second they returned to normal and everything seems OK. I read that turning on the heater blower would absorb any voltage spikes when boosting to start. The car was not boosted to start it. My car has sat in the garage for a few months but was started @ 2 weeks ago. Should I be concerned?

02-05-2006, 04:08 PM	#2
InfamousSVT Registered User Join Date: Oct 2004 Location: Gastonia, NC Posts: 1,960	Did you have the battery unhooked at any time during the time you didn't drive your car? When you start your car and all the gauges reset it's usually due to the battery being replaced of the computer resetting itself. I think you're fine __________________ 1994 Black on Black SVT Coupe 2004 SVT Cobra Competition Orange - SOLD 1979 Ghia Coupe - SOLD 1994 Chevy S-10 - DailyDriver

02-05-2006, 10:44 PM	#4
cobra2112 Registered User Join Date: Jun 2004 Location: Northeast Philly Posts: 53	Happen to me a few months ago also. I haven't had any problems. My cobra sits a few weeks at a time too. My guess is a diagnostic check the computer runs every so often to check proper gauge function. Just a guess. I have heard these cars will throw a check engine light for a faulty windsheild washer fluid motor. Not sure if I believe that but who knows. Cars today have some really great self diagnostic features. Just imagine when ODB III comes along. Keep us posted if you run into a problem __________________ Silver 04 Coupe, Magnaflow Catback, MAC CAI, Accufab Throttlebody. H&R Sport Springs,Steeda C&C Plates, Gordsford Heat Exchanger.

02-05-2006, 06:34 PM	#3
04DROPTOP SCMC Member Join Date: Mar 2005 Location: Princeton, WV Posts: 24	no battery was not unhooked/replaced. I do remember someone talking about the computer resetting sometimes. Thanks

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