Weird tach issue
Thread Starter
10 Second Club
iTrader: (38)
Joined: Mar 2003
Posts: 593
Likes: 0
From: Whiteland, Indiana
Weird tach issue I know all about the slow tach issue with these cars, but mine is different. Mine will climb to 3k and stop then catch up to 4K then stop again. It's doing it ONLY at WOT. It's not being slow.. it's totally stopping.
Any ideas?
Thanks.
Any ideas?
Thanks.
My car is doing the same thing, I posted a thread int he PCM section a month ago and didn't get any responses. I'm still unsure of the problem. I also have a OBD2 scan gauge and it gets stuck as well, so it seems to be the signal to PCM.
I'm thinking about pulling the intake and swapping the cam sensor and adding another ground from the heads to the frame, thats about the only thing that comes to my mind.
In for some answers too.
I'm thinking about pulling the intake and swapping the cam sensor and adding another ground from the heads to the frame, thats about the only thing that comes to my mind.
In for some answers too.
Thread Starter
10 Second Club
iTrader: (38)
Joined: Mar 2003
Posts: 593
Likes: 0
From: Whiteland, Indiana
I verified on my interceptor gauge that my computer also is seeing the rpms stall out right about 3800 and again at around 5100. I'm wondering if either my MSD windows switch or MSD timing twister is causing it.
Just a thought...
I have the aeroforce interceptor gauge as well. I haven't tried to run it with out the gauge plugged in to see if the problem continues. Maybe the interceptor is the problem, I'll have to try it next time I have my car out.
I have the aeroforce interceptor gauge as well. I haven't tried to run it with out the gauge plugged in to see if the problem continues. Maybe the interceptor is the problem, I'll have to try it next time I have my car out.
Thread Starter
10 Second Club
iTrader: (38)
Joined: Mar 2003
Posts: 593
Likes: 0
From: Whiteland, Indiana
Hmmm... I wondered why my tuner never mentioned it and that would explain why. You have to unplug the gauge so he can plug in his laptop into the port under the dash. I will have to give that a try also.
Good call, my car was tuned just a few months ago and my tuner never mentioned anything as well.
Trending Topics
Thread Starter
10 Second Club
iTrader: (38)
Joined: Mar 2003
Posts: 593
Likes: 0
From: Whiteland, Indiana
preliminary results show that the Interceptor gauge could very well be the problem. I spoke with a tuner and he agreed with This. That the computer cannot feed the gauge information and keep the tach gauge accurate. I drove it with the interceptor gauge unplugged and the tach did just fine.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Good to hear the problem is figured out. Bad news these gauges are expensive as hell. I haven't had time to drive my car in the last month, life's been crazy. I'll try to get my car out this week and give it a try. Wounder if Interceptor would be willing to do something about this.
Last edited by conan; Aug 9, 2014 at 10:56 AM.
Bringing this back up from the dead. I finally got my car out and went for a spin today, unplugged the Aeroforce interceptor gauge from the OBD2 port, put the pedal to the floor and the tach worked just fine. Plugged the gauge back in and the tach sticks. Going to get a hold of them tomorrow and see how well they stand behind their product.
Thread Starter
10 Second Club
iTrader: (38)
Joined: Mar 2003
Posts: 593
Likes: 0
From: Whiteland, Indiana
Mine is getting retuned and there has been no tach issue at all since I unplugged it. I need to call them as well.
Last edited by Captain InsaneO; Sep 9, 2014 at 11:12 AM.
Thread Starter
10 Second Club
iTrader: (38)
Joined: Mar 2003
Posts: 593
Likes: 0
From: Whiteland, Indiana
service@aeroforcetech.com
I emailed them and linked them to this page. they told me to try plugging the gauge back in while car is running. I'll give that a try
I emailed them and linked them to this page. they told me to try plugging the gauge back in while car is running. I'll give that a try
