Heated O2 sensors rule!
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Heated O2 sensors rule!
I've had quite a bit of mods done in the last couple of years - EM longtubes, B&B, Hotcam, ported heads and intake, new injectors, plugs, tranny, rearend gears, etc. but never could get it running quite right and gas mileage was about 12.5 mpg. Last week had Trevor and Joe at EM install heated O2 sensors (it's a '93) and voila! Runs great. No stumbling, no going into open loop at stoplights, gas mileage went up to 15 mpg. As it has been suggested before, if you go with coated LT headers, go with heated O2 sensors. Caspers Electronics sells a retro kit for $89.95/each.
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Originally Posted by Pete K
They are a big help. I saw the tech tip on the forum. Bought all of the stuff at Autozone for $41.
Race Director
Joined: Sep 2001
Posts: 14,676
Likes: 751
From: NEwhere Ohio
I have a hotcam'd LT header (TPIS longtubes) 93 LT1 with Ed Wright programming.
After the cam, gas mileage went down the toliet and it reeks of raw fuel at idle making it difficult to breathe when aroudn the car.
(I should mention performance has been excellent).
I thought maybe my old O2's werent getting hot enough in the coated LT headers (I have no cats on my setup either, none of that emissions B$), so I installed heated O2's.
The heater on the O2's works great, but no dice. Same problem as before.
Ive heard Ed Wright programming is less than satisfactory and I hope to get a 'pcmforless' tune when they come to my area in april .
Ive noticed a lot of these gas mileage, raw fuel smell problem (I know that wasnt your problem) seem to happen on 93's. Coincidence?
After the cam, gas mileage went down the toliet and it reeks of raw fuel at idle making it difficult to breathe when aroudn the car.
(I should mention performance has been excellent).
I thought maybe my old O2's werent getting hot enough in the coated LT headers (I have no cats on my setup either, none of that emissions B$), so I installed heated O2's.
The heater on the O2's works great, but no dice. Same problem as before.
Ive heard Ed Wright programming is less than satisfactory and I hope to get a 'pcmforless' tune when they come to my area in april .
Ive noticed a lot of these gas mileage, raw fuel smell problem (I know that wasnt your problem) seem to happen on 93's. Coincidence?
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Originally Posted by dizwiz24
I have a hotcam'd LT header (TPIS longtubes) 93 LT1 with Ed Wright programming.
After the cam, gas mileage went down the toliet and it reeks of raw fuel at idle making it difficult to breathe when aroudn the car.
(I should mention performance has been excellent).
I thought maybe my old O2's werent getting hot enough in the coated LT headers (I have no cats on my setup either, none of that emissions B$), so I installed heated O2's.
The heater on the O2's works great, but no dice. Same problem as before.
Ive heard Ed Wright programming is less than satisfactory and I hope to get a 'pcmforless' tune when they come to my area in april .
Ive noticed a lot of these gas mileage, raw fuel smell problem (I know that wasnt your problem) seem to happen on 93's. Coincidence?
After the cam, gas mileage went down the toliet and it reeks of raw fuel at idle making it difficult to breathe when aroudn the car.
(I should mention performance has been excellent).
I thought maybe my old O2's werent getting hot enough in the coated LT headers (I have no cats on my setup either, none of that emissions B$), so I installed heated O2's.
The heater on the O2's works great, but no dice. Same problem as before.
Ive heard Ed Wright programming is less than satisfactory and I hope to get a 'pcmforless' tune when they come to my area in april .
Ive noticed a lot of these gas mileage, raw fuel smell problem (I know that wasnt your problem) seem to happen on 93's. Coincidence?
Racer
Joined: Sep 2005
Posts: 484
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From: Germany
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Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
I see no reason why not. 3 wire sensors contain 2 white wires. 1 goes to power, the other to groun. The black is the ecm reference. You can use a 3 prong weather pack and make a factory type harness, or cut and butt connect or solder it in. I recommend the weather pack route.
Burning Brakes
Joined: Dec 2003
Posts: 770
Likes: 0
From: Madison Mississippi
Originally Posted by dizwiz24
I have a hotcam'd LT header (TPIS longtubes) 93 LT1 with Ed Wright programming.
After the cam, gas mileage went down the toliet and it reeks of raw fuel at idle making it difficult to breathe when aroudn the car.
(I should mention performance has been excellent).
I thought maybe my old O2's werent getting hot enough in the coated LT headers (I have no cats on my setup either, none of that emissions B$), so I installed heated O2's.
The heater on the O2's works great, but no dice. Same problem as before.
Ive heard Ed Wright programming is less than satisfactory and I hope to get a 'pcmforless' tune when they come to my area in april .
Ive noticed a lot of these gas mileage, raw fuel smell problem (I know that wasnt your problem) seem to happen on 93's. Coincidence?
After the cam, gas mileage went down the toliet and it reeks of raw fuel at idle making it difficult to breathe when aroudn the car.
(I should mention performance has been excellent).
I thought maybe my old O2's werent getting hot enough in the coated LT headers (I have no cats on my setup either, none of that emissions B$), so I installed heated O2's.
The heater on the O2's works great, but no dice. Same problem as before.
Ive heard Ed Wright programming is less than satisfactory and I hope to get a 'pcmforless' tune when they come to my area in april .
Ive noticed a lot of these gas mileage, raw fuel smell problem (I know that wasnt your problem) seem to happen on 93's. Coincidence?
Same exact thing here....Alvin @ PCM-for-less sent me a piggyback chip and in less than a week it was at my door. Now, the smell is gone, the fuel economy went up 3-4mpg on the computer and it runs smooth from start-up through operating temp. Basically, everything he said it would do
Thread Starter
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Originally Posted by Zix
Hey! Nice to hear your car is all set!! I know it's been a long time coming. Are you still planning on going to the dyano day at Extreme on the 11th? Hopefully I'll see you there!
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by Lichen
Hey, Jay. Yes, I plan on being there. I need to see the air-fuel ratios and I have better have gained at least 50 rwhp for all of the money I spent.
Melting Slicks
Joined: Jan 2005
Posts: 2,604
Likes: 0
From: Phoenix, Arizona
Originally Posted by Lichen
Before the rebuild, my best was 280 rwhp, I can't remember the torque off hand.
Let me know pls.
Jeff
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by JEFNLSA
Congrats on the .02 fix. What's the deal @ Xtreme? Isn't like $50 for a couple pulls. If so, I'm definitely in...
Let me know pls.
Jeff
Let me know pls.
Jeff
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by JEFNLSA
Cool! 
Isn't it Sat. the 11th? What time you headin' out there? Am I correct on the $50 for two pulls?
Isn't it Sat. the 11th? What time you headin' out there? Am I correct on the $50 for two pulls?