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Car Forum / Mercedes-Benz Cars / April 2006'91 190E 1800cc Throttle Body problem???!!
Hi all.... I'm hoping someone may be able to shed some light on a recent problem I've encountered with my 190E.... it is a 1991 model UK car...1800cc engine (injected). Whilst driving this afternoon, I noticed a substantial change in throttle response.... it feels as though there is no tension in the throttle cable and the motor revs very highly and freely once over about 2500 RPM.... it's now difficult to hold at a particular speed - as soon as 2500ish RPM is on the clock, it just takes off until I come off the throttle completely. I have removed the airbox and checked the throttle cable assembly, and as far as I can see, it all looks ok, but there does seem to be a lot less resistance when manually opening the throttle (by hand) Spring is intact and in good order as far as I can tell, and there is no obvious damage.... Just wondering if anyone can offer some pointers / head me in the right direction.... Many thanks in advance, Dave Hi Dave are you checking the small spring on the side of manifold on the accelerator lever near the cable .If so this is not the correct spring the actual throttle spring is located under the manifold fitted to support bracket to throttle body linkage. Ah....I was checking the spring on the side....is it gonna be a manifold off job then? thanks for the reply, Dave > Hi Dave are you checking the small spring on the side of manifold on > the accelerator lever near the cable .If so this is not the correct > spring the actual throttle spring is located under the manifold fitted > to support bracket to throttle body linkage. Now fixed...the spring was broken! Thanks so much.... Dave > Hi Dave are you checking the small spring on the side of manifold on > the accelerator lever near the cable .If so this is not the correct > spring the actual throttle spring is located under the manifold fitted > to support bracket to throttle body linkage. Allright, I give up! My accelerator is also temperamental.... on/off syndrom, difficult to get smooth accel or holding speed. I do see the longish spring on the side of the air mass sensor (intake manifold) but canot localized the 'actual' spring for the accelerator pedal. I removed the airfilter housing and did notice the at the rear and kind of underneath the air mass sensor there was a lever that moved in response to throttle and had nothing connected to it but there are a roundish 'nipple' that appears to hold the 'cup' end of another lever, or possibly a spring.... I don't know.... am I at the right place.... can't see a spring anywhere. cheers, guenter please help >Now fixed...the spring was broken! >Thanks so much.... [quoted text clipped - 4 lines] >> spring the actual throttle spring is located under the manifold fitted >> to support bracket to throttle body linkage. Guenter, I too had some difficulty locating the spring... it is not easy to get to! It is underneath the throttle body / air mass sensor. If you have the air filter housing off, you can see the spring if you shine a torch under the right side of the throttle body - near the linkage that has the "nipple" on it.... it is accessible from the front, if you have very bendy and skinny arms! I admit, I gave up in the end and let a friend who owed me a favor do the job for me! Good luck... Dave > Allright, I give up! My accelerator is also temperamental.... on/off > syndrom, difficult to get smooth accel or holding speed. I do see the [quoted text clipped - 21 lines] >>> spring the actual throttle spring is located under the manifold fitted >>> to support bracket to throttle body linkage. |
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