Log in or Sign up

Welcome to Tundras.com!
You are currently viewing as a guest! To get full-access, you need to register for a FREE account.
As a registered member, you’ll be able to:

Participate in all Tundra discussion topics

Transfer over your build thread from a different forum to this one

Communicate privately with other Tundra owners from around the world

Post your own photos in our Members Gallery

Access all special features of the site
Quick Links: 4x4 decals Basic Brake Bleeding; Not So Much; No Fluid Flow Intermittent shudder... torque converter? Under rear seat sub box Double Cab Under Back Seat Storage 2007 5.7 Tundra locking lug nuts keep loosening.

SAIS bypass and cold weather?

Discussion in '2nd Gen Tundras (2007-2013)' started by MacCTD, Nov 14, 2019.

Post Reply

Nov 14, 2019 at 12:23 PM

#1

#1
MacCTD [OP] New Member

Joined:

Jan 24, 2018

Member:

#12411

Messages:

199

Gender:

Male

Vehicle:

2010 CM 4x4

5100s

Had the dreaded P2440 code, installed the Hewett tech gen 1 SAIS bypass kit with block off plates. Install went fine, truck has no codes and runs perfect, but I notice at startup it seems to hesitate slightly to start, recently it has been in the 20s. It cranks fine, the battery is pretty new. Is there anything the bypass does that would cause this when it is colder out?

MacCTD, Nov 14, 2019

#1

Nov 14, 2019 at 7:50 PM

#2

#2
Rph74 New Member

Joined:

Aug 30, 2019

Member:

#35388

Messages:

203

Gender:

Male

First Name:

Chris

Springfield,MO

Vehicle:

2007 Tundra Crewmax Limited Silver/Redrock

Hmm I just installed a Hewitt Bypass and had no such issues here in Missouri. Had temps in the teens earlier in the week.

Rph74, Nov 14, 2019

#2

HewittTech01 likes this.

Post Reply

Register FREE to Reply!

Products Discussed in

TRIAX Synergy Gear Max 75W-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)

ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle

Spidertrax WHS023 Wheel Spacer Kit

TOYOTA Genuine (87103-0C040) Blower Motor Sub-Assembly

Metra Axxess ASWC-1 Steering Wheel Control Interface

SIXIWANZI Bearing Press Kit, 10PCS Bearing Race and Seal Driver Set

Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)

SEM 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz.

Alpine iLX-W650 7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto

Alla Lighting Newly Upgraded T25 Wedge 3156 3157 LED Bulbs, Amber Yellow Turn Signal Lights, 3457 4157-NAK 5702AK 360° Super Bright 3056 3757NAK Direction Blinker Lamps

Oznium Side View LED Bolt - 12V LED Side Emitting Light for Bumper, Grille, Cars Interior, Dash, Ambient Lighting, Motorcycle with Aluminum Housing & Screw Nut (8 mm Black, Amber LED), 2-PACK

T TAKMLY Borescope Camera with Light,16.4FT Semi-Rigid Cable,8 Adjustable LED,5.5mm IP67 Waterproof Endoscope Snake Scope for iPhone iPad and Android Phone Automotive Sewer Plumbing Inspection Repair

First Alert EZ Fire Spray, Extinguishing Aerosol Spray, AF400 Red 18 Ounce (Pack of 1)

Auxbeam 7440 W21W 7441 LED Bulbs, 6500K White, Super Bright 7440A 7440AL LED Backup Reverse Lights for Cars Trucks Motorcycles, 3030-SMD 12V, Pack of 2

SYLVANIA - 3157 ZEVO LED White Bulb - Bright LED Bulb, Ideal for Daytime Running Lights (DRL) and Back-Up/Reverse Lights (Contains 2 Bulbs)

JDM ASTAR 10pcs High Performance Super Bright 360-Degree Shine 194 168 175 2825 T10 PX Chipsets White LED Bulbs. (US Patent number US-D814666-S)

True MODS 6 Pack 4-Pin 12V Bosch Style Fused Relay Switch Kit [Interlocking Harness Socket Holder] [14 AWG Hot Wires] [SPST] [30 Amp] 12 Volt Automotive relays with Fuse for Auto Cars

CERAKOTE® Ceramic Headlight Restoration Kit – Guaranteed To Last As Long As You Own Your Vehicle – Brings Headlights Back to Like New Condition - No Power Tools Required - 10 Wipe Kit

ANTLINE Extremely Bright 3157 3156 3156A 3057 4057 4157 3057LL 3457 3157K 21-SMD 1260 Lumens LED Bulb Replacement Brilliant Red for Car Brake Tail Turn Signal Blinker Lights Bulbs (Pack of 4)

SHADESOX Car Side Window Sunshade (2-Pack) | Window Shade for Baby in Car | Universal Fit for 99% of Cars & Mid Size SUVs | Rear Car Window Shades for Kids and Children | Sun Blocker Window Screens

Hosa D5S-6 CAIG DeoxIT 5% Spray Contact Cleaner, 5 oz.

18pcs Tundra Interior LED Lights Kit Ultra Bright Map Dome LED Replacement Bulbs for 2007-2017 2018 2019 2020 2021 Toyota Tundra all Cab Sizes

FIVE BANANAS Brake Caliper Press Tool, Car Ratcheting Brake Caliper Piston Spreader Press Tool with 2 pcs Steel Plates, Red

Qidoe 78W 3 Port USB C 12V Outlet Dual PD 30W & 18W USB A Port with Voltmeter Lengthened Aluminum Body Switch Waterproof Car Charger Socket for Car, Boat, Marine, RV

NOVUS-PK1-8 | Plastic Clean & Shine #1, Fine Scratch Remover #2, Heavy Scratch Remover #3 and Polish Mates Pack | 8 Ounce Bottles

Lisle 37960 Electrical Disconnect Pliers

Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart

Eagle Klaw - Floor Mat Clips Set of Anti-Slip Fixing Retainers for Car Mats - Made in USA - Grey - Pack of 4 for 2 Mats + 3/8" Cutter

Backup Camera Monitor Only - 5" HD Image Back up Camera Screen for Cars Trucks SUVs Vans RVs Trailers Campers, Dashboard/Windshield Installation, 12V/24V, Camera Not Included (5")

Dupli-Color TR250 Truck Bed Coating Spray Paint - Black - 16.5 oz. Aerosol Can

LASFIT L2 3157 LED Reverse Light Bulbs, 6000K White Backup Light, 2025 Upgrade Halogen Replacement for 3156 3057 4157 3047 4057 3457 4114 DRL Taillights Daytime Running Light with Projector, 2pcs

Key Fob Keyless Entry Remote fits Toyota Tacoma Tundra Sienna Sequoia Highlander (GQ43VT20T), Set of 2

Aircraft Tool Supply Safety Lock Wire (.032)

Tomcat Repellents Rodent Repellent Continuous Spray, 2-Pack

JDM ASTAR Extremely Bright PX Chips 7440 7441 7443 7444 Amber Yellow Turn Signal LED Bulbs

B&DOG XSIN Car Charger PD QC3.0 Fast Charge Type c USB Port Socket Fast Charging with LED Light Show, for Toyota（White-1.3x0.9"）

Performance Tool W80276 10-Piece Star T-Handle Allen Wrench Set, Long Arm Hex Key Wrench Set

WORKPRO 13" Tool Bag, Wide Mouth Tool Tote Bag with Inside Pockets for Tool Storage

Directed Electronics Install Essentials 524N High Power Door Lock Motor

JDM ASTAR Extremely Bright PX Chips 3057 3156 3157 4057 4157 Amber Yellow Turn Signal LED Bulbs

General Motors GM Genuine Parts D808 Headlamp Dimmer Switch

USB Dashcam Power Adapter for Toyota and More. Connects to Rear View Camera for East Install (7 pin)