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  1. bash

    87 r10 350 TBI runs rough

    I just noticed that he didn't actually install a block off plate. All he did was stuff a ball bearing in the hose that connects to the EGR valve. If there were actually something wrong with the EGR valve how could this solve the problem? Isn't a bad EGR valve either stuck open or stuck closed...
  2. bash

    87 r10 350 TBI runs rough

    The fuel pumps should get their power through the oil pressure switch after the engine cranks but someone bypassed that and wired the pump directly to a switched source; yet another thing that works, but needs to be corrected.
  3. bash

    87 r10 350 TBI runs rough

    So I took it to a local shop and he checked everything using a scanner including looking at the data in real time. I must have damaged the EGR because deleting it fixed the majority of the problem. He installed a block off plate and suggested that I leave it and that there was no downside to...
  4. bash

    87 r10 350 TBI runs rough

    So after taking the EGR off to check it and bolting it back on the truck will barely run even at idle. It is throwing MAP, TPS, and EGR codes now. I have no clue no. Any help guys?
  5. bash

    87 r10 350 TBI runs rough

    Took EGR off and it is clean as can be. Sucked on hose and it pulled in. When I blocked off the hose it stayed in and didn't leak down. No vac leaks that I can find. After the IAC relearn it seemed to run almost perfect, then started getting more and more back to how it has been misbehaving. It...
  6. bash

    87 r10 350 TBI runs rough

    I ran the IAC relearn and it runs much better now. The relearn seemed odd though. I haven't done this procedure before, but it seemed odd that when I jumpered the ECM pins and turned the switch on the IAC seemed to run non stop. It immediately started turning once the key was on and did not stop...
  7. bash

    87 r10 350 TBI runs rough

    HotRodPC: When I replaced the engine I cleaned the intake from the underside. I never actually took the EGR off, but cleaned everything that I could access from the underside of the manifold with the TBI off. smoothandlow84 I replaced the fuel filter a couple of days ago. I have never checked...
  8. bash

    87 r10 350 TBI runs rough

    I just went out to crank the truck and it wouldn't crank at all without hitting the gas pedal. I took the IAC out and cleaned around the spring and wiggled it around and it cranked and ran smooth for a couple of minutes then started the same thing again.
  9. bash

    87 r10 350 TBI runs rough

    My 350 TBI is running very rough. I have repaired a few things: 1. Leaking intake gasket (Leaking oil from the valley) 2. EGR solenoid replaced (Hose was connected to vent. Hose barb was broken) 3. Leaking vacuum hoses replaced 4. Tightened loose spark plug 5. Replaced fuel filter Here...
  10. bash

    Crankcase vent tube and open air element

    I read another thread somewhere that claimed the ECM looked for a resistance and that was all. Maybe it is just looking to see if the valve's coil is in tact (I assume this is basically a solenoid). I need to check for some codes tomorrow anyway so I will run with it unplugged and see.
  11. bash

    Crankcase vent tube and open air element

    We don't have emissions inspections here so that won't be an issue. On the note of the MAP sensor, mine was disconnected since I have had this truck. I tried connecting it and the engine went berzerk. It would barely run and started trying to backfire. I don't understand why the check engine...
  12. bash

    Crankcase vent tube and open air element

    Pics So I was wrong about this venting from the crankcase. It is actually attached to the exhaust manifold. If you look at the pics you can see a metal hose come off of the manifold, run towards the firewall, then at about even with the rear spark plug it bends and connects to a hose that runs...
  13. bash

    Crankcase vent tube and open air element

    Hi everyone, I just replaced the factory air cleaner assembly on my '87 R10 350 tbi with a new Spectre open element. The original air box was missing the fitting/filter piece that the crankcase vent tube was supposed to run into ("D" shaped hole in the box) so the vent tube was just crammed...

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