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Found 4 results

  1. When I talking about misfire some days ago, got a comment saying that she had misfire before and it turned out to be sensor issue. Then it occurs to me that there is an occasion that sensors are working fine, the actual problem is AFR inappropriate. The syndrome of this problem could be car shaking/trembling, idle speed goes too high and too low, even misfire. So I use my Topdon Artipad to scan the DTC, and got P0171. There are many possible reason for this code, you can google it, but I will summarize the essence is too much air too little fuel. When AFR is incorrect, it actually means fuel is less and air too much, the essence is too much O2 in emission. For fuel system, when air intake is fixed, the AFR will be incorrect if fuel intake is low due to component issue. For exhaust system, when air intake is fixed, air leak, O2 sensor and AFR sensor detect and exhaust system related EGR should also be considered. For the intake system, when air intake is fixed, sensor features change, leads to fuel intake less than normal. For ignition system, when air intake is fixed, what’s the reason? Think about it, when misfire, mixed gas not completed burnt, O2 sensor or AFR sensor detect too much O2 in exhaust pipe. Some inexperienced technicians might think O2 sensor and AFR sensor broken that cause this problem. But I think the exact opposite, the sensors are working just fine. P0171 and P0172 are generated because they are monitoring, but, if you don’t fix the issue asap, sensors will be dead after a while. For my last article on misfire, you can click to my profile or search "my shallow analysis on engine misfire".
  2. Greetings! Since last year, I am not visiting any grocery store other than Kroger. A few days ago, I heard about their customer satisfaction survey program which offers participants gift cards, cash rewards and fuel points. I found this article worth reading to understand about Kroger feedback program. Now, I have near about 100 points in my Kroger Plus Shopper's card, but I am confused about its use at pump stations. According to Kroger's customer service, I can save 10 cents off per gallon with 100 fuel points. Do you think I should use them or try to win more points to get some handsome discount? Secondly, I am confused either these points could only be used at Shell stations or I can use them anywhere? Moreover, the gift cards of $100 also work to get fuel points or to get discounts at fuel stations for different vehicles? It would be great if you come with your experience and useful suggestions.
  3. If you have put wrong fuel in your petrol car or diesel car in Sefton, you do not need to feel embarrassed because, more than 150,000 motorists fill wrong fuel in their vehicles every year. We provide the ultimate wrong fuel services in Sefton. Our trainers will solve the wrong fuel of your on the spot. Contact : 03335777353 For more Detail: https://bit.ly/2FYXt4w
  4. My '94 villager just suddenly quit this morning as I was backing out of my driveway. No weird noises, no surging, no sputtering - just like someone switched the key off. When I try to restart it, it doesn't even hint of firing up. It just sits there and cranks away. It actually sounds like it doesn't have quite as much compression as it normally does. I hooked up a timing light to the #1 plug wire and confirmed that it is getting spark at TDC, so I know my ignition system is working and my timing belt is good. I disconnected the fuel line right before the fuel rail (post-filter) and I'm getting fuel. My computer has been complaining about a fuel injector circuit fault for a while and it had been running a little rough every now and then. I just figured one of the injectors was going bad and I'd just get around to it when it warmed up a bit. I'm wondering if something in my injector circuit actually died or shorted out. It wouldn't be injecting fuel into the engine, which would explain how it suddenly quit. It might also explain how there seems to be less drag on the starter - if it's not squirting fuel in there along with the air itself, it's got slightly less mass to compress. Does this sound reasonable? If so, how would I go about tracking down something like this?
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