If that isn't available, provide all you know and explain why. I was thinking of inspecting my crankcase vent valves to see if there are any tears before I consider replacing them. We're here to help so being rude won't get you very far. If adding a little propane into the engine makes the idle smooth out your probably looking for a vacuum leak. By making a good attempt to narrow down where and what may be causing the problem you save those trying to help many steps in diagnosing the problem.
Step 4 Consult the manual to determine the location of all sensors and their wiring that could conceivably be implicated in the setting of code P2187. From what I gathered looking up the code, there's too much air in the fuel mixture. This is a zero tolerance policy. Step 5 Once it is certain the engine vacuum system is fully functional and that there are no vacuum leaks present, and that all relevant electrical values fall within specified values, prepare to test the fuel pressure. Take pictures, crawl under the car, look under the hood. Since the lean fuel mixture is a result of either additional air seeping into the intake manifold or low fuel pressure, the mechanic will systematically go through potential causes of these two problems until the technician locates a leak, blockage, or faulty component to be repaired or replaced. We're not super strict here, but for most of our posts we follow a question-response format.
P2189 will be Bank 2 at idle. However, since there is some overlap between the symptoms of low fuel pressure and those of code P2187, it is important to eliminate or confirm low fuel pressure as a contributing factor in the presence of code P2187. If the above cleaning doesn't cure your issues you need to have the computer controlled automatic idle speed control system diagnosed and repaired by a dealer or electronic engine control repair shop. Mazda should have fixed the issue with that vacuum line or covered not just a few models with same engine for same years. We allow links, pictures, video, or audio file to help diagnose your problem.
The post will be deleted, this is not a review forum for specific shops. Regardess, the car runs great. A test drive may also be in order. No intentionally bad, harmful, or deceptive advice. It would start steady, then rumble harder for a few seconds, before going back to being steady again. Step 2 Perform a thorough visual inspection of the engine vacuum system, and look for split, cracked, dislodged, or hardened vacuum hoses and lines. I have Code P2197 and was adviced System too lean, they mentioned a rubber hose being cracked and thefore probably letting too much air air? Running too lean at idle can often be caused by an air leak between the mass air flow sensor and the throttle body, a leaky intake manifold gasket, or some other vacuum leak.
I also had to replace the fan sensor did myself and not expensive to buy and easy to fix, two screws. Thanks Sent from Finally decided to check out my crank case vent and found the one on bank 1 to have a slight split in it which supports the code I pulled. There is no noticeable change in engine performance or smoothness. Rescan the system to see if the code returns. Eventually, you'll have misfiring again. Consult the manual on the correct procedure to replace inlet manifold gaskets. I have Code P2197 and was adviced System too lean, they mentioned a rubber hose being cracked and thefore probably letting too much air air? I've also cleaned the throttle body without any change.
While it is still possible to drive most vehicles registering the P2187 code, it is important to address the underlying issues at your earliest convenience. Contact YourMechanic to be connected with a knowledgeable vehicle technician in your area. Consult your service manual for it's location if you need help. Either something is allowing air into the fuel system or something is restricting the flow of fuel. Let me know if you have more issues.
We look forward to helping everyone with their car repairs and questions, but please take the time to read this sidebar. If you do not take the time to include this basic information your post may be removed until it is revised. Those who continually cause issue will be removed 2a One Incident per Thread. . The image below shows typical damage in an inlet boot caused by hardening of the boot. Through this process, I've tried many things and during this process I found other things on my car that needed fixing. It appears that when I did that it threw a slew of fault codes, so my guess is that it might take a couple days to clear out.
I've even gotten underneath of the car and sprayed everything. If it's got wheels, treads, floats, flies, or has an engine you're good to go. Changes in fuel delivery will be indicated by the long-term and the short-term fuel trim values. Remember the golden rule: If you have nothing nice to say, don't say anything at all. When I slowed to 5 mph the car just stalled. Also respect those that take the time to answer questions and remember that many are professional mechanics, who normally get paid very well to diagnose automotive repairs. Does the actual driving speed not engine rpm's seem to stay the same when this happens? By actively helping the moderators with this you ensure that the community continues to be a worthwhile and knowledgeable resource for car repairs.
Treat those asking for help with respect, and answer without bias toward them, their situation, or their knowledge or lack thereof about the repair issues. When the problem is 'solved' please click the button under your post marked 'Is this solved? If you are still traveling at the same speed even though the engine speeds up, it's your tranny or clutch. Since it is easy to be bogged down in small details, it sometimes happens that the code is resolved without realizing it, so rescan the system regularly to save time and effort. You can also hit us up at 6crew. We're pretty flexible and we even enjoy a bit of humor now and again. They also got me on the coils going bad.