Weird symptoms 3vze
Oct 18, 2015 | 02:09 PM
#1
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Weird symptoms 3vze
My 94 3vze 240k miles has had a issue, becoming worse over the period of a month, first its became harder to start, taking much longer than usual. Then it started getting loss of power like it was running on 2 cylinders, only happens after driving for like 20 mins. But if i stop turn off the truck and restart, it will run fine for a while. Recent things I have changed, spark plugs and wires, starter,distributor cap and rotor, battery, alternator, tps, coolant temp sensor, cleaned throttle body, seafoamed vacuum lines, new 02 sensor, deleted egr. What am i missing? Suggestions would be greatly appreciated.
Last edited by Ashton123; Oct 18, 2015 at 02:53 PM.
Oct 19, 2015 | 12:05 PM
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From: Dallas, TX
My 94 3vze 240k miles has had a issue, becoming worse over the period of a month, first its became harder to start, taking much longer than usual. Then it started getting loss of power like it was running on 2 cylinders, only happens after driving for like 20 mins. But if i stop turn off the truck and restart, it will run fine for a while. Recent things I have changed, spark plugs and wires, starter,distributor cap and rotor, battery, alternator, tps, coolant temp sensor, cleaned throttle body, seafoamed vacuum lines, new 02 sensor, deleted egr. What am i missing? Suggestions would be greatly appreciated.
In what way is it harder to start? Does it turn over or do you hear just a clicking sound?
Oct 19, 2015 | 12:13 PM
#4
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From: San Francisco East Bay
It DOES sound like a fuel problem. While it is not an easy job, it is a maintenance item, so I'd start with replacing the fuel filter. https://www.yotatech.com/forums/f116...ctures-218962/
If it is ACTUALLY running on less than 6 cylinders, you could try removing plug wires one at a time to see if you can identify the cylinder. You could have a marginal plug wire or plug, or a clogged injector.
If it is ACTUALLY running on less than 6 cylinders, you could try removing plug wires one at a time to see if you can identify the cylinder. You could have a marginal plug wire or plug, or a clogged injector.
Oct 19, 2015 | 04:42 PM
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Thanks for the replys, today i checked cat which was good also igniter which was fine, have changed fuel filter 5,00 miles ago, also have swapped out coil for new one. So i guess i have a bad fuel pump or bad injector.
Jumped fuel pump can hear it working, haven't tested pressure at fuel rails. Feels like its running supper lean.
"In what way is it harder to start? Does it turn over or do you hear just a clicking sound?"
No it cycles for 10, 20 secs til it turns over and runs. Slowly getting worse over a period of a month.
Jumped fuel pump can hear it working, haven't tested pressure at fuel rails. Feels like its running supper lean.
"In what way is it harder to start? Does it turn over or do you hear just a clicking sound?"
No it cycles for 10, 20 secs til it turns over and runs. Slowly getting worse over a period of a month.
Last edited by Ashton123; Oct 19, 2015 at 04:48 PM.
Oct 20, 2015 | 03:25 PM
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Well found out what it was, checked fuel pressure 20 psi at rails, 5 to 10 when symptoms appeared. Changed fuel pump and found the problem the tubing connecting the pump to fuel line was ever so slightly, almost off, at a angle where it would get just enough pressure. changed fuel pump and now runs like it never has before!
Should have known, but the symptoms were so weird, but i guess i got new parts that probley should have been replaced anyways.
Should have known, but the symptoms were so weird, but i guess i got new parts that probley should have been replaced anyways.
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