Johnnycool

Hi
car was running fine driving it every day
left it for two days then went to start it
started on the button as usual revs to to 2 k then goes down to very rough idle dropping down to few 100 rpm. Barely stays running then dies after about a min
pressing throttle no response ! Just kills it quicker
if blip it something's can get it to rev a bit but just dies
starts every time but does same thing

got plenty of fuel and spark checked 1.5l after 30secs

any ideas ? Thinking maf ? Gonna unplug it and see if anything changes next

cheers for any insights !

johnny

Mrmerlin

simple things, what was the last thing that got fixed? did the car get wet?
remove coil wires and inspect for corrosion on the ends,
make sure the coil wires are not touching any part of the run.
Pull vacuum line off of front damper smell for fuel if fuel then investigate other 2, damper and FPR
check battery teminals and ground point for corrosion.

Observe the relay with the clear cover on the computer mount, is a red or green LED illuminated?

Kevin in Atlanta

Unplug the computers and re-seat them. There could be some corrosion built up. If you have access to DeOxit this would be a good time to apply it to the connector.

Johnnycool

Hi
Will get another look at car today but all new ignition wires last year due to issue with coil lead
Car not wet
No leds lit I even bypassed module just to be sure !
More later
Cheers

Johnnycool

Oh yeah and both computers tested by John speake last year

Johnnycool

Disconnected maf and it runs slightly worse won't idle at all
Vac lines all look ok
No real smell of petrol from them unless I suck them !
?

Mrmerlin

when was the intake refresh done?
how many miles?
temp 2 sensor tested? did you put on a new temp2 connector

Johnnycool

No I take refresh
Car had just turned 70k miles
Was running perfectly until this
I haven't replaced temp 2 but even if it had failed I wud expect it to at least run ??
Cheers

Mrmerlin

it might be time for the intake refresh please post a picture of the engine

Kevin in Atlanta

So, have you re-seated the computer connectors? Sitting in damp weather might be cause of corrosion.

Johnnycool

yep no damp at all or corrosion on computers - reseated as well :-(

Johnnycool

Johnnycool

pic of engine - dunno if any use but its genral appearance is very good condition

andymlow

Vacuum leak. I was doing some testing with a Mityvac and ripped my old dried out 4 way and the car started stalling at stop lights and running weak. Pull the line off the check valve and put a Mityvac on it and see if it will hold a vacuum.

daveo90s4

Research 'ignition monitoring system' - and don't let it run in that condition. Can provide more info re ignition monitoring system if required.

DaveO