Announcement

Collapse
No announcement yet.

Weird noise

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    Weird noise

    Ok so my '90 wagon is making a weird noise from under the hood. Sounds like you are shaking a spray paint can real fast. It makes it when:

    You are cruising down the highway. Let off the throttle and it doesn't do it. Press the gas just a hair and it starts making noise. Press it just a little more and it goes away. Other then when the throttle is closed it only does it when you are cruising and at the top 1/4" of throttle. Past that it doesn't do it. I was thinking maybe valve train noise or something but I don't know...
    Tags: None
    #2
    Bump

    Comment

      #3
      may be detonation. Try running a tank of premium and see if it takes it away.

      85 4 door 351 Civi Crown Victoria - Summer daily driver, sleeper in the making, and wildly inappropriate autocross machine
      160KMs 600cfm holley, shorty headers, 2.5" catted exhaust, 255/295 tires, cop shocks, cop swaybars, underdrive pulley, 2.73L gears.
      waiting for install: 3.27's, Poly bushings, boxed rear arms, 2500 stall converter, ported e7's, etc

      06 Mazda 3 hatch 2.3L 5AT (winter beater that cost more than my summer car)

      Comment

        #4
        Originally posted by johnunit View Post
        may be detonation. Try running a tank of premium and see if it takes it away.
        I usually run 89 but I tried 93 and it's still there.

        Comment

          #5
          Check your timing. If it is over-advanced it will detonate. Running the wrong plugs, having a too-lean fuel mix, or having malfunctioning EGR also makes this worse.
          86 Lincoln Town Car (Galactica).
          5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

          91 Lincoln Mark VII LSC grandpa spec white and cranberry

          1984 Lincoln Continental TurboDiesel - rolls coal

          Originally posted by phayzer5
          I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

          Everything looks like voodoo if you don't understand how it works

          Comment

            #6
            Originally posted by gadget73 View Post
            Check your timing. If it is over-advanced it will detonate. Running the wrong plugs, having a too-lean fuel mix, or having malfunctioning EGR also makes this worse.
            I'll check the timing, I just got a new light. Do you unplug the TFI to check the timing or is there a spout connector?

            I recently replaced a bunch of vacuum lines and put a new egr valve, position sensor and solenoid in.

            Comment

              #7
              unplug the SPOUT connector, which is next to the TFI. Should be 10BTDC.

              Check it for codes too, just in case that has anything to tell you
              86 Lincoln Town Car (Galactica).
              5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

              91 Lincoln Mark VII LSC grandpa spec white and cranberry

              1984 Lincoln Continental TurboDiesel - rolls coal

              Originally posted by phayzer5
              I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

              Everything looks like voodoo if you don't understand how it works

              Comment

                #8
                Originally posted by gadget73 View Post
                unplug the SPOUT connector, which is next to the TFI. Should be 10BTDC.

                Check it for codes too, just in case that has anything to tell you
                Ok thanks! I'm going to try and check over the weekend, I'll let you know what turns up.

                Comment

                Previous template Next
                Working...
                X