89 BII not running right.
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89 BII not running right.
I have an 89 BII 2.9l, Auto. Hesitates when given throttle. Idles erratically. Changed IAC, IAT, MAP, PCV, Plugs, cleaned throttle. The dist. cap and rotor, TPS, ECT, CAT were changed about one year ago. It seems to run better when cold. Pulled the codes and get 42 and 13 KOER. All pass on KOEO. Did wiggle test too all ok. Also need help on base idle and TPS set up. Removed TFI, resistance checks ok but dont know if heat is affecting it. Are internal dist. parts available or do you need to replace the whole thing (not easiest thing to get to).
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Fuel pressure 40psi KOEO, 30 psi KOER. I found some info on base idle setting. It says to disconnect IAC and adjust throttle plate adjustment screw to 650 rpm. Then reconnect IAC, idle should go to about 850 rpm. and TPS not be over 1v. Is this correct and is there a minimum voltage for TPS at idle. If i am at .8v +/- .1v would this be ok for TPS at idle or would it throw more codes. Also it rained for 4 days straight here in GA. what would moisture effect most on this BII.
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With the new parts installed and idle set up it seems to idle better but not normal. Codes do not appear anymore. I had emmissions test done today results are: on the 25/25 test, Co = 3.97 failed (need 2.36 to pass)..Hc = 194 failed (need 189 to pass) ; on the 50/15 test, Co = 4.44 (need 1.74 to pass). Any input on making emmisions better. All help is appriciated.
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From: Yokosuka, Honshu, Japan
Did you run the **** out of it prior to the test? I always ran the **** out of mine prior to emissions testing and never failed. Sounds like it's got some carbon buildup inside the combustion chamber. In answer to your distributor internals parts question - yes, you can buy a new pickup as well as other small parts for it, IIRC. Also wondering if your plugs are too 'cold' for your climate, etc. Did you replace the breather filter on the non-valved PCV hose? Wondering if your evap cannister needs replacement as well. Some things to consider. There are a few ways to de-carbon your engine. Ford sells stuff for it, I've seen people use SeaFoam, and even others spraying water mist from a spray bottle into the TB with the engine at a higher idle (2000-2500 rpm?). A one-year-old CAT converter shouldn't have already failed, so somewhere else is where the problem is.
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Ran the **** out of it and passed all that failed. And failed what had passed. NOX out of range now. NOX = 2129 failed (1233 to pass).
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Wonder if it's running rich or if you need to de-carbon the engine. I forget what gives off the NOX in all of that - I think that is part of the by-product of the Catalytic process. What brand / octane rating gasoline are you using? I've always run the 87 octane with no problems. Did you allow any 'equalization time' after you ran the **** out of it? Might be why the NOX was out of range, but who knows. Older engines that have not been well maintained (not saying it hasn't been, but) and have dirty combustion chambers with excess carbon buildup sometimes sniff differently on each emissions test. Have you recently run fuel injector / fuel system cleaner through it to see if the injectors have buildup?
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OXIDES OF NITROGEN OR NOx
Various compounds of nitrogen and oxygen, both present in the air used for combustion, are formed in the cylinders during excessive high engine temperatures and are part of the exhaust gas. They become part of the tailpipe emissions if not reduced in the exhaust system.
Does your year Bronco have an EGR valve?
The EGR system is comprised of three main components, the EGR Valve, the Pressure Feedback Transducer, and the Electronic Vacuum Regulator.
Various compounds of nitrogen and oxygen, both present in the air used for combustion, are formed in the cylinders during excessive high engine temperatures and are part of the exhaust gas. They become part of the tailpipe emissions if not reduced in the exhaust system.
Does your year Bronco have an EGR valve?
The EGR system is comprised of three main components, the EGR Valve, the Pressure Feedback Transducer, and the Electronic Vacuum Regulator.
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Correct Kernel, no EGR. Decided to return cat to autozone. And while tranny cross member was out my son and I decided to install an A4LD from an 88 BII that i had rebuilt (first time automatic rebuild for me) to be used in the 89 BII (yes I have two of them).
Not sure why I decided to own two of them it just happened. Any how I installed 88 tranny in 89. Ran well for two days. And today my son took it for emissions but first had to stop and get gas. When gas fillup was done he went to drive it around for emissions but the truck would only creep along in R, OD, D, 1, 2. So I left work and picked him up to go home and get some tools. When we returned to troubleshoot problem I thaught maybe debris might have lodged in the valve body. So with a Ford being a Ford I got my hammer out and beat on the transmission a little thinking it might loosen a sticking valve. Started it and stomped the gas a little and was able to get to drive in OD, D, 1, or 2 but reverse seems as if it is in drive while in reverse. Almost like the brakes are on while trying to go in reverse. So I am going to clean the 89's valve body and install on the 88 tranny. Will that work ok ? Emissions will have to wait for tranny issues to be solved first.
Not sure why I decided to own two of them it just happened. Any how I installed 88 tranny in 89. Ran well for two days. And today my son took it for emissions but first had to stop and get gas. When gas fillup was done he went to drive it around for emissions but the truck would only creep along in R, OD, D, 1, 2. So I left work and picked him up to go home and get some tools. When we returned to troubleshoot problem I thaught maybe debris might have lodged in the valve body. So with a Ford being a Ford I got my hammer out and beat on the transmission a little thinking it might loosen a sticking valve. Started it and stomped the gas a little and was able to get to drive in OD, D, 1, or 2 but reverse seems as if it is in drive while in reverse. Almost like the brakes are on while trying to go in reverse. So I am going to clean the 89's valve body and install on the 88 tranny. Will that work ok ? Emissions will have to wait for tranny issues to be solved first.
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Let tranny cool and tried it again OD is the only gear that will move the truck. As I drift backwards in neutral and shift to reverse it will stop the truck. Does the same going forward in neutral then I shift to D, 1, 2 it actually stops the truck. OD seems ok. Still would like to know if an 89 valve body will work on an 88 tranny. Planning on vb swap tommorrow evening.
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From: Yokosuka, Honshu, Japan
Should work, as they are both A4LDs. I don't think there was that much difference in any of them - with exception to the fact that some years had a single solenoid for the TCC, other years had the TCC solenoid and 3-4 shift solenoid. Not sure if that comes into play in your situation or not. I would also check for kinked/blocked cooler lines as well.
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I am still after the problem. Installed replacement valve body and still had issues. Then after looking at the manual I realized I installed the pressure regulator valve/spring keeper incorrectly. Since it is back apart agian I am going to flush the tranny cooling system too.
