ACDelco GM Original Equipment D1808A Engine Oil Pressure Indicator and Fuel Pump Cut-Off Switch
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The sensor is actually used for three purposes. Oil pressure sensor for gauge, fuel pump voltage via relay 1995 and earlier, and a safety feature that prevents the fuel pump from running if there is no oil pressure. The 6 is one of the most common areas where they fail. Diesel (5 liters) Yes, a sensor failure could fool you into thinking your filter is clogged.
Selected User Reviews For ACDelco GM Original Equipment D1808A Engine Oil Pressure Indicator and Fuel Pump Cut-Off Switch
Two things happen when you flip this switch on. The oil pressure is the first thing it tells you. The second reason is that it is a fuel shutoff for safety reasons. The failure of the second part is quite common. Someone might conclude that because you have oil pressure, something is "wrong. " There are two functions for two wires. There is only one switch and only one sender. The engine will stall under throttle or load if the switch part fails. As the switch becomes more difficult to use, the problem worsens. The engine will occasionally stop working. You might suspect air in the lines, a failed PMD, or a clogged return line, but any of the possibilities are possible. br>Injection pump damage can be caused by a faulty oil switch or fuel pump over time. A bad switch can work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work, not work This is the same noise you hear when the glow plug relay is turning on and sending power to the fuel pump.
In October of 2014, I'll update this review. I've used two of these ACDelco D1808A senders, and based on their combined performance, I'm giving them a 4/5 rating. br>br>I've found that this sender is noticeably more accurate than the BWD equivalent when compared to a mechanical pressure gauge. My experiences with trustworthiness have been mixed - One died just as quickly as the BWDs, while the other has survived and continues to function. I started by replacing my factory sender with an ACDelco D1808A (this model). It worked perfectly, but only for about 8 months and 5K miles. I was idling at a stop light at normal peak operating temperature when the engine failed. I was looking at the oil pressure gauge when the needle abruptly pegged to maximum, signaling an open circuit. That was the end of it - It had been working perfectly up until that point. br>br>I replaced it with a BWD brand sender that came with a lifetime warranty. I went through three of those senders during the warranty period. They all died in a similar time frame as the Delco. However, I was able to replace them for free because of the warranty. br>So why didn't I just use the free BWDs all the time? Because, even when they were "working," the BWDs were never truly functional. False low-pressure alarms were set off as a result of their actions. They were fine at the high end of the scale, according to a mechanical gauge, but when oil pressure dropped into the 20-percent range, they were no longer fine. BWD senders reported pressures of 10 psi or less in the 25 psi range. This resulted in the illumination of an erroneous "low pressure" warning light, and it was this light that made those senders unacceptable to me. br>As they got older, the BWDs became increasingly "twitchy," whereas the Delco remained more stable (until death). There wasn't much of a difference in the amount of time they lived before dying (6-). a period of nine months br>br>As a result, I returned to the ACDelco D1808A - Not because I thought it would last longer, but because it is more effective. As previously stated, my first encounter with the D1808A resulted in a failure after 8 months and 5K miles. I'm on my second Delco D1808A, which has been in service for one year and five months and has covered 7,500 miles. So far, it's been working perfectly. It may not seem like much, but it's a lot longer than the first D1808A or any of the BWDs lasted. br>br>What I like about the Delco is that it's accurate enough for a dashboard gauge at a hot idle. On either of my D1808As, I had no issues with accuracy. They didn't seem to mind if the warning light went off in a false alarm. br>br>One additional point: Before you get too worked up about your oil pressure, check it with a mechanical gauge. Even when new, electric senders, including the Delco, should never be taken for granted. They're meant to get your attention, but they shouldn't be relied on for accurate diagnosis.
My truck (a 1998 GMC K2500) had the symptoms of running fine on the highway but skipping and stalling in town. The lift pump was activated when the oil pressure was too high. When the oil pressure dropped below a certain level, the lift pump came to a halt. When the key has been turned off for more than ten seconds. The lift pump is activated for 5 seconds after the ECM has triggered it. When there is oil pressure, this switch activates the lift pump, and it waits for the truck to start. Shortly after installing this switch, I also bought a new lift pump for $60. The pump had 160K miles on it, and I consider $60 to be a good investment in terms of peace of mind.
5 diesel. I had assumed that my 6 would suffice. 5 of the diesels had water in them or had problems with the new PMD I put in. It developed a hiccup while driving at highway speeds - This oil pressure indicator fixed my problem after a brief loss of power. This sensor also serves as a fuel cutoff in the event of a power outage.
It's incredibly simple to switch out the pieces! In less than 5 minutes, I was able to remove the old one and replace it. I have a 1992 Chevy Silverado C2500 that was having trouble starting, but after replacing this sensor, it started right up! It activates the lift pump and allows for a quick start! I adore my number six.
Simple to install, and the GMT400 now has a reasonably accurate gauge. For the first time in my life, I'm almost trusting the oil pressure gauge on these trucks.
The product worked with an AC Delco part. It didn't fix the issue I was having. It was, however, worthwhile to try. You can't go wrong with a brand new AC Delco part. br>.
On my 1994 GMC 3500 6, it worked perfectly. 5 TD. My problem with running out of fuel has been resolved.
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