H/C swap ls2 no spark
03-30-2011, 07:19 PM
#1
Teching In
Thread Starter
Join Date: May 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
H/C swap ls2 no spark I swapped heads for Performance Induction 245 LXR and a custom cam from Flowtech. The car started and ran for a good 10 minutes. The tuner said that every code for the cam position sensor was showing. Turned car off for maybe 2 minutes. Now nothing!!
Pulled out a spark plug and cranked and had no spark. Tach also showed 0 during all of this. I have searched as seems that it would still start and run with the cam shaft sensor not reading. Heck, it did run for a while!! What could have went wrong in the time it took to put in the wide band???
Going to bring the car home tomorrow and possibly check all the grounds, but what else should be checked? I'm thinking replace the cam shaft position sensor.
Thank you guys. It's been a painful journey!!!
Pulled out a spark plug and cranked and had no spark. Tach also showed 0 during all of this. I have searched as seems that it would still start and run with the cam shaft sensor not reading. Heck, it did run for a while!! What could have went wrong in the time it took to put in the wide band???
Going to bring the car home tomorrow and possibly check all the grounds, but what else should be checked? I'm thinking replace the cam shaft position sensor.
Thank you guys. It's been a painful journey!!!
03-30-2011, 08:23 PM
#4
Teching In
Thread Starter
Join Date: May 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Ok sorry no info for you guys. I thought I had a sig
2005 LS2 GTO M6
P.I LXR 245 cyl heads
24x-25x flowtech cam
Fast 102 intake
Nick Williams 102 TB
Texas speed 100 MAF
Kooks 1 7/8 SS headers
2005 LS2 GTO M6
P.I LXR 245 cyl heads
24x-25x flowtech cam
Fast 102 intake
Nick Williams 102 TB
Texas speed 100 MAF
Kooks 1 7/8 SS headers
03-30-2011, 08:25 PM
#5
Teching In
Thread Starter
Join Date: May 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Well the ground I'm not sure. It's a long story but car was at the shop and I went and finished putting it together today. It is possible that it didn't get put on before I got there. I do know I never touched it. Everything was buttoned up except pushrods. I will look at it tomorrow and let you know if that was it
Thanks for the guidance. Stay tuned....
Thanks for the guidance. Stay tuned....
03-30-2011, 08:28 PM
#6
Staging Lane
Join Date: Aug 2007
Posts: 80
Likes: 0
Received 0 Likes
on
0 Posts
The one im speaking of is very low. I didnt know it was there until i removed my head. It can very easily be missed. I made a mental note so i will reconnect the wire before i install the head.
03-30-2011, 08:35 PM
#7
Teching In
Thread Starter
Join Date: May 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Ya with all the hands that were working on it, I'm sure it could get missed. And you think that the car would start though the first couple of times until we moved it? Maybe it was just laying inthe right spot and we bumped it off.
Trending Topics
03-31-2011, 10:25 AM
#10
Teching In
Thread Starter
Join Date: May 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
I had originally taken the car to the tuner with no MAF, and he basically said I was a ******* backwoods hillbilly if I thought SD was going to work better... So I bought the MAF. He said that the car would never run good without the MAF, and SD was not good for my power range...
03-31-2011, 11:08 AM
#11
TECH Fanatic
iTrader: (9)
Join Date: Mar 2004
Location: Pasadena Texas
Posts: 1,318
Likes: 0
Received 0 Likes
on
0 Posts
I can't wait to get it to the track and find out!!!
I had originally taken the car to the tuner with no MAF, and he basically said I was a ******* backwoods hillbilly if I thought SD was going to work better... So I bought the MAF. He said that the car would never run good without the MAF, and SD was not good for my power range...
I had originally taken the car to the tuner with no MAF, and he basically said I was a ******* backwoods hillbilly if I thought SD was going to work better... So I bought the MAF. He said that the car would never run good without the MAF, and SD was not good for my power range...
The car will run well with a MAF. I'm still running one. If you plan on driving it year round on the street the MAF is better. It allows for temp, and weather changes better then SD. The 85mm MAFs are good for 600rwhp. If tuned correct SD will work. Most cars run SD in FI applications
03-31-2011, 12:15 PM
#12
10 Second Club
iTrader: (2)
Join Date: Sep 2009
Location: Cape Gir., MO
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
I can't wait to get it to the track and find out!!!
I had originally taken the car to the tuner with no MAF, and he basically said I was a ******* backwoods hillbilly if I thought SD was going to work better... So I bought the MAF. He said that the car would never run good without the MAF, and SD was not good for my power range...
I had originally taken the car to the tuner with no MAF, and he basically said I was a ******* backwoods hillbilly if I thought SD was going to work better... So I bought the MAF. He said that the car would never run good without the MAF, and SD was not good for my power range...
03-31-2011, 12:28 PM
#13
TECH Fanatic
iTrader: (9)
Join Date: Mar 2004
Location: Pasadena Texas
Posts: 1,318
Likes: 0
Received 0 Likes
on
0 Posts
most people that do not have good tuning skills would say this. a mass air tune allows you to be slightly off on the tune and let the mass air make up for the imperfections. an sd tune must be dead on right to get the best performance. ive drove my car year round, all kinds of different wether and not had a single problem. to each his own though.
03-31-2011, 02:43 PM
#16
Staging Lane
Join Date: Aug 2007
Posts: 80
Likes: 0
Received 0 Likes
on
0 Posts
Are you sure? There are 2 of them. One is visible, that gets bolted with the wire harness bracket and the other is not visable. It bolts just above where the head meets the deck. You would never know it was there.
03-31-2011, 04:52 PM
#18
Teching In
Thread Starter
Join Date: May 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
Damn.... No I'm not sure now. I think only one was bolted down. I had
My hand on all the wiring harness and couldn't find anything not connected though.
wish shop wasn't 45 min away!!
But I'm pretty sure only one bolt was in te head. Thank you sir! I'll know more tomorrow
My hand on all the wiring harness and couldn't find anything not connected though.
wish shop wasn't 45 min away!!But I'm pretty sure only one bolt was in te head. Thank you sir! I'll know more tomorrow
04-01-2011, 01:02 PM
#19
Teching In
Thread Starter
Join Date: May 2010
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
This gets worse!! I am at shop now as only one ground is plugged in! Unfortunately I can not locate the missing ground. I have lifted the car and looked to see if it was under there, but nothing!!! Where should I possibly look for this thing? Like I said I jar checked everywhere for it. Where does the otter end go? The side not connected to the head???!! Fml! Shop thinks I am retarded and didn't bolt cam in. Please help! Haha