Hesitation even after new engine!!!
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Hesitation even after new engine!!!
Hi AllMy friends Scooby (96 classic) seems to hesitate at about 4K revs? not all the time? but just suddenly starts jumping when driving along? on and off? we chnage the engine hoping to cure it? but still doing it? any ideas? we changed coil packs, plugs & leads etc?
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Check all boost pipework and maybe give the boost solenoid a good clean. Look at the things that havent been changed. Also if possible, swap the ecu to see if that solves the problem (swap like for like wrx - wrx, not sti - wrx etc)
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not sure on the ecu to be honest if that would work (if it has the same amount of connectors to the loom it will work) but I dont know the spec of the ra engine if it has different internals to the 96 wrx (cam profiles etc) so may not be a totally accurate way.
Check the boost pipework though and clean the solenoid (connect the connectors under the steering columm so that you can hear the solenoid clicking away)
Check the boost pipework though and clean the solenoid (connect the connectors under the steering columm so that you can hear the solenoid clicking away)
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Cheers Si (JGM) im gonna see if the speedo is the thing thats kicking in the hesitation. before the car speedo was working but since the new engine. it did stop working so i'll have to see if finding the speedo cable and reconnecting that will get the thing working right??? any1 know where the speedo cable is located gearbox side?
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Cheers Si (JGM) im gonna see if the speedo is the thing thats kicking in the hesitation. before the car speedo was working but since the new engine. it did stop working so i'll have to see if finding the speedo cable and reconnecting that will get the thing working right??? any1 know where the speedo cable is located gearbox side?
Simon
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at least you are still smiling
I'd imagine its going to be on the left of the 'box- same side as the turbo...but if I'm worng I'm sure someone will be along to correct me
I'd imagine its going to be on the left of the 'box- same side as the turbo...but if I'm worng I'm sure someone will be along to correct me
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my car still worked fine when my speedo was disconnected, alright the rev counter went nuts and CEL light would flash on and off but drving wise it was fine. I have sti import 1997 dunno if this would make a diffrance
matt
matt
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Cheers Si. I'll have a look on the weekend, hopefully get that sorted. its weird cause it done the hesitation before the engine change when the speedo did work. but after the engine change the speedo obviously wasnt connected correctly. where does the ECU take the speed input reading from? could this be damaged?
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speedo drive in gearbox via cable to dash.. then electronic pulse from the speedo to the ecu..
if uk it is the same only electronically from gearbox to speedo and then to ecu etc..
Simon
if uk it is the same only electronically from gearbox to speedo and then to ecu etc..
Simon
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Thanks Si, i think i'll check his speedo cable first @ the gearbox then pull the dial cluster out and inspect the cable and wiring from that end. hopefully i can cure the problem. does the speed sensor wire come straight from the back of the speedo? or is it a certain colour whereabouts etc?? (1996 wrx import) cheers
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I had kangarooing issues (off-boost) - replaced TPS, ICV and added an earthing kit all with no luck. Eventually traced it to water in the main engine loom connectors. They're right under the drain from the blanked off bonnet vents. One drip cover later and no issues since.
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I had kangarooing issues (off-boost) - replaced TPS, ICV and added an earthing kit all with no luck. Eventually traced it to water in the main engine loom connectors. They're right under the drain from the blanked off bonnet vents. One drip cover later and no issues since.
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