|
Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
|
Thread Tools | Search this Thread |
10-28-2022, 10:28 AM | #1 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Delay in engine revs...!
Hello people! Help solve the problem
When my car's engine attains up 2500 rpm in first gear, I push harder on the gas pedal, as the result of this, there is a delay in engine revs. The effect is as if ESP has worked... video of this problem: and |
10-28-2022, 11:14 AM | #2 |
Senior Member
Join Date: Jul 2014
Drives: 2020 Hakone
Location: London, Ont
Posts: 69,845
Thanks: 61,656
Thanked 108,286 Times in 46,456 Posts
Mentioned: 2497 Post(s)
Tagged: 50 Thread(s)
|
Is it stock? Any mods?
__________________
Racecar spelled backwards is Racecar, because Racecar.
|
10-28-2022, 11:26 AM | #3 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,207
Thanks: 502
Thanked 1,070 Times in 778 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
|
start with the very basic
Clean maf and map sensor, reset ecu unplugging battery and try again |
10-28-2022, 01:53 PM | #4 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
|
10-28-2022, 02:03 PM | #5 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
|
10-28-2022, 03:32 PM | #6 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,207
Thanks: 502
Thanked 1,070 Times in 778 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
|
the fact that it starts exactly at 2800 where the stock oem tune switches to DI only at relatively low loads, makes me think of problems with the DI itself
Can you try to floor it heavily at 2000 rpm instead of give partial throttle? like 2000 rpm floor it 100%... if you are quick enough it should still cover the zones where it uses 50/50% of injections at least untill 3200 rpm, so the esitation should begin a bit later in the case it is the DI, don t really know how to help you, maybe some DI injectors is clogged up or faulty |
The Following 2 Users Say Thank You to tomm.brz For This Useful Post: | Ultramaroon (10-28-2022), x808drifter (10-29-2022) |
10-30-2022, 06:59 PM | #7 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
And so, here is the result!
There is no delay when I increase speed sharply from 2000rpm. But it's all in 1st gear! Let me remind you that the delay occurs with a sharp increase in speed at 2500rpm, it is in this range that 2nd gear is switched on |
10-30-2022, 07:07 PM | #8 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
An interesting moment, using the tiptronic, I switched the speed to 2nd gear at 2000rpm, as a result ... the same delay!
Bottom line, the delay occurs at the moment of gear shifting from 1 to 2 |
10-30-2022, 07:19 PM | #9 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Maybe an automatic transmission torque converter?
|
10-31-2022, 09:52 AM | #10 |
LMGTFY
Join Date: Mar 2016
Drives: 13 FRS, 91 Miata
Location: Lava Town, HI
Posts: 2,776
Thanks: 5,561
Thanked 3,646 Times in 1,625 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
|
|
11-01-2022, 11:08 AM | #11 | |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
11-01-2022, 11:21 AM | #12 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,207
Thanks: 502
Thanked 1,070 Times in 778 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
|
dont know what to say sorry, i d a log from Obd to help you more
|
11-03-2022, 09:35 AM | #13 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Another interesting observation. I arrived at the service, got into the car with a mechanic for a test drive - and there was no delay! worked perfectly! No matter how hard I try. But as soon as the car was turned off and restarted, this problem immediately got out, the delay reappeared. ECM? UNIT-AT CONTROL ?
|
11-15-2022, 05:45 PM | #14 |
Member
Join Date: Oct 2022
Drives: GT86 white
Location: Respublika Kazakhstan
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
heeeelp guys
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Delay in engine revs...! | Tekkk | Issues | Warranty | Recalls / TSB | 0 | 10-28-2022 09:22 AM |
Engine knocking around 1.8 revs | SammyXNA | Engine, Exhaust, Transmission | 21 | 11-08-2021 10:16 AM |
Engine over revs randomly w/ no throttle response | disruptorbeam | Issues | Warranty | Recalls / TSB | 14 | 02-12-2021 01:27 AM |
Boost vs Revs: Comparing Internal Engine Stresses | Williampreza | Engine, Exhaust, Transmission | 15 | 04-10-2018 08:41 PM |
2.5L with lower revs/more torque, or 2.0L with higher revs? | Superhatch | Engine, Exhaust, Transmission | 124 | 08-28-2013 12:20 PM |