O2 sensor
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Joined: Mar 2001
Posts: 14,293
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
O2 sensor
I just recently converted my car to TPI, and it runs...ok...honestly I was hoping for more of an improvement over my 4bbl.
When I sit at a stop light and it idles about 500RPM warm, my Check Engine light comes on, as soon as I take off, it goes out. i get a code 44 (Lean Exhaust indication). mods listed below: if the idle is around 700RPM it does not come on at all.
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87 Formula 5.1 converted to TPI Yellow/Black
SLP cam, headers, cat-back exhaust
Ported & polished TPI intake
Gil Younger (no yo-yo) Shift Kit
Aluminum Driveshaft
3.73 Posi gear
Baer 12" brakes 4 wheels
KYB AGX Adjustable Shocks & struts
Hotchkis strut tower brace
South side machine frame connecters
Custom reinforced control arms and pan hard bar.
Custom Leather interior
CUSTOM Yellow Gauge Faces
87 Formula TPI (5 Speed) Yellow/Gray STOCK
1967 Buick Riviera 430hp Turns high 14's (Not bad for 4300 lbs)
83 Camaro (Parts)
83 T/A (parts)
http://www.3rdgenformula.com
When I sit at a stop light and it idles about 500RPM warm, my Check Engine light comes on, as soon as I take off, it goes out. i get a code 44 (Lean Exhaust indication). mods listed below: if the idle is around 700RPM it does not come on at all.
------------------
87 Formula 5.1 converted to TPI Yellow/Black
SLP cam, headers, cat-back exhaust
Ported & polished TPI intake
Gil Younger (no yo-yo) Shift Kit
Aluminum Driveshaft
3.73 Posi gear
Baer 12" brakes 4 wheels
KYB AGX Adjustable Shocks & struts
Hotchkis strut tower brace
South side machine frame connecters
Custom reinforced control arms and pan hard bar.
Custom Leather interior
CUSTOM Yellow Gauge Faces
87 Formula TPI (5 Speed) Yellow/Gray STOCK
1967 Buick Riviera 430hp Turns high 14's (Not bad for 4300 lbs)
83 Camaro (Parts)
83 T/A (parts)
http://www.3rdgenformula.com
Joined: Jul 1999
Posts: 12,089
Likes: 125
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Are you running a mass air system or map ??
Did you spill any coolant on your TPS? IAC??
Ive troubleshot this problem before, mainly on 2.8s but the electronics are similar..
-- Joe
Did you spill any coolant on your TPS? IAC??
Ive troubleshot this problem before, mainly on 2.8s but the electronics are similar..
-- Joe
Joined: Jul 1999
Posts: 12,089
Likes: 125
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Are you running a mass air system or map ??
Did you spill any coolant on your TPS? IAC??
Ive troubleshot this problem before, mainly on 2.8s but the electronics are similar..
-- Joe
Did you spill any coolant on your TPS? IAC??
Ive troubleshot this problem before, mainly on 2.8s but the electronics are similar..
-- Joe
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Joined: Jan 2000
Posts: 19,653
Likes: 309
OK,
Try resetting the TPS voltage, cleaning the IAC, and setting the minimum throttle position. That should get your idle closer to normal.
The check engine light is probably due to low oil pressure or the TPS setting. You can scan the ECM for error codes to make sure.
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Later,
Vader
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"Let the bodies hit the floor!"
Adobe Acrobat Reader
Try resetting the TPS voltage, cleaning the IAC, and setting the minimum throttle position. That should get your idle closer to normal.
The check engine light is probably due to low oil pressure or the TPS setting. You can scan the ECM for error codes to make sure.
------------------
Later,
Vader
------------------
"Let the bodies hit the floor!"
Adobe Acrobat Reader
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