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88 n/a wants to idle around 3k?
ok so the trottle cable is loose so its not artificially set high but it wants to idle around 3k the motor seems like its trying to fix its self as in it will drop to 2500 and bounce back up sometimes. im thinking its a major vac leak. but ive never seen one stay running that high, usually if theres a vac leak that large it'll just bog down from lack of fuel.
any thoughts? thanks |
Sounds like a TPS or T-wax issue.
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it might be the BAC being stuck.
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Originally Posted by Black Knight RX7 FC3S
(Post 8645329)
it might be the BAC being stuck.
Ended up being the thermo wax being stuck but that only makes it idle at 1500, not 3000. Check the cruise control cable, make sure it is not to tight as well. |
ok the lowest idle i could get was 2k if i adjust the timing to lower it it dies.
i have replaced the following with known good components; tps afm ecu i have pulled the upper manifold and replaced the gaskets i pulled off the tb and its plates close fully the car pops at when it tries to idle and the inside of the strait piped exhaust glows bright red. so im thinking its running rich, and where its getting enough air to run at 3k is still a mystery. tany thoughts |
Originally Posted by DREYKO
(Post 8649226)
ok the lowest idle i could get was 2k if i adjust the timing to lower it it dies.
i have replaced the following with known good components; tps afm ecu i have pulled the upper manifold and replaced the gaskets i pulled off the tb and its plates close fully the car pops at when it tries to idle and the inside of the strait piped exhaust glows bright red. so im thinking its running rich, and where its getting enough air to run at 3k is still a mystery. tany thoughts Fixed both of those and it has idled fine ever since. |
ok guys update
i swapped the following now; ecu, tps, afm, cas, tb, all manifolds, fuel rails, stripped emissions, new vac lines, swapped fuel injectors. and it still does it? im totally lost. any suggestions are awesome the motors a recent mazda reman, runs fine over 3k btw thanks |
Air is getting past the TB some how.
Either through a vacume leak or through the TB plates not closing all the way (like mine). First spray down ALL of the vacume lines with brake cleaner to see if they are leaking. If not then pull the TB off and make sure the TB is closing ALL the way. |
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