Limp home mode??? (Hypercrap)
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Senior Member
Joined: Aug 1999
Posts: 618
Likes: 0
From: Central, NJ
Car: 1989 IROC-Z
Engine: 350 Vortech Supercharged ZZ4 TPI
Transmission: T56
Axle/Gears: 3.73
Limp home mode??? (Hypercrap)
I have a Hypertech chip as well as the stock one. I like the Hypertech becuase it locks the torque converter slightly later and therefore makes it shift to OD a little less often when driving around on 40mph roads.
Whenever the Hypertech chip is in, every third day or so, the car won't start... just crank and crank until the battery dies. I know you are all gonna say injector leak down, which I think I have as well, but if I swap the chip out and put the stock one in, it starts without a problem.
I am wondering if the Hypertech chip is fried... I am under the impression that if the PROM goes bad the car will run on something called limp home mode for a few days or so to give you time to put a wokring chip in, and then it wont run anymore. Is this whats happening to me???? Any other ideas, suggestions, comments?? Thanks in advance.
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1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech Thermomaster chip with 160stat, MSD 6A, March Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's, Accell Universal 24# injectors
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
Whenever the Hypertech chip is in, every third day or so, the car won't start... just crank and crank until the battery dies. I know you are all gonna say injector leak down, which I think I have as well, but if I swap the chip out and put the stock one in, it starts without a problem.
I am wondering if the Hypertech chip is fried... I am under the impression that if the PROM goes bad the car will run on something called limp home mode for a few days or so to give you time to put a wokring chip in, and then it wont run anymore. Is this whats happening to me???? Any other ideas, suggestions, comments?? Thanks in advance.
------------------
1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech Thermomaster chip with 160stat, MSD 6A, March Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's, Accell Universal 24# injectors
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
Joined: Jul 1999
Posts: 12,089
Likes: 125
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
I had the same problem with my hypertech chip. I gave up on it. I think it was a VATS issue.
As far as "Limp mode" goes, it sounds more like a vats problem cuz you might be in "bypass" mode.
-- Joe
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/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
1989 Formula 350 4-bolt mains, Forged .030 TRW pistons, SLP 51010 Roller Cam, Comp-cams roller lifters,
Summit 1.5 roller rockers, World Products Sportsman II 2.02/1.60 heads, Edelbrock TPI Intake,
Cloyes Double Roller timing chain, Mellings oil pump: 13.5 @ 100.23 MPH
Since close of track : Ported SLP runners, Ported Plenum, AFPR, Autometer 100lbs F/P gauge, A/F ratio gauge, MSD 6AL, MSD Redline selector.
http://www.joesperformance.com
As far as "Limp mode" goes, it sounds more like a vats problem cuz you might be in "bypass" mode.
-- Joe
------------------
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
1989 Formula 350 4-bolt mains, Forged .030 TRW pistons, SLP 51010 Roller Cam, Comp-cams roller lifters,
Summit 1.5 roller rockers, World Products Sportsman II 2.02/1.60 heads, Edelbrock TPI Intake,
Cloyes Double Roller timing chain, Mellings oil pump: 13.5 @ 100.23 MPH
Since close of track : Ported SLP runners, Ported Plenum, AFPR, Autometer 100lbs F/P gauge, A/F ratio gauge, MSD 6AL, MSD Redline selector.
http://www.joesperformance.com
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