Cutting Out Pls Help

[shaf ali]

i have a 1993 celica gt4 carlos sainez which is a limited addition.

the car runs fine on idle you can leave it running hours on end but when i attempt to drive it or even try to rev the whilst at stand still the engine starts to cut out :censor: i have replaced the knock sensor but still no joy so if anyone can help pls do thanks

[daktari]

i have a 1993 celica gt4 carlos sainez which is a limited addition.

the car runs fine on idle you can leave it running hours on end but when i attempt to drive it or even try to rev the whilst at stand still the engine starts to cut out :censor: i have replaced the knock sensor but still no joy so if anyone can help pls do thanks

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Welcome to TOC matey. First things first. Have you tried checking for error codes? See below.

First thing is to check out any diagnostic codes if you haven't tried already. With ignition off bridge terminals T and E1 in the diagnotic connector (LHS rear of engine bay) using a paper clip or similar. Turn on the ignition and count any flashes of the engine symbol on the dash. If the ECU detects a fault it will flash a fault code (2 lots of flashes for the 2 digit code). There are places on the internet that list the fault code descriptions (or post it back on here for someone to lookup).

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[GT4 BOOSTER]

maybe not so easy if its been modded and fiddled with.

[shaf ali]

i tried doin the fauklt code test and it came up eith knock sensor i replaced this but still the same.someone mentioned that it could be the butterfly valves?

[daktari]

i tried doin the fauklt code test and it came up eith knock sensor i replaced this but still the same.someone mentioned that it could be the butterfly valves?

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Thats possible though unlikely as they don`t come into operation until the revs are up around 4-5K. But i think you ought to be looking at simpler possibilities first. Check all the vacuum lines. Check to make sure they aren`t cracked or age hardened and that they are routed to the correct positions.Especially around the back of the engine, they may have been misrouted. Also check electrical connections to all the sensors. Hopefully it`ll be something easily rectified.

As GT4 BOOSTER points out, if the cars been modded then its possible something may have been connected wrongly. Was it like it when you bought it or has it started doing it after you`ve done something? Some kind of history would be useful.

[shaf ali]

i tried doin the fauklt code test and it came up eith knock sensor i replaced this but still the same.someone mentioned that it could be the butterfly valves?

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Thats possible though unlikely as they don`t come into operation until the revs are up around 4-5K. But i think you ought to be looking at simpler possibilities first. Check all the vacuum lines. Check to make sure they aren`t cracked or age hardened and that they are routed to the correct positions.Especially around the back of the engine, they may have been misrouted. Also check electrical connections to all the sensors. Hopefully it`ll be something easily rectified.

As GT4 BOOSTER points out, if the cars been modded then its possible something may have been connected wrongly. Was it like it when you bought it or has it started doing it after you`ve done something? Some kind of history would be useful.

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I bought the car from a friend with engine blown. so i fitted a low mileage engine with 28000 miles but still wouldnt start. so after getting it checked i had to replace the ecu, air flow sensor and then the car fired up but with the reving problem :censor:

after doing the fault test it came up with knock sensor so i replaced that and still no luck. the car is totally stndard. any ideas mate.

[shaf ali]

i tried doin the fauklt code test and it came up eith knock sensor i replaced this but still the same.someone mentioned that it could be the butterfly valves?

←

Thats possible though unlikely as they don`t come into operation until the revs are up around 4-5K. But i think you ought to be looking at simpler possibilities first. Check all the vacuum lines. Check to make sure they aren`t cracked or age hardened and that they are routed to the correct positions.Especially around the back of the engine, they may have been misrouted. Also check electrical connections to all the sensors. Hopefully it`ll be something easily rectified.

As GT4 BOOSTER points out, if the cars been modded then its possible something may have been connected wrongly. Was it like it when you bought it or has it started doing it after you`ve done something? Some kind of history would be useful.

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I bought the car from a friend with engine blown. so i fitted a low mileage engine with 28000 miles but still wouldnt start. so after getting it checked i had to replace the ecu, air flow sensor and then the car fired up but with the reving problem :censor:

after doing the fault test it came up with knock sensor so i replaced that and still no luck. the car is totally stndard. any ideas mate.

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just done a fault test and its coming up with code 41 tps sensor?

[mikeb]

just done a fault test and its coming up with code 41 tps sensor?

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I think I suggested that in your other thread that you started on the subject? It might just need setting up, or it could be a wiring fault judging by all the work you have done on it recently. It is quite easy to test the TPS.