S5King

when i start my car no more then 5 seconds my rpms shoot down to zero how do i fix this??? im lost

dreadseb

Sounds like a bad afm connection, check that first.

S5King

howwww

Icemark

Bad trailing coil if it just the tach and the car stays running.

Bad AFM or major vac leak if the car doesn't keep running

S5King

the car runs and everything but the rpms are at zero soo im so lost

Sideways7

iTrader: (7)

Either bad trailing coil or bad connection going to the trailing coil. Test and see if there is spark from the trailing coils.
FYI, the tach gets its signal from the trailing coils.

helghast7

iTrader: (6)

whey you say the rpms are at zero do you mean on your gauge? or the actual engine rpms?

if its the gauge then check your gauge conections, one way would be to just rev the engine and if the gauge doesnt move then your gauge, although rare may be fubar or just not connected properly

if its the engine then it could be you have a major vaccum problem or hat the people up their said

Sideways7

iTrader: (7)

He already said that the engine ran but the gauge read zero. It is most likely something relating to the trailing coils since that is what sends the signal.

S5King

so if the coil is the prob. how much is a new one lol

RotaMan99

Forget a new one. Many members have good used ones.

Icemark

FC coils almost never fail. It is probably a wiring issue

unW7WZ

also fuse? If its just the tach, its the trailing.if ALL the gauges read zero (cept the speedo) then its fuses. Mine goes on a regular basis (usually when i flood it, about once every 3 months).

helghast7

iTrader: (6)

although i did add a bunch of extra crap i did say a conection problem aswell..... it just sounds prettyier when he says it........its because he's got alot more posts than me........for now muhuhhahahahahahaahaha!!!!

ok im done

S5King

runs clean and everything gauge at 0 but everything is fine i dont know where to look to fix the prob.