Need a smart person!!
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Cargo Master
Joined: Oct 2010
Posts: 2,762
Likes: 536
From: barton city mi
Need a smart person!!
I just registered here, and need help already.
I've got a '90E150, 4.9l auto. I can't get this thing running without using ether. Once I get it running, I have to hold my foot on it or it will stall. Once it warms up, the thing straightens out and will idle normally. The Air Intake control valve is good, as is the Throttle Position sensor, it's a new one. The coolant temp sensor is good. Has new battery as well.
Once I got it started, I disconnected the MAP, the engine started running rough initially, and then straightened out. Is this indicative of a bad MAP?
I've tried pulling codes and keep getting code 77, WOT not detected/operator error.
I've been told of an air temp sensor somewhere on the top of the throttle body, I sure can't find it.
ANY HELP will be appreciated.
Anyone willing to spend some time and walk me thru this? I think the only things left are the MAP and ECM.
I've got a '90E150, 4.9l auto. I can't get this thing running without using ether. Once I get it running, I have to hold my foot on it or it will stall. Once it warms up, the thing straightens out and will idle normally. The Air Intake control valve is good, as is the Throttle Position sensor, it's a new one. The coolant temp sensor is good. Has new battery as well.
Once I got it started, I disconnected the MAP, the engine started running rough initially, and then straightened out. Is this indicative of a bad MAP?
I've tried pulling codes and keep getting code 77, WOT not detected/operator error.
I've been told of an air temp sensor somewhere on the top of the throttle body, I sure can't find it.
ANY HELP will be appreciated.
Anyone willing to spend some time and walk me thru this? I think the only things left are the MAP and ECM.
Thread Starter
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Cargo Master
Joined: Oct 2010
Posts: 2,762
Likes: 536
From: barton city mi
Where is the sensor for head temp?
Thanks for the reply.
Thread Starter
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Cargo Master
Joined: Oct 2010
Posts: 2,762
Likes: 536
From: barton city mi
That's what I'm wondering as well, does it have one, that is. Someone else said to check the intake air temp sensor. I'd think it would be in the airbox, or maybe in the snorkle, but can't find that one either.I'm beginning to be reminded of why I haven't worked on these things very much since the days of carburetors!
Laughing Gas
Joined: Oct 2001
Posts: 996
Likes: 5
From: Albany, Good Ol' USA
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Elder User
Joined: Jun 2010
Posts: 627
Likes: 0
From: NY, NY
I just registered here, and need help already.
I've got a '90E150, 4.9l auto. I can't get this thing running without using ether. Once I get it running, I have to hold my foot on it or it will stall. Once it warms up, the thing straightens out and will idle normally. The Air Intake control valve is good, as is the Throttle Position sensor, it's a new one. The coolant temp sensor is good. Has new battery as well.
Once I got it started, I disconnected the MAP, the engine started running rough initially, and then straightened out. Is this indicative of a bad MAP?
I've tried pulling codes and keep getting code 77, WOT not detected/operator error.
I've been told of an air temp sensor somewhere on the top of the throttle body, I sure can't find it.
ANY HELP will be appreciated.
Anyone willing to spend some time and walk me thru this? I think the only things left are the MAP and ECM.
I've got a '90E150, 4.9l auto. I can't get this thing running without using ether. Once I get it running, I have to hold my foot on it or it will stall. Once it warms up, the thing straightens out and will idle normally. The Air Intake control valve is good, as is the Throttle Position sensor, it's a new one. The coolant temp sensor is good. Has new battery as well.
Once I got it started, I disconnected the MAP, the engine started running rough initially, and then straightened out. Is this indicative of a bad MAP?
I've tried pulling codes and keep getting code 77, WOT not detected/operator error.
I've been told of an air temp sensor somewhere on the top of the throttle body, I sure can't find it.
ANY HELP will be appreciated.
Anyone willing to spend some time and walk me thru this? I think the only things left are the MAP and ECM.
You did not mention if you did a tune-up. Did you?
Don't waste your time on checking single components. Run the diagnostics properly and let the computer tell you.
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Thread Starter
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Cargo Master
Joined: Oct 2010
Posts: 2,762
Likes: 536
From: barton city mi
I sold it for $200, and I never did find the problem. The guy that bought it lives close by, and whenever he fixes it, I'll let you guys know what it was. I'm just a bit overwhelmed right now, and eliminating problem children.
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