Engine hardly starts/runs
#21
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Location: Anthony TX
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St. Jude Donor '08
If you clear the DTCs do they come back after you start the car?? The only DTCs that I would worry about right now are the column lock DTCs.
B2587H
B2592H
The U series DTC's are not right either. Leave the doors disconnected and clear all the DTCs and then see what comes back.
Bill
B2587H
B2592H
The U series DTC's are not right either. Leave the doors disconnected and clear all the DTCs and then see what comes back.
Bill
#22
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Ok so I fixed the exposed wires going to the crankshaft position sensor and put everything back together. Car doesn't start at all now. I cleared the codes but now I am getting a HVAC U1160HC. But I'm not seeing a U1160 on any lists I can find online within the HVAC section. I am also getting a Charge system fault message when I shut the key off after trying to start.
Could the crankshaft position sensor need to be replaced? Shouldn't I be getting a code of the crankshaft position sensor if it was bad?
I had trouble with the column lock about a year ago and never cleared the code then so I'm guessing that's what those are from.
Could the crankshaft position sensor need to be replaced? Shouldn't I be getting a code of the crankshaft position sensor if it was bad?
I had trouble with the column lock about a year ago and never cleared the code then so I'm guessing that's what those are from.
Last edited by jac1979; 10-11-2009 at 03:55 PM.
#23
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I tried starting the car with the door connectors unplugged, still doesn't start. Cleared the codes while connectors unplugged and that's when the HVAC U1160 HC appeared. I reconnected the doors cleared that code. I have not seen any codes reappear but the car doesn't start so it's hard to say if the codes even have a chance to reappear. I am not getting any Charge system fault messages since I reconnected the doors.
Last edited by jac1979; 10-11-2009 at 04:20 PM.
#25
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Yes there is spark...after trying to start it again I can get the car to start but it hardly starts worse than before I fixed the crankshaft position sensor wires. I have to give it gas while cranking to get it to start and it sputters for about 3-5 seconds and stales. This is why I am thinking the crankshaft sensor got damaged from the burnt wires.
Last edited by jac1979; 10-11-2009 at 06:37 PM.
#27
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CI 6,7,8,9,11 Vet
St. Jude Donor '08
Unplug the HVAC controller and see if the car will start. You will still get the U series DTC but, if theres somethin wrong with the controller, that will be out of the circuit.
Have you done a crank shaft relearn procedure?
Have you done a crank shaft relearn procedure?
#28
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Where is the HVAC controller so I can unplug?
#29
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#30
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Is this what you are talking about...I have a tune...this won't affect my tune will it?
http://www.hptuners.com/forum/showpo...72&postcount=5
#31
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Unpluged the HVAC controls and car still doesn't start. The controls in the dash...I'm assuming that's what you were talking about unless there is a controler box somewhere I am not aware of.
Do you think it's a good idea to get a fuel pressure gauge to make sure that is ok? I can hear the fuel pump hum before trying to start and the exhaust smells like gas when trying to crank.
Do you think it's a good idea to get a fuel pressure gauge to make sure that is ok? I can hear the fuel pump hum before trying to start and the exhaust smells like gas when trying to crank.
#32
Tech Contributor
Unpluged the HVAC controls and car still doesn't start. The controls in the dash...I'm assuming that's what you were talking about unless there is a controler box somewhere I am not aware of.
Do you think it's a good idea to get a fuel pressure gauge to make sure that is ok? I can hear the fuel pump hum before trying to start and the exhaust smells like gas when trying to crank.
Do you think it's a good idea to get a fuel pressure gauge to make sure that is ok? I can hear the fuel pump hum before trying to start and the exhaust smells like gas when trying to crank.
#34
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Nope I don't have service manuals...just ordered them though.
I know the the wires going to the CPS were burnt
I know the engine runs like an engine that is not properly timed
I know there is spark because the engine does start briefly
I know I changed the CPS and the problem still exists
You are right I am probably not going about this the best way with the best diagnostic tools. The dealership is probably going to be solving this one.
I know the the wires going to the CPS were burnt
I know the engine runs like an engine that is not properly timed
I know there is spark because the engine does start briefly
I know I changed the CPS and the problem still exists
You are right I am probably not going about this the best way with the best diagnostic tools. The dealership is probably going to be solving this one.
#35
Tech Contributor
Not necessarily, I'm just suggesting that you sit down, and make a list of knowns and unknowns if just from a fuel/air/spark perspective. It is not out of the realm of possibilities, that with all the cranking you've been doing, that the plugs are fuel fowled. Just make a list, I can help if needed.
#37
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Ok so I found out that I only had 10 psi of fuel pressure, changed fuel pump and filter and now I have 55-60 psi. But the car still idles very rough and I have to keep my foot on the gas to keep it running. I don't have the ability to do a crankshaft relearn because I don't have a tech 2 scan tool. But not sure this is really the problem because I don't think it should be running this rough even before a relearn is done. Because part of the relearn procedure is to idle the car to normal operating temperature.
Other things I've checked. Fuel pressure is consistent when key is on/engine off, cranking and while running.
Minifuses for inj1 and inj2 are both good.
Fuel injector resistances are all within acceptable range.
I have checked the connections at the PCM, they were dry, clean and no signs of corrosion.
The dealership told me the only problem was that I need to change the fuel pump so I have kind of lost faith in them.
Is there a way to test the MAF sensor that I am not seeing in the service manual?
Other things I've checked. Fuel pressure is consistent when key is on/engine off, cranking and while running.
Minifuses for inj1 and inj2 are both good.
Fuel injector resistances are all within acceptable range.
I have checked the connections at the PCM, they were dry, clean and no signs of corrosion.
The dealership told me the only problem was that I need to change the fuel pump so I have kind of lost faith in them.
Is there a way to test the MAF sensor that I am not seeing in the service manual?
#38
Tech Contributor
Ok so I found out that I only had 10 psi of fuel pressure, changed fuel pump and filter and now I have 55-60 psi. But the car still idles very rough and I have to keep my foot on the gas to keep it running. I don't have the ability to do a crankshaft relearn because I don't have a tech 2 scan tool. But not sure this is really the problem because I don't think it should be running this rough even before a relearn is done. Because part of the relearn procedure is to idle the car to normal operating temperature.
Other things I've checked. Fuel pressure is consistent when key is on/engine off, cranking and while running.
Minifuses for inj1 and inj2 are both good.
Fuel injector resistances are all within acceptable range.
I have checked the connections at the PCM, they were dry, clean and no signs of corrosion.
The dealership told me the only problem was that I need to change the fuel pump so I have kind of lost faith in them.
Is there a way to test the MAF sensor that I am not seeing in the service manual?
Other things I've checked. Fuel pressure is consistent when key is on/engine off, cranking and while running.
Minifuses for inj1 and inj2 are both good.
Fuel injector resistances are all within acceptable range.
I have checked the connections at the PCM, they were dry, clean and no signs of corrosion.
The dealership told me the only problem was that I need to change the fuel pump so I have kind of lost faith in them.
Is there a way to test the MAF sensor that I am not seeing in the service manual?
#39
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Thread Starter
No the dealership wanted $1200 to change the pump and filter. They wanted $750 for the pump alone. They kept harping on the lifetime warranty that would be provided on the part and labor. They took the fuel pressure at the fuel rail with a gauge which was 10 psi so they said. Kind of a simple diagnosis and stupid on my part for not doing that but the auto parts store that I visited didn't have a gauge. I have one now had to go out of my area to find one.
I ended up going to a local auto store and went with a Bosch replacement pump that was $450 with a lifetime warranty. Changed the pump and filter myself...was actually pretty easy just wish it fixed the problem.
Also got the service manuals so I am looking through those, I some diagnostic checks for the MAF wiring in the manuals which I am going to try tomorrow.
I ended up going to a local auto store and went with a Bosch replacement pump that was $450 with a lifetime warranty. Changed the pump and filter myself...was actually pretty easy just wish it fixed the problem.
Also got the service manuals so I am looking through those, I some diagnostic checks for the MAF wiring in the manuals which I am going to try tomorrow.
#40
Tech Contributor
No the dealership wanted $1200 to change the pump and filter. They wanted $750 for the pump alone. They kept harping on the lifetime warranty that would be provided on the part and labor. They took the fuel pressure at the fuel rail with a gauge which was 10 psi so they said. Kind of a simple diagnosis and stupid on my part for not doing that but the auto parts store that I visited didn't have a gauge. I have one now had to go out of my area to find one.
I ended up going to a local auto store and went with a Bosch replacement pump that was $450 with a lifetime warranty. Changed the pump and filter myself...was actually pretty easy just wish it fixed the problem.
Also got the service manuals so I am looking through those, I some diagnostic checks for the MAF wiring in the manuals which I am going to try tomorrow.
I ended up going to a local auto store and went with a Bosch replacement pump that was $450 with a lifetime warranty. Changed the pump and filter myself...was actually pretty easy just wish it fixed the problem.
Also got the service manuals so I am looking through those, I some diagnostic checks for the MAF wiring in the manuals which I am going to try tomorrow.
Like a said before, a comprehensive list of knowns and unknowns needs to be made. I mean no offense, but based on the troubleshooting so far, I can't help but wonder if the crank sensor wiring was repaired properly....did you verify the integrity of the wiring after the repair with a DMM? The chances of you having burned/shorted crank sensor wiring and a fuel pump failing at the same time are slim to none.....and now you are chasing the MAF? Make a list....go from there. Start with the very basics: Fuel, Air, Ignition.....
Last edited by lucky131969; 10-24-2009 at 08:32 PM.