 Driveability for the experienced., Diag codes 35, 42. |
 Jun 16, 2008 - 9:04 PM
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Enthusiast Joined Jun 16, '08 From Orange County Currently Offline Reputation: 0 (0%)  |
Hello Toyota enthusiasts.
Well Long story short Im obviously new here. Not to working on cars....New to Toyota though. I swapped a 93 jap spec 3sgte into a 96 gt celica. Runs great but after a la hot of test driving and quality checking I had only two diag codes. 35 - Turbo Charging pressure sensor signal 42 - Vehicle speed sensor signal. As far as the T/C pres sensor. I have a steady 4.98v reference while idling, cruising and boosting. I have a varying signal voltage with is .1682v @ light throttle which will increase with load to WOT @ 4.97v The ground circuit is always grounded. Now, as far as driveability, I noticed that while the engine is normal operating temp its boosting fin, 7-10 psi. Great performance! After the engine is fully warm....I was WOT and felt a slight loss of acceleration along with a slight drop in boost. And after the check engine light. max boost 6-7 psi. Now, The wiring is all cherry, because I did it. My continuity checks are fine from sensor to ecm. Ok, so the stock 3sgte jap spec vehicle has a turbo gauge built into the cluster....I dont have the stock cluster, I have an aftermarket gauge. As far as code 42.....Have not tested yet. Has anyone had this issue or has info on my driveability issue? I will appreciate it. -Scott |
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Replies
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Jun 16, 2008 - 9:59 PM
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 Enthusiast  Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
QUOTE As far as the T/C pres sensor. I have a steady 4.98v reference while idling, cruising and boosting. I have a varying signal voltage with is .1682v @ light throttle which will increase with load to WOT @ 4.97v The ground circuit is always grounded. Hahaha a fellow nerd. Your overthinking this. The Tc code just means you hit fuel cut at 12psi. Disconnect and cap the vac line going to the turbo pressure sensor, but keep the harness plugged in. QUOTE After the engine is fully warm....I was WOT and felt a slight loss of acceleration along with a slight drop in boost. And after the check engine light. max boost 6-7 psi. Yep, because you hit fuel cut. QUOTE 42 - Vehicle speed sensor signal. Is your speedo working? Sounds like you didnt wire it up correctly. This post has been edited by lagos: Jun 16, 2008 - 10:00 PM -------------------- 15PSI - 30MPG - Megasquirt Tuned
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Posts in this topic
ScottDavid Driveability for the experienced. Jun 16, 2008 - 9:04 PM
hongkongnerdboy are you ornag county such as california? Jun 16, 2008 - 9:05 PM ScottDavid Yes. Jun 16, 2008 - 9:25 PM hongkongnerdboy go to our meet! Jun 16, 2008 - 9:59 PM celicaGT96 i believe i might know already but what exactly ca... Jun 17, 2008 - 12:28 AM ScottDavid I dont now if I am complimented or insulted. Non t... Jun 17, 2008 - 1:20 AM lagos That sensor is ONLY used for fuel cut. By disconne... Jun 17, 2008 - 9:42 AM hongkongnerdboy well let me know if you want to come or not so if ... Jun 17, 2008 - 12:22 PM ScottDavid Lagos, I understand that part. But boost gauge nev... Jun 17, 2008 - 8:31 PM lagos QUOTE Lagos, I understand that part. But boost gau... Jun 17, 2008 - 10:53 PM
DEATH QUOTE (lagos @ Jun 17, 2008 - 10:53 ... Jun 18, 2008 - 9:45 AM ScottDavid Youre suppose to plug it in?
Inspect the wiring f... Jun 18, 2008 - 12:21 AM lagos QUOTE (ScottDavid @ Jun 18, 2008 - 1... Jun 18, 2008 - 9:39 AM ScottDavid Sorry being sarcastic...I posted my volt readings ... Jun 18, 2008 - 9:46 PM lagos QUOTE As far as the T/C pres sensor. I have a stea... Jun 18, 2008 - 10:42 PM ScottDavid QUOTE (lagos @ Jun 18, 2008 - 10:42 ... Jun 19, 2008 - 1:43 PM |
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