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Author Topic: TBI Burb dying in gear, My Turn.  (Read 62348 times)

Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #30 on: May 24, 2007, 07:59:17 am »
700R4, I honestly haven't though about the TCC...  But is has been dying in park, so I kinda ruled it out.
Spray pattern is the one first thing I checked when it was throwing codes and had to replace some sensors and it was good, but that was a while back, I will check it again...

This thing has be baffled!
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Offline VileZambonie

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Re: TBI Burb dying in gear, My Turn.
« Reply #31 on: May 24, 2007, 10:17:32 am »
Ok so it just fizzles out? If you tried to keep it running you can though and it fires right back up right? You've made sure it's maintaing fuel pressure when it dies right?
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #32 on: May 24, 2007, 11:54:21 am »
Yep, and it isn't consistent dying in Park.  I let it run one day for 15 minutes, put it in Reverse sputter....
Another day, you let it run and it ran for about 3 minutes and then fizzled off.

Yesterday when I scanned it again, it ran fine for about 10 minutes, put it in drive and it died, (everytime) after about 3 tries going into gear it started died once in park.

If I catch it, it will stay running.  If I drive it and slow down and give it some gas, it will stay running.  If I drive normal (to me) I consistently have to pat the gas to keep it running, if I drive it slow it can catch it everytime.

I KNOW it is going to be something I am not thinking of... 

Last time I checked the fuel pressure it sat steady at 13 while it was running.  It is hooked before the filter, so I need assistance in checking the pressure going into gear (and with a baby that isn't easy) because the line isn't long enough on the gauge to reach inside the truck.  I will see if I can con a friend one day this week.  I would assume if I have good pressure when running in park Drive wouldn't upset it, but....

I do know the fuel sender is bad, so I may pull it and replace the pump anyway.  The only think I can think of that would cause this is a bad regulator or pump....
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Offline VileZambonie

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Re: TBI Burb dying in gear, My Turn.
« Reply #33 on: May 24, 2007, 06:45:39 pm »
Have you checked the fuel pump relay? Also does it do it when it's cold or only when it warms up? If it only does it when it warms up try forcing it into open loop and see if it still dies. You can force open loop or field service mode and see if it still stalls to help determine if in fact it is an engine management problem or if it's electrical or fuel pressure related. Did you make sure the injector connectors weren't criss crossed from L to R?
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #34 on: May 24, 2007, 07:59:01 pm »
Ok just started it up and put in R immediately.  I starts to stall (bad) but it recovers (I haven't check this before).  Apparently it will recover when cold.  Forced it to open loop by jumping the ALDL AB conncetor and it still stalls...

I have hear the fuel pump relay under the hood when I switch power...

Injectors aren't crossed.
« Last Edit: May 24, 2007, 08:20:31 pm by Captkaos »
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Offline VileZambonie

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Re: TBI Burb dying in gear, My Turn.
« Reply #35 on: May 24, 2007, 08:42:33 pm »
 
Quote
I have hear the fuel pump relay under the hood when I switch power...
??? say that again? lol Ok so you can rule out O2 since it happens in open loop. unplug your ECT and see if it does it. If it still does it unplug your TPS and see if it does it. What you are trying to determine here again is if it's a sensor input malfunction. Also have you checked your grounds and connections at the ECM?
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #36 on: May 24, 2007, 08:54:31 pm »
ok I will start pulling sensors.
I know if I pulled the IAC in the past it stayed running, but has a high idle....
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #37 on: May 24, 2007, 09:16:53 pm »
When I pull the CTS out of the manifold it won't crank..
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Offline VileZambonie

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Re: TBI Burb dying in gear, My Turn.
« Reply #38 on: May 25, 2007, 05:13:51 am »
What? your engine coolant temp disconnected the starter will not crank? It's not related to the cranking circuit of the ignition switch. something is definitely wrong there. Check all of your connections from the battery to the engine block, the back of the pass side cylinder head and at the intake manifold for good tight grounds. If you plug back in your ECT sensor it cranks again? ???
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #39 on: May 25, 2007, 08:15:02 am »
No, not crank ;D  It won't start up.  Engine turns over, no fire...
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Offline VileZambonie

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Re: TBI Burb dying in gear, My Turn.
« Reply #40 on: May 25, 2007, 01:01:56 pm »
hmmm - I would suggest checking those grounds anyway.  Have you tested your map sensor? High vacuum you should see around 1.25V and increase as vacuum decreases. If it responds slowly -replace it. This is your main engine load sensor and if it happens cold your ECM is primarily looking at Map/Dist Ref/TPS and ECT. You know now it's related to one of these circuits, you said the TPS is definitely good and set correctly. I am going to say Map or ECT if not check the ECM
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #41 on: May 25, 2007, 05:07:58 pm »
I will swap the MAP out of my DD and see what happens and go from there...
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #42 on: May 25, 2007, 06:00:41 pm »
I think I found it!!!  If I am right it is exactly what I said, something stupid that I missed.  Test driving now, details coming....
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Offline DnStClr

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Re: TBI Burb dying in gear, My Turn.
« Reply #43 on: May 26, 2007, 01:02:47 am »
I hope you found the problem, Chris. altho- I hate to see this thread coming to an end. It's been a good read..
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Don
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Offline Captkaos

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Re: TBI Burb dying in gear, My Turn.
« Reply #44 on: May 26, 2007, 10:11:57 am »
Well, it wasn't the cause of the problem, but the vacuum section of the cruise control has a line that ran behind the distributor which I didn't see and it had a hole in it.  After plugging it off at the source and cranking it stayed running when going into gear cold.  Drove it about 1 mile and then it started acting like it was running out of gas.  Kept it running while driving and threw code 22 and 44 after a wide open romp. 

I cleared the codes and plan to check the TPS and O2.... 

I did replace the battery to fix my motorcycle and put in a new window switch on my wifes car so I don't feel Too bad....
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