gaz05
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| posted on 27/11/13 at 02:43 PM |
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First start and need advice on poor running.
Not exactly first start because I ran it last year just to make sure it ran. It's in permanently now and has just moved under it's own
power for the first time ever. Sort of pleased. Cooling kicks in when it should. Starts first time. No leaks etc.
However it doesn't want to rev. Bogs when you first blip the throttle. When you get past that it's misfiring badly. Plugs are very sooty.
It's a 2L zetec with homemade plenum and running an R1 can. Original ECU (DEEP) with pretty much all the sensors Ford use except P/S switch,
Purge etc.
Any thoughts? Please don't tell me to put it on diagnostics because I've cut all the plugs off.
Plenum
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britishtrident
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| posted on 27/11/13 at 04:39 PM |
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Thats the sort of symptom you get if a throttle position sensor or map sensor isn't supplying a signal to the ecu..
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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big_wasa
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| posted on 27/11/13 at 06:20 PM |
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I can tell you that the black top Tps on the throttle body gives a different value to that of the silvertop. It gives a flat spot but it does still
run.
Other thing to look for is air leaks. If the ecu thinks its running lean it will stick more juice in. I like the newer ecu's because of the
diagnostics but it can still run like a dog and not show a code.
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gaz05
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| posted on 27/11/13 at 08:50 PM |
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Cheers
Just been out and checked a silvertop TPS with a Blacktop TPS
Silvertop 3.6k ohm (idle) -- 0.25k ohm (wot)
Blacktop 4.6k ohm (idle)-- 1.25k ohm (wot)
This could be the problem. Unfortunately they're not interchangeable and I gave away my silvertop throttle body.
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big_wasa
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| posted on 27/11/13 at 09:00 PM |
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No its not "the problem" but does give a flat spot on the road. Ive still done one for a guy that passed iva no problem.
It will be an air leak, a sensor down, or a wiring fault to the sensor that appears to be down.
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gaz05
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| posted on 27/11/13 at 09:52 PM |
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I'm not seeing 12v at the MAF. Will have a look tomorrow.
Cheers
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ashg
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| posted on 27/11/13 at 10:38 PM |
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it needs the maf to calculate the fuel so it will most likely be that.
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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gaz05
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| posted on 30/11/13 at 12:39 AM |
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You've got to be a special kind of stupid to wire a plug like this.
Seems to be running fine now. Thanks for the help.
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big_wasa
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| posted on 30/11/13 at 08:02 AM |
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All good.
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