 Cold = Boost Nice, Warm = <5psi issue |
 Oct 2, 2012 - 10:44 PM
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Enthusiast Joined Oct 2, '12 From New Zealand Currently Offline Reputation: 0 (0%)  |
Hey guys!!! :-) new to the forum and new to the gt4 Celica.
I have a 3SGTE GT4 ST185 My problem is that the car boosts really hard when the car is warming up to temperature but as soon as the car gets warmer the car seems to goto retarded mode and the car pings slightly and only hits 5psi. Then while I'm driving it sometimes boosts hard and then I can feel the car going into retarded mode or limp mode :-( So cold ish to warming up its ok but then warm for awhile it goes into limp mode And there is no error codes :-( Any help would be amazing! |
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Oct 2, 2012 - 10:55 PM
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 Enthusiast  Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
How much boost are you hitting? Is factory fuel cut disabled?
You are either hitting fuel cut, or knock response. -------------------- 15PSI - 30MPG - Megasquirt Tuned
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Oct 3, 2012 - 2:10 PM
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Enthusiast Joined Oct 2, '12 From New Zealand Currently Offline Reputation: 0 (0%) |
QUOTE (lagos @ Oct 2, 2012 - 10:55 PM)  How much boost are you hitting? Is factory fuel cut disabled? You are either hitting fuel cut, or knock response. The car is factory, has no mods so i'm not sure if it will hit fuel cut, YES I know there might be knock response but why should it knock? QUOTE (yellowchinaman @ Oct 3, 2012 - 4:03 AM) have your checked for error codes? Sounds like you have a problem with heat soak or one of your sensors? No error codes, I just checked this morning :-( What is heat soak? I was thinking about tricking my ECU to think the air temp is 20* by bridging the air temp wiring with a 3k resistor. This is what I have done so far. Full Engine Service. (Engine Oil, Filter, Fuel Filter, Fuel Line, Gearbox oil, diff oil, Spark Plugs, Leads, Radiator Flush) Pulled the 15A EFI Fuse to rest ECU Eliminated the fuel pump relay Put an HKS Intake after photos Changed the MAF (checked resistance and checked OK) FUEL: 98ron On the way: Full Vacuum Line Kit to replace all lines I did suspect that the fuel pump is the issue but when the car is warming up its fine and I would assume that it would be richer as colder = richer so there couldnt be any signs of not enough fuel when warm I would assume :-) Appreciate your input so far guys. |
Posts in this topic
FSRRM Cold = Boost Nice, Warm = <5psi issue Oct 2, 2012 - 10:44 PM
FSRRM Here are photos of the car too just to get a rough... Oct 2, 2012 - 10:51 PM yellowchinaman have your checked for error codes?
Sounds like you... Oct 3, 2012 - 4:03 AM lagos Have you checked your ignition timing ? Oct 3, 2012 - 2:41 PM
FSRRM QUOTE (lagos @ Oct 3, 2012 - 2:41 PM... Oct 3, 2012 - 3:41 PM yellowchinaman Heat soak usually applies to people with mods like... Oct 4, 2012 - 3:16 AM FSRRM QUOTE (yellowchinaman @ Oct 4, 2012 - 4... Oct 4, 2012 - 1:55 PM bloodMoney Try setting the static timing back to 10* and see ... Oct 4, 2012 - 2:47 PM FSRRM QUOTE (bloodMoney @ Oct 4, 2012 - 3... Oct 4, 2012 - 3:28 PM FSRRM No codes
Question, What if I have too much OIL i... Oct 5, 2012 - 9:07 PM FSRRM Hey guys! found the issue, sorry I couldn... Oct 6, 2012 - 9:54 PM yellowchinaman Who da hell would had thought that you'd have ... Oct 7, 2012 - 10:34 AM |
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