C5 Dyno Failure Question
Melting Slicks
Joined: Jun 2007
Posts: 2,704
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From: Lone Star State
Went for a Dyno Tune yesterday. The engine light was on and the tuner found a low voltage knock sensor. He said he couldn't proceed with the tune until the sensor was replaced. There are two knock sensors under the manifold. The read out on his lap top could not tell him which one was defective so I am having both replaced ($120.00 + labor).
Good suggestions above to remedy the problem.
Weird because the 200o vert has only 17,000 miles on the odomoter
Good suggestions above to remedy the problem.
Weird because the 200o vert has only 17,000 miles on the odomoter
Premium Supporting Vendor
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The dyno operator did exactly what he/she should have. Your car needs to be in proper working order prior to dynoing, plus diognosing and removing your intake etc to install your knock sensors for $120 labor is a very fair price IMO.
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Chuck CoW
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From: San Diego
Pro
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From: Murrysville PA
Well got my vert back the other day; the actual price for the labor was much higher than expected (also required a new manifold gasket). Vert runs very smooth now however the engine light came back on the following day but I had no problem driving the car. After about a 45 minute drive the engine light went off and has not returned.
Burning Brakes
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From: Phoenix Arizona
Le Mans Master
Joined: Sep 2007
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From: Belleville Il
The Technician said the dyno failed because it was mis-firing and he wasnt comfortable proceeding to higher gear something along those lines (I never dyno'ed or tuned by vet before. This is all new to me, apologize if I am not using the proper terminology).
He said it could be bad gas or the need to tune the car. He didnt charge me anything since he couldnt do the dyno (I guess that was nice).
So I didnt get any printout. He reached 215 or 250 before i guess it mis-fired or called it a stop.
I drive the car and I really dont feel anything wrong with it. So I was surprised to hear that
He said it could be bad gas or the need to tune the car. He didnt charge me anything since he couldnt do the dyno (I guess that was nice).
So I didnt get any printout. He reached 215 or 250 before i guess it mis-fired or called it a stop.
I drive the car and I really dont feel anything wrong with it. So I was surprised to hear that
A knowledgeable tuner like Chuck CoW or ECS can hook it up and tell you exactly what is going on!! I'd give them a go and be happy rather than go through a guessing/throw parts at it and hope route!!
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From: Dallas TX
Thread Starter
Pro
Joined: Sep 2006
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From: Nazareth PA
Being an 01,,good possibility that plugs and wires may be in order. Cars that got the original platinum plugs often lost the little platinum "pucks" off of the ground strap. This greatly widened the gap. Every day driving seems fine but higher RPM running can show up the weakness,,but can be overlooked/masked to someone not familiar with it.
A knowledgeable tuner like Chuck CoW or ECS can hook it up and tell you exactly what is going on!! I'd give them a go and be happy rather than go through a guessing/throw parts at it and hope route!!
A knowledgeable tuner like Chuck CoW or ECS can hook it up and tell you exactly what is going on!! I'd give them a go and be happy rather than go through a guessing/throw parts at it and hope route!!
Thread Starter
Pro
Joined: Sep 2006
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From: Nazareth PA
Dyno success
So I replaced my spark plugs and wiring a month ago. I took my vette yesterday for a dyno. These are my numbers 344HP and 420rear wheel torque.
I only have a vararam as a performance mod, i need to go for a tune. Will that make a difference.
I only have a vararam as a performance mod, i need to go for a tune. Will that make a difference.
Team Owner
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From: San Diego
I think you mean 320 torque...
Team Owner
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maybe bad coil...not enough spark...BTDT......maybe bad wire, bad plug....only way to know is process of elimination....my car drove fine as well
Team Owner
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Did the tuner turn 'OFF' the traction control before starting the Dyno run?
If not then this could very well be your issue. Need to find out!
Thanks,Matt
If not then this could very well be your issue. Need to find out!
Thanks,Matt
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From: Nazareth PA
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Former Vendor
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From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
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