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SUVs Chevrolet Suburban & Tahoe Chevrolet Suburban and Tahoe Start problems
180 messages, Last post on Dec 04, 2009 at 7:57 PM
You are in the Chevrolet Suburban & Tahoe Forum. Your Hosts are steve_ & tidester
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Just bought this in May. 105k KM's (65k miles). Fully loaded. 5.3L. Has started fine every day since we bought it. It had started to crank over a little longer first thing in the morning, or after sitting for several hours. So I've been letting the pump pressurize fully before cranking and it starts within the first few cranks, just like any other time. Yesterday afternoon my wife goes to head out and it won't start. She tried it several times. I came home a few hours later and checked the plugs. Saw the threads were a little bit wet so fuel was getting in there I figured. After trying to start it a few times, I could smell fuel at the tailpipe. I then removed a spark plug and held it while she cranked it to see if there was spark. Yeah, not the smartest thing, but I sure did find out there was spark! Saw the spark and felt a nice big snap in my hand when it did! Anyway, tried it again this morning and still no start. So I don't think it's a flooding issue. I also have a CompuStar alarm, but no remote start connected. It seems very strange to me that fuel could be getting to the cylinders, and spark and it doesn't fire. I located the fuel filter but it ran totally fine until this point. No sluggishness or any of that, so a filter makes no sense. I hear the fuel pump prime every time the key is turned to 'ON' position. The CEL (check engine light) is on, but has been intermittently since we bought it from my wife's dad. Ran the codes right after buying it and it said something about spark on the drivers bank so I replaced the plugs on that side. Otherwise the truck runs very well, CEL on or off. The truck has an aftermarket exhaust, MAF, and K&N intake kit on it. I've owned Dodges always and you can check the codes yourself, but I think you need a scanner for this right? Any ideas? It's in our garage right now which is good, but I'd love to be able to diagnose it before it goes out to a shop.
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Replying to: cniwranski (Aug 16, 2007 7:54 am) tidester, host SUVs and Smart Shopper
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Replying to: tidester (Aug 16, 2007 8:33 am) I read that the FPR is on the drivers side, but didn't see a pic. I presume like most liquid pressure regulators that it would be disc-shaped with a pipe connection in the center, on both sides? I read that if you take the top hose off (vacuum side) and if fuel comes out, the FPR is bad. Also, every time I turned the key to ON, the pump would prime. Wouldn't the system be primed and the FPR tell it not to prime if I had just tried cranking it over? Other cars I've had have done that. You would get a very short prime if you had just primed it, since the system was fully pressurized.
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Replying to: cniwranski (Aug 16, 2007 9:07 am) So since I smelled fuel during cranking, I feel that very low pressure fuel is getting into the cylinders somehow. So quite possibly my regulator went bad. Where exactly is the thing?? My other possibility is the factory alarm is preventing fuel flow, BUT doesn't it prevent the fuel pump from running? Seems odd it still prime the system if the alarm is telling it not too. The horn doesn't honk or anything like it's alarming when trying to start the truck. The security light does go on while cranking the motor. That normal? Is they some definitive way to 'reset' the factory alarm or to make sure it's off so I can rule it out?
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Replying to: cniwranski (Aug 17, 2007 4:36 am) tidester, host SUVs and Smart Shopper
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Replying to: tidester (Aug 17, 2007 11:23 am) So I've decided to change the regulator and see if the pump is pumping fuel by removing the filter inlet line and priming the pump. Any tips or tricks on replacing the regulator? Do I need any special tools to get it unhooked from the lines? Twist and pull??
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Replying to: cniwranski (Aug 17, 2007 12:48 pm)  tidester, host SUVs and Smart Shopper |
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| I bought my Tahoe back in December '06. I love the idea of remote start. My remote periodically will start the vehicle and the vehicle dies. You cannot restart it from the remote. You can start it with the key at the point. I have taken it to the dealer once and they reprogrammed it. They said it is getting an engine code causing it to die immediately. | |
hi ihave tahoe 2003 ihave proplem whith remote keyles not working how can i make work in this car 
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