no start after heads/cam/intake install
04-27-2009, 10:17 PM
#1
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no start after heads/cam/intake install i just finished installing etp heads/fast intake and a streetsweeper cam. It currently does not start and i feel it is because the car had an old tune on it with a t-rex cam. i checked everything else that i could think of mechanically and electronically. so my question is do you guys think the old tune could be a possibility for the no start?
04-27-2009, 10:51 PM
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i had the same problem after an install similar to yours, check on the drivers side head on the back, there are 2 or 3 ground wires that are attached by a bolt going into the head...it made my car crank for days before i realized it, hooked up the grounds and it fired right up...amazing what a couple ground wires will do!! let me know if this helps, if not i might have some other things to check!!!
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04-27-2009, 11:02 PM
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i checked the ground wires both wires are hooked up with the two wires on one bolt and the one wire on the other bolt just like they were from the factory
04-27-2009, 11:07 PM
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a reason why i'm thinking it was the tune is because i got it tuned with that cam about 4 years ago. Since then i added a few bolt-ons and took some emission stuff off of it. Last year i added a ported throttle body and it ran like crap, the car would shut off after wot runs and when i started it i would have to feather the gas to keep it idleing. The tune was good when i first got it but i never got it retuned after i did more mods to it so......???
04-27-2009, 11:22 PM
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yeah i don't know much about tuning so i thought that might be it but i agree with you i think it should at least start up and run like crap.... i"ll call speed inc tomorrow and see what they think maybe i can get a mail order tune just to get it to start.... i'll keep u guys updated thanks for the info
04-27-2009, 11:45 PM
#13
The reason I was asking about the backfiring was becuase when I finally had mine back up and ready to fire, it would backfire like crazy.
I had my coil harness flipped but it was backfing as soon as I cranked it... You said yours started to backfire sometime after its been cranked for awhile so I dont think its that.
I had my coil harness flipped but it was backfing as soon as I cranked it... You said yours started to backfire sometime after its been cranked for awhile so I dont think its that.
04-28-2009, 09:32 AM
#15
TECH Enthusiast
Check your Cam and crank postion sensors and make sure they are connected. A lot of people miss the crank sensor because it is behind the starter and you have to take it off to check it.
04-29-2009, 03:59 AM
#18
Thats exactly why I ask about codes. Im throwing a camshaft code and alot of times it take 4 or 5 times crankin on it to get it to start now and it likes to backfire when I stop cranking.