Vacuum leak would be my guess. Take a propane torch (unlit) and go around the fittings and parts. If you hear the engine change (sucking some propane into the engine), you found your leak.
Vacuum leak would be my guess. Take a propane torch (unlit) and go around the fittings and parts. If you hear the engine change (sucking some propane into the engine), you found your leak.
That was going to be my next move.
That and cleaning the maf and throttle body.
But I was successful in guilting my mechanic’s shop into working with he truck in today, so I turned it over to them.
Below zero here and only getting colder. Sooner I can get this truck back into the stable and running the better off I am. Don’t want to have to fire up the diesel pickups just to run around in if I can help it.
Leak somewhere in the intake. So they ordered intake gaskets and oil pressure sensor and knock sensors. Just going to have them do the work and hopefully get it done by tomorrow.
If you don't have a spacious and warm spot with all the tools you might need as well as being able to leave things disassembled should you get interrupted by "life", then $900 is a bargain.
I can walk on water.......................but I do stagger a bit on alcohol.
Bsa, I thought the same thing. Low idle has nothing to do with an intake leak. If there was an intake leak, you'd have a HIGH idle.
Gawd they charged him an insane amount of money for unessasary work.
I'd stop taking my vehicle to them.
From home:
check fuel pressure, replace fuel filter, replace fuel pump. Clean mass air flow sensor.
Check condition/ color of spark plugs, Check ignition system, clean connections. Sometimes ignition coils or coil packs die intermittently only when engine heats up.cheap to replace.
I did. Only thing that showed was a O2 sensor. Replaced that.
Ended up with new intake gaskets and replaced the knock sensors and oil pressure sensor while it was all apart.
It is done to the tune of ~$900
OEM O2 sensor? Have you ran it after changing and deleting the codes, then checked the codes? Usually 02 sensor doesn't cause that much trouble, but sometimes aftermarket sensors are One Size Sorta Fits All. Buddy went through that with a Toyota. The sensors signal didn't exactly match OEM and wouldn't work.
He paid the Toyota royalty and everything was OK.
Parents who say they have good kids..Usually don't!
Bsa, I thought the same thing. Low idle has nothing to do with an intake leak. If there was an intake leak, you'd have a HIGH idle.
Gawd they charged him an insane amount of money for unessasary work.
I'd stop taking my vehicle to them.
From home:
check fuel pressure, replace fuel filter, replace fuel pump. Clean mass air flow sensor.
Check condition/ color of spark plugs, Check ignition system, clean connections. Sometimes ignition coils or coil packs die intermittently only when engine heats up.cheap to replace.
Only use OEM stuff
Initial problem was extreme high idling on startup, especially when cold.
Intake gasket was leaking. Old school test showed that.
The knock sensors ended up being a big chunk of the bill. And then after the first fix, find out there was a bad batch so they had to be replaced again.
I can't remember what the book is on replacing an intake gasket on this engine. Maybe ~4. That alone is $500+.
Had the work done. Ran really well but started having problems again. Now more of a true dying at low idle, not just rpms dropping.
Took back in. They suspect either knock sensors didn't get plugged all the way in or defective new knock sensors
Nothing like throwing parts at a problem when you don't know wth it is. Too bad, most shops are incompetent.. Hopefully you get it figured out.
Had a bad batch of knock sensors.
Replaced them at no cost and truck runs good now. Except throwing knock sensor codes
I've got a buddy who has owned his own mechanics shop here in Helena for 10+ years. He says the quality of parts in the last few years has been total $hit. At least NAPA, CarQuest, and O'reilly's pay his warranty labor time when he has to pull everything apart for a crap part.
If you don't have a spacious and warm spot with all the tools you might need as well as being able to leave things disassembled should you get interrupted by "life", then $900 is a bargain.
Yeah, that's an easy DIY project starting in June in Montana.
Fight fire, save lives, laugh in the face of danger.
