Can't get jet chip to work right
#1
Member
Thread Starter
Join Date: Jul 2000
Location: Austin, TX
Posts: 277
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Z28
Engine: 350tpi
Transmission: 700r4
Can't get jet chip to work right
I put a new set of plugs and wires in tonight because it was missing. That fixed the mis, so I decided to install the jet stage II chip that came with the car. I disco'd the battery, changed the chip, started it up and for a second it acted like it worked great. You could tell a slightly different idle from the engine. After about 15 seconds it started to idle like crap and started running pig rich. I disconnected the battery again for about 5 minutes trying to reset it. Again it started up but then switched to crappy mode. Also the "service engine soon" light came on. Car is stock 350tpi plus K&N and exhaust. Any ideas?
I put the stock chip back in and it runs great.
Phyte
I put the stock chip back in and it runs great.
Phyte
#2
Senior Member
Join Date: Dec 2003
Location: Point Marion PA.
Posts: 623
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1982 CAMARO;
Engine: 1985 LB9;
Transmission: T-5/
If the chip had major changes compared to the factory chip it will take a few for the ECM to Learn, Let the car idle with it for awhile and then if it seems like it is running ok, take it for a 20 min Ride.
But My bet is that the Chip Has Way too much Fuel programmed in since it is a aftermarket chip and Will seem like it is better when it is not.
Learn to Scan the car yourself and see what it is doing then Learn to burn you own Proms. Cost to start to burn you own proms is usually equivilent or less than a aftermarket Chip. Check out this article. https://www.thirdgen.org/newdesign/tech/promintro.shtml
But My bet is that the Chip Has Way too much Fuel programmed in since it is a aftermarket chip and Will seem like it is better when it is not.
Learn to Scan the car yourself and see what it is doing then Learn to burn you own Proms. Cost to start to burn you own proms is usually equivilent or less than a aftermarket Chip. Check out this article. https://www.thirdgen.org/newdesign/tech/promintro.shtml
#3
Supreme Member
iTrader: (2)
Join Date: Jan 2002
Location: Moorestown, NJ
Posts: 9,962
Likes: 0
Received 3 Likes
on
3 Posts
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Sounds like there is a problem with the jet chip. If the stock one works well then use it instead.
#4
Senior Member
Join Date: Oct 1999
Posts: 6,621
Likes: 0
Received 1 Like
on
1 Post
Car: 91 Red Sled
Axle/Gears: 10bolt Richmond 3.73 Torsen
If your SES light is working (key on check), is it blinking REALLY fast? If so, the chip is either damaged or installed improperly. This will cause what you're describing to me. An aftermarket chip almost NEVER touches the fuel maps. I have yet to see a chip for an OBDI car that does more than adjust the timing and PE afr (along with lower fan temps and small "felt" differences).
#6
Member
Thread Starter
Join Date: Jul 2000
Location: Austin, TX
Posts: 277
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Z28
Engine: 350tpi
Transmission: 700r4
I know I know, have a custom one made. I'm going to try the jet chip again. I don't think I let it warm up enough to go into a closed loop. It's a free chip, so I might as well try again.
I've got a ZZ4 cam and ported heads ready to go in. I'll get a chip burnt after I get those on.
Phyte
I've got a ZZ4 cam and ported heads ready to go in. I'll get a chip burnt after I get those on.
Phyte
#7
Member
Thread Starter
Join Date: Jul 2000
Location: Austin, TX
Posts: 277
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Z28
Engine: 350tpi
Transmission: 700r4
Originally posted by JPrevost
If your SES light is working (key on check), is it blinking REALLY fast? If so, the chip is either damaged or installed improperly. This will cause what you're describing to me. An aftermarket chip almost NEVER touches the fuel maps. I have yet to see a chip for an OBDI car that does more than adjust the timing and PE afr (along with lower fan temps and small "felt" differences).
If your SES light is working (key on check), is it blinking REALLY fast? If so, the chip is either damaged or installed improperly. This will cause what you're describing to me. An aftermarket chip almost NEVER touches the fuel maps. I have yet to see a chip for an OBDI car that does more than adjust the timing and PE afr (along with lower fan temps and small "felt" differences).
I'll try again tonight
Phyte
Trending Topics
#8
Supreme Member
iTrader: (2)
Join Date: Jan 2002
Location: Moorestown, NJ
Posts: 9,962
Likes: 0
Received 3 Likes
on
3 Posts
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Does teh ecm return any error codes after the SES light illuminates? After the SES, shut down and check for error codes before resetting the computer. It sounds like somehting on that chip is causing a code to set.
#9
Supreme Member
Join Date: Jun 2000
Location: In reality
Posts: 7,554
Likes: 0
Received 1 Like
on
1 Post
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
Originally posted by Phyte
It's a free chip, so I might as well try again.
It's a free chip, so I might as well try again.
Thread
Thread Starter
Forum
Replies
Last Post
sailtexas186548
Exterior Parts for Sale
14
02-29-2016 08:40 AM
NBrehm
Engine/Drivetrain/Suspension Parts for Sale
1
08-25-2015 11:49 PM