Question about 2006 Suzuki Forenza

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Fuel shut off p2187

Hard to start when cold outside

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How cold -39F? like my last poster? (far north in canada)
nobody ever posts location, so can't even guess that.
cold to my wife is 68F.
to my car -40F.(or -40C)

1: check all fuses.?
2: fresh fuel, not a winter car , stored all summer >??
3: ever do the 60k mile tuneup ever? or the 120k or the 180K? as mileage dictates?

This car has EFI and as such, starts in cold weather , super well, like no other
system , ever did (carbs) it knows how to set fuel rates based
on true temperatures, the evaporation rate of fuel is very poor
and very cold weather, so goes very very rich to do that.

my wild guess, is the spark plugs are shot. never checked, or serviced ever... just a guess.

Posted on Dec 28, 2013

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P2187 code on 2006 sonata v6


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P2187 System Too Lean at Idle (Bank 1) DTC
OBD-II Trouble Code Technical Description
Article byDon BowmanASE Certified Automotive TechSystem Too Lean at Idle (Bank 1)
What does that mean?
This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.
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This is an ambiguous code in of itself. It can be a tough code to crack without a diagnostic strategy. During the last two starts, the engine management computer has recognized a problem with the fuel mixture at an idle.
It appears that the fuel mixture is too lean (too much air and not enough fuel) at an idle. If you have a 4 cylinder engine the "Bank 1" is meaningless, however, if you have a 6 or 8 cylinder engine, Bank 1 will be on the side with the number one cylinder. Code P2189 is the same code but for Bank #2.
There is a laundry list of components that could cause this scenario. For the most part the diagnostic procedure is not difficult -- just time consuming, unless it is one of the first items checked. The strategy dictates that the driveability problems are observed and noted, then start with the most commonly found problems and progress from there.
Symptoms
With the wide range of possibilities, the problems listed may and may not be present. But, here is where it is important to pay particular attention to the symptoms observed and make a note as to what and when symptoms appear for diagnostic strategy.
Vehicle has a miss at an idle
Hard to start, especially when hot
Very irregular idle
Additional codes to pinpoint cause of original P2187 code
Whistling noises
Lower turbo boost numbers
Fuel smell
Potential Causes of P2187 DTC
Faulty O2 sensor (front)
Faulty gas cap seal
Leaky or loose oil filler cap
Air leaking into the intake manifold downstream from the Mass Airflow sensor due to the manifold itself, vacuum hoses off or cracked, leak MAP sensor, Leak at turbo bypass or it's stuck open, power brake booster hose, or a leak in the EVAP system hoses.
Faulty MAP sensor
EVAP canister purge valve
Fuel injector leak
Fuel pressure regulator faulty
Leaks in the exhaust system
Faulty variable camshaft timing
Faulty ECM (engine management computer)
Faulty O2 preheater (front)
Clogged fuel filter
Fuel pump wearing out and producing low pressure.
Faulty mass air flow sensor
Diagnostic / Repair Steps
Your strategy for locating this problem begins with a test drive and observation of any symptoms. The next step is to use a code scanner (available at any auto parts store) and pulling any additional codes.
The computer has set a code P2187 stating that the fuel mixture is lean at an idle. This is the main code, however, any component malfunctioning within this loop that has the potential to cause a lean mixture will also be set in code.
If the test drive doesn't produce any symptoms it is possible that it is not a real code. In other words, the fuel mixture is not lean and that the computer or oxygen sensor is responsible for setting the code.
Every vehicle has a minimum of two oxygen sensors -- one in front of the catalytic converter and one after the converter. These sensors signal the amount of free oxygen left in the exhaust after ignition, which determines the fuel ratio. The front sensor is primarily responsible for the mixture, the second sensor behind the exhaust is used for comparison to the front sensor to determine if the converter is working properly.
If a rough idle is present or one of the other symptoms, begin the process with the most likely cause first. Either unmetered air is entering the intake manifold or there is a lack of fuel pressure:
Check the fuel cap for cracks and sealing and function
Lift the hood and make sure the oil filler cap is tight
If additional codes were present begin with inspecting them first
Look for air leaks starting at the mass airflow sensor. Check the hose or connection between the sensor and the intake manifold all the way to the manifold for cracks or loose connections. Check all vacuum hoses carefully attached to the intake manifold, to include the one to the vacuum brake booster. Check the hose to the MAP sensor and all hoses to the turbo if so equipped.
With the engine running, using a can of carburetor cleaner and spray a small mist around the base of the intake manifold and where the two halves meet if it is a two piece. Spray around the base of the EGR for leaks into the manifold. The rpm will increase if a leak is located.
Check the PCV valve and hose for leaks.
Inspect the fuel injectors for external fuel leaks
Inspect the fuel pressure regulator by pulling off the vacuum hose and shaking it to see if fuel is present. If so replace it.
Shut the engine down and install a fuel pressure tester on the schrader valve on the fuel supply rail to the injectors. Start the engine and note the fuel pressure at an idle and once again at 2500 rpm. Compare these figures with the desired fuel pressure found online for your vehicle. If out of range in volume or pressure replace the pump or filter.
The remainder of components need to be inspected by a service facility that has a Tech 2 scanner and programmer.
Register now to ask a question (free)
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The car runs fine--- I've checked for vacuum leaks, cleaned the MAF sensor, and replaced the Purge Valve.
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Apr 05, 2014 | 2002 Ford Windstar Cargo

2 Answers

1996 honda will not start under 60 degrees


tune it up. (fresh spark parts work best in cold and for sure damp wheather.
fresh gas?
leaking injectors?
isc stuck closed, and rpm low, hot?

the ecu, anticipates the next cold start,
it knows how much to open the iSC valve, to get a good start cold
and if colder to day, it opens more. (math)
if it (ISC) is gummed up,fas all do, it cant start right
so next time, try %10 throttle, starting, emulating a good ISC.
see?

Jan 07, 2014 | 1996 Honda Accord

1 Answer

Problem code p2187


code p2187 refers to system too lean bank 1==causes -- fuel pressure--injectors--intake leak---ECM It also refers to adaptive heated oxygen sensor (HO2S) control bank 1 no signal===causes --wiring ---HO2s---ECM Have a pressure test done on the fuel manifold to check fuel pressure ,regulator and filters.. Check for vacuum leaks in the manifold including all hoses.. Replace the oxygen sensor.

Oct 12, 2013 | Cars & Trucks

1 Answer

Code p2187 and engine light on


according to the data book code p2187 is "System too lean at idle, bank 1" and the probable cause is "fuel pressure, injectors, intake leak". hope that helps

Apr 27, 2013 | 2006 Kia Carnival 2.9

1 Answer

P2187 2007 pontiac solstice


This is a fuel leak code, could be cap is leaking or may be sign of a bad fuel pump. Try replacing cap first

Apr 17, 2013 | 2009 Pontiac Solstice

1 Answer

Engine light is on and i'm getting Code p2187. Where do I start to fix this problem??


P2187 (fuel system too lean at off idle).
this could be caused by a faulty fuel pump

Mar 29, 2010 | 2004 Mazda 6

1 Answer

Check engine light is on..its chevy hhr,ss.is anybody can help please .and there was a code p2187


P2187-Fuel Trim System Lean at Idle--
If you have a cold air intake on your 2009 HHR turbo, it been know to happen. Your HHR is still under warranty so take it to the dealer, the code indicates that the engine is running lean when at idle but is running fine what engine is under load. It could be a simple update to the soft wear to the ECM to the HHR or a faulty MAF, regardless use the warranty you have and have them get your HHR running 100% again.
Thank you for using Fixya.

Mar 18, 2010 | 2009 Chevrolet HHR

3 Answers

HARD TO START ENGINE WHEN IS VERY COLD


I read the other two solutions top your problem and I have to say, some people should not give advice, because the advice they are giving is not worth anything. NOW, let me tell you what is wrong with your car. You have a defective IAC (Idle Air Control) value. The IAC value (sometimes called a cold start value) is used as a means to quickly start your car when it is cold outside. Replace the IAC (easy to do) and your problem will be solved..

Oct 28, 2009 | Cars & Trucks

6 Answers

CHECK ENGINE CODE P2187 SAYS SYSTEM TOO LEAN AT IDLE BANK 1


i had the same code, p2187. check to the left of the throttle body(side facing the front of the veh.
there are 2 vaccum hoses going into the intake. the larger one on top has a spring clip holding it and if you look under that you'll see a smaller one with a check valve. mine was disconnected. plugs in under the larger one.

Aug 12, 2008 | 2003 Mazda Mazda6

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