01 3.3 grand driving me nuts!!
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01 3.3 grand driving me nuts!!
I will try to keep this short. I have been a mech for years, but make more money with talents Army gave me, so no real shop to work out of.
2001 3.3 grand caravan 140,000 miles. last year new radiator water pump etc.
It started running wierd, I thought throttle position sensor. Code finnally said ecu, so i replaced ecu. ran GREAT 1 day then back to rough, this time codes O2 bank 1, so i replaced both.
Still runs weird, fine going down the road, but has a dead spot whne leaving from dead stop. does not sounds or feel like a dead miss anywhere.
place i got ecu from says the injector harness is probably bad, looking at what i can see, i see no issues.
check engine light is back on, so i will take it for another scan and see what it is now.
some other issues
radiator had a hole, so replaced it again. water was very rusty in just one year. It no longer leaks, and temp gauge never never shows it getting hot. So i am thinking about doing another water pump, because when you pull in the garage it is steaming a bit out the overflow. and smells antifreeze strong. no leaks though.
noticed also that fans seem to never come on, it is cold out, but even with a/c on no fans.
I looked for relay behind grill, per diagram, but it says four wire, and what ever is there is only 2 wire.
2001 3.3 grand caravan 140,000 miles. last year new radiator water pump etc.
It started running wierd, I thought throttle position sensor. Code finnally said ecu, so i replaced ecu. ran GREAT 1 day then back to rough, this time codes O2 bank 1, so i replaced both.
Still runs weird, fine going down the road, but has a dead spot whne leaving from dead stop. does not sounds or feel like a dead miss anywhere.
place i got ecu from says the injector harness is probably bad, looking at what i can see, i see no issues.
check engine light is back on, so i will take it for another scan and see what it is now.
some other issues
radiator had a hole, so replaced it again. water was very rusty in just one year. It no longer leaks, and temp gauge never never shows it getting hot. So i am thinking about doing another water pump, because when you pull in the garage it is steaming a bit out the overflow. and smells antifreeze strong. no leaks though.
noticed also that fans seem to never come on, it is cold out, but even with a/c on no fans.
I looked for relay behind grill, per diagram, but it says four wire, and what ever is there is only 2 wire.
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Originally Posted by RedDogRacing
I will try to keep this short. I have been a mech for years, but make more money with talents Army gave me, so no real shop to work out of.
2001 3.3 grand caravan 140,000 miles. last year new radiator water pump etc.
It started running wierd, I thought throttle position sensor. Code finnally said ecu, so i replaced ecu. ran GREAT 1 day then back to rough, this time codes O2 bank 1, so i replaced both.
Still runs weird, fine going down the road, but has a dead spot whne leaving from dead stop. does not sounds or feel like a dead miss anywhere.
place i got ecu from says the injector harness is probably bad, looking at what i can see, i see no issues.
check engine light is back on, so i will take it for another scan and see what it is now.
some other issues
radiator had a hole, so replaced it again. water was very rusty in just one year. It no longer leaks, and temp gauge never never shows it getting hot. So i am thinking about doing another water pump, because when you pull in the garage it is steaming a bit out the overflow. and smells antifreeze strong. no leaks though.
noticed also that fans seem to never come on, it is cold out, but even with a/c on no fans.
I looked for relay behind grill, per diagram, but it says four wire, and what ever is there is only 2 wire.
2001 3.3 grand caravan 140,000 miles. last year new radiator water pump etc.
It started running wierd, I thought throttle position sensor. Code finnally said ecu, so i replaced ecu. ran GREAT 1 day then back to rough, this time codes O2 bank 1, so i replaced both.
Still runs weird, fine going down the road, but has a dead spot whne leaving from dead stop. does not sounds or feel like a dead miss anywhere.
place i got ecu from says the injector harness is probably bad, looking at what i can see, i see no issues.
check engine light is back on, so i will take it for another scan and see what it is now.
some other issues
radiator had a hole, so replaced it again. water was very rusty in just one year. It no longer leaks, and temp gauge never never shows it getting hot. So i am thinking about doing another water pump, because when you pull in the garage it is steaming a bit out the overflow. and smells antifreeze strong. no leaks though.
noticed also that fans seem to never come on, it is cold out, but even with a/c on no fans.
I looked for relay behind grill, per diagram, but it says four wire, and what ever is there is only 2 wire.
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new code p1491
radiator fan relay
Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
well i am going to throw the water pump and new thermostat on it just for fun, now i need to find the relay, i do not see it behind the grill
radiator fan relay
Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
well i am going to throw the water pump and new thermostat on it just for fun, now i need to find the relay, i do not see it behind the grill
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OK found the relay. Disconnected and crossed wires and both fans work, so it is relay or relay is not getting signal.
trying to get them to send me another ecu.
while i wait i will replace the relay and harness if i can get one.
trying to get them to send me another ecu.
while i wait i will replace the relay and harness if i can get one.