right thought id do some maintenance today, striped all the intake hoses back, replaced the cracked ones and refitted, also replaced the ptu with a known good one, and same with the maf, then cleaned the connectors on the rad temp sensor, and the tps. put it all back together and now she turns over but wont start!!!

 

really confused,

 

i then changed the ptu and maf back to the originals still no start...

 

she turns over, but not starting, and their is fuel pressure.

 

help!!!!1

just done an ecu check,

 

got 21 and 13, so ptu and engine temp sensor, (well temp sensors why it runns rich:blushing:)

 

why is the ptu not working tried 2 ptus the one that was on the car and the one from my red one both good ptus? and suggestions?

i think im going to cry now....

 

fixed botyh faults now code 55 yay (all good) ... nope...:censored:

 

she may have fired up but shes running sooooo lumpy its frustrating,

 

my instant though was oh shit i've lost a cylinder... nope all 6 are firing, (unplugged each in turn.)

 

theirs no smoke but its obviously misfiring, tried letting her run for a min or 2 in case id flooded it when tring to start earlier but nope.

 

anyone have any ideas,

You'll have the codes also because you changed the PTU and teh ECU may see it as a fault.

 

Assuming your temp sensor was cruddy will explain the difficult start and lumpyness.

 

Take it for a drive to burn of the fuel on the plugs or take out the front 4 and clean and see if it improves.

 

Also double check connections are good on PTU and MAF.

 

Smithy

thanks, just had a look over the car, and it turns out the misfire is that cylinder 6 isn't...

 

so i'm still confused guess it could be the ptu still isn't right. either that or its the injector coil pack or spark plug? any thing else it could be?

Id start with the area's you just worked on, i had the same problem last year, due to changing the PTU for another, found that i just couldnt get the car started, swapped it back for the one that was on it, it ran but was lumpy as hell and misfired.

 

Take the connectors off the PTU, give um a good clean up and refit. considering you say it was running fine before that, that would be my first port of call, my second would be the maf again.

thanks ill do that,

 

before it ran rich, and had an intermittent fault, idle dropped every now and then and ocationally hesitated, but after finding the temp sender was fubar'ed that should have solved the problem,

thanks ill do that,

 

before it ran rich, and had an intermittent fault, idle dropped every now and then and ocationally hesitated, but after finding the temp sender was fubar'ed that should have solved the problem,

 

Could be a sign of the PTU giving up, S2 ptu is a good preventative upgrade.

im sooo happy, shes running perfect, it turned out the connection on the no. 6 injector was green, so cleaned it up, turned the key and had a smile across my face, no misfiring no more lumpy idle, no hesitation, no more fuel smell, perfect...

 

its the first time i've heard a zed run well, and i love it, was really thinking of throwing in the towel earlier when another zed was messing me about but, now i cant stop grinning...:tt1:

 

thanks for the help everyone.

 

im off to blow a load of fuel now... :biggrin: ( just taking it round the block lol :blushing:)

im sooo happy, shes running perfect, it turned out the connection on the no. 6 injector was green, so cleaned it up, turned the key and had a smile across my face, no misfiring no more lumpy idle, no hesitation, no more fuel smell, perfect...

 

its the first time i've heard a zed run well, and i love it, was really thinking of throwing in the towel earlier when another zed was messing me about but, now i cant stop grinning...:tt1:

 

thanks for the help everyone.

 

im off to blow a load of fuel now... :biggrin: ( just taking it round the block lol :blushing:)

 

Glad you got it running right matey, now i need to get my number 6 cylinder firing lol